[MERGE] merged trunk.

bzr revid: vmt@openerp.com-20121128151352-n9r87jn5tff949ka
This commit is contained in:
Vo Minh Thu 2012-11-28 16:13:52 +01:00
commit fc2f4ab8a4
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README
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@ -6,17 +6,9 @@ Customer Relationship Management software. More info at:
http://www.openerp.com
Installation on Debian Ubuntu
Installation on Debian/Ubuntu
-----------------------------
Download the deb file and type:
$ sudo dpkg -i <openerp-deb-filename>
$ sudo apt-get install install -f
Installation on Debian Ubuntu from nightly build
------------------------------------------------
Add the the apt repository
deb http://nightly.openerp.com/6.1/deb/ ./
@ -26,6 +18,11 @@ in your source.list and type:
$ sudo apt-get update
$ sudo apt-get install openerp
Or download the deb file and type:
$ sudo dpkg -i <openerp-deb-filename>
$ sudo apt-get install install -f
Installation on RedHat, Fedora, CentOS
--------------------------------------
@ -42,6 +39,8 @@ Install the openerp rpm
Installation on Windows
-----------------------
Check the notes in setup.py
Installation on MacOSX
-----------------------
@ -54,14 +53,7 @@ default master password is "admin".
Detailed System Requirements
----------------------------
You need the following software installed:
postgresql-client, python-dateutil, python-feedparser, python-gdata,
python-ldap, python-libxslt1, python-lxml, python-mako, python-openid,
python-psycopg2, python-pybabel, python-pychart, python-pydot,
python-pyparsing, python-reportlab, python-simplejson, python-tz,
python-vatnumber, python-vobject, python-webdav, python-werkzeug, python-xlwt,
python-yaml, python-zsi
The dependencies are listed in setup.py
For Luxembourg localization, you also need:

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========================================
Getting started with OpenERP development
========================================
.. toctree::
:maxdepth: 1
Installation from sources
==========================
.. _getting_started_installation_source-link:
Source code is hosted on Launchpad_. In order to get the sources, you
will need Bazaar_ to pull the source from Launchpad. Bazaar is a
version control system that helps you track project history over time
and collaborate efficiently. You may have to create an account on
Launchpad to be able to collaborate on OpenERP development. Please
refer to the Launchpad and Bazaar documentation to install and setup
your development environment.
The running example of this section is based on an Ubuntu
environment. You may have to adapt the steps according to your
system. Once your working environment is ready, prepare a working
directory that will contain the sources. For a ``source`` base
directory, type::
mkdir source;cd source
OpenERP provides a setup script that automatizes the tasks of creating
a shared repository and getting the source code. Get the setup script
of OpenERP by typing::
bzr cat -d lp:~openerp-dev/openerp-tools/trunk setup.sh | sh
This will create the following two files in your ``source`` directory::
-rw-rw-r-- 1 openerp openerp 5465 2012-04-17 11:05 Makefile
-rw-rw-r-- 1 openerp openerp 2902 2012-04-17 11:05 Makefile_helper.py
If you want some help about the available options, please type::
make help
Next step is to initialize the shared repository and download the
sources. Get the current trunk version of OpenERP by typing::
make init-trunk
This will create the following structure inside your ``source``
directory, and fetch the latest source code from ``trunk``::
drwxrwxr-x 3 openerp openerp 4096 2012-04-17 11:10 addons
drwxrwxr-x 3 openerp openerp 4096 2012-04-17 11:10 misc
drwxrwxr-x 3 openerp openerp 4096 2012-04-17 11:10 server
drwxrwxr-x 3 openerp openerp 4096 2012-04-17 11:10 web
Some dependencies are necessary to use OpenERP. Depending on your
environment, you might have to install the following packages::
sudo apt-get install graphviz ghostscript postgresql-client \
python-dateutil python-feedparser python-gdata \
python-ldap python-libxslt1 python-lxml python-mako \
python-openid python-psycopg2 python-pybabel python-pychart \
python-pydot python-pyparsing python-reportlab python-simplejson \
python-tz python-vatnumber python-vobject python-webdav \
python-werkzeug python-xlwt python-yaml python-imaging \
python-matplotlib
Next step is to initialize the database. This will create a new openerp role::
make db-setup
Finally, launch the OpenERP server::
make server
Testing your installation can be done on http://localhost:8069/. You
should see the OpenERP main login page.
.. _Launchpad: https://launchpad.net/
.. _Bazaar: http://bazaar.canonical.com/en/
Command line options
====================
.. program:: openerp-server
Using the command ::
./openerp-server --help
General Options
+++++++++++++++
::
--version show program version number and exit
-h, --help show this help message and exit
-c CONFIG, --config=CONFIG specify alternate config file
-s, --save save configuration to ~/.terp_serverrc
-v, --verbose enable debugging
--pidfile=PIDFILE file where the server pid will be stored
--logfile=LOGFILE file where the server log will be stored
-n INTERFACE, --interface=INTERFACE specify the TCP IP address
-p PORT, --port=PORT specify the TCP port
--net_interface=NETINTERFACE specify the TCP IP address for netrpc
--net_port=NETPORT specify the TCP port for netrpc
--no-netrpc disable netrpc
--no-xmlrpc disable xmlrpc
-i INIT, --init=INIT init a module (use "all" for all modules)
--without-demo=WITHOUT_DEMO load demo data for a module (use "all" for all modules)
-u UPDATE, --update=UPDATE update a module (use "all" for all modules)
--stop-after-init stop the server after it initializes
--debug enable debug mode
-S, --secure launch server over https instead of http
--smtp=SMTP_SERVER specify the SMTP server for sending mail
Database related options
++++++++++++++++++++++++
::
-d DB_NAME, --database=DB_NAME
specify the database name
-r DB_USER, --db_user=DB_USER
specify the database user name
-w DB_PASSWORD, --db_password=DB_PASSWORD
specify the database password
--pg_path=PG_PATH specify the pg executable path
--db_host=DB_HOST specify the database host
--db_port=DB_PORT specify the database port
Internationalization options
++++++++++++++++++++++++++++
Use these options to translate OpenERP to another language.See i18n
section of the user manual. Option '-l' is mandatory.::
-l LANGUAGE, --language=LANGUAGE
specify the language of the translation file. Use it
with --i18n-export and --i18n-import
--i18n-export=TRANSLATE_OUT
export all sentences to be translated to a CSV file
and exit
--i18n-import=TRANSLATE_IN
import a CSV file with translations and exit
--modules=TRANSLATE_MODULES
specify modules to export. Use in combination with
--i18n-export
Options from previous versions
++++++++++++++++++++++++++++++
Some options were removed in OpenERP version 6. For example,
``price_accuracy`` is now configured through the
:ref:`decimal_accuracy` screen.
Configuration
==============
.. _getting_started_configuration-link:
Two configuration files are available:
* one for the client: ``~/.openerprc``
* one for the server: ``~/.openerp_serverrc``
If they are not found, the server and the client will start with a
default configuration. Those files follow the convention used by
python's ConfigParser module. Please note that lines beginning with
"#" or ";" are comments. The client configuration file is
automatically generated upon the first start. The sezrver
configuration file can automatically be created using the command ::
./openerp-server -s or ./openerp-server --save
You can specify alternate configuration files with ::
-c CONFIG, --config=CONFIG specify alternate config file
Configure addons locations
++++++++++++++++++++++++++
By default, the only directory of addons known by the server is
server/bin/addons. It is possible to add new addons by
- copying them in server/bin/addons, or creating a symbolic link to
each of them in this directory, or
- specifying another directory containing addons to the server. The
later can be accomplished either by running the server with the
``--addons-path=`` option, or by configuring this option in the
openerp_serverrc file, automatically generated under Linux in your
home directory by the server when executed with the ``--save``
option. You can provide several addons to the ``addons_path`` =
option, separating them using commas.
Start-up script
===============
.. versionadded:: 6.1
To run the OpenERP server, the conventional approach is to use the
`openerp-server` script. It loads the :ref:`openerp library`, sets a
few configuration variables corresponding to command-line arguments,
and starts to listen to incoming connections from clients.
Depending on your deployment needs, you can write such a start-up script very
easily. We also recommend you take a look at an alternative tool called
`openerp-command` that can, among other things, launch the server.
Yet another alternative is to use a WSGI-compatible HTTP server and let it call
into one of the WSGI entry points of the server.

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========================================
Architecture
========================================
OpenERP as a multitenant three-tiers architecture
=================================================
This section presents the OpenERP architecture along with technology details
of the application. The tiers composing OpenERP are presented. Communication
means and protocols between the application components are also presented.
Some details about used development languages and technology stack are then summarized.
OpenERP is a `multitenant <http://en.wikipedia.org/wiki/Multitenancy>`_, `three-tiers architecture
<http://en.wikipedia.org/wiki/Multitier_architecture#Three-tier_architecture>`_:
database tier for data storage, application tier for processing and functionalities
and presentation tier providing user interface. Those are separate layers
inside OpenERP. The application tier itself is written as a core; multiple
additional modules can be installed in order to create a particular instance
of OpenERP adapted to specific needs and requirements. Moreover, OpenERP
follows the Model-View-Controller (MVC) architectural pattern.
A typical deployment of OpenERP is shown on `Figure 1`_. This deployment is
called Web embedded deployment. As shown, an OpenERP system consists of
three main components:
- a PostgreSQL database server which contains all OpenERP databases.
Databases contain all application data, and also most of the OpenERP
system configuration elements. Note that this server can possibly be
deployed using clustered databases.
- the OpenERP Server, which contains all the enterprise logic and ensures
that OpenERP runs optimally. One layer of the server is dedicated to
communicate and interface with the PostgreSQL database, the ORM engine.
Another layer allows communications between the server and a web browser,
the Web layer. Having more than one server is possible, for example in
conjunction with a load balancing mechanism.
- the client running in the a web browser as javascript application.
The database server and the OpenERP server can be installed on the same
computer, or distributed onto separate computer servers, for example for
performance considerations.
.. _`Figure 1`:
.. figure:: _static/02_openerp_architecture.png
:width: 50%
:alt: OpenERP 6.1 architecture for embedded web deployment
:align: center
OpenERP 6.1 architecture for embedded web deployment
The next subsections give details about the different tiers of the OpenERP
architecture.
PostgreSQL database
+++++++++++++++++++
The data tier of OpenERP is provided by a PostgreSQL relational database.
While direct SQL queries can be executed from OpenERP modules, most accesses
to the relational database are done through the server Object Relational
Mapping layer.
Databases contain all application data, and also most of the OpenERP system
configuration elements. Note that this server can possibly be deployed using
clustered databases.
OpenERP server
++++++++++++++
OpenERP provides an application server on which specific business applications
can be built. It is also a complete development framework, offering a range
of features to write those applications. Among those features, the OpenERP
ORM provides functionalities and an interface on top of the PostgreSQL server.
The OpenERP server also features a specific layer designed to communicate
with the web browser-based client. This layer connects users using standard
browsers to the server.
From a developer perspective, the server acts both as a library which brings
the above benefits while hiding the low-level details, and as a simple way
to install, configure and run the written applications. The server also contains
other services, such as extensible data models and view, workflow engine or
reports engine. However, those are OpenERP services not specifically related
to security, and are therefore not discussed in details in this document.
**Server - ORM**
The Object Relational Mapping ORM layer is one of the salient features of
the OpenERP Server. It provides additional and essential functionalities
on top of PostgreSQL server. Data models are described in Python and OpenERP
creates the underlying database tables using this ORM. All the benefits of
RDBMS such as unique constraints, relational integrity or efficient querying
are used and completed by Python flexibility. For instance, arbitrary constraints
written in Python can be added to any model. Different modular extensibility
mechanisms are also afforded by OpenERP.
It is important to understand the ORM responsibility before attempting to
by-pass it and to access directly the underlying database via raw SQL queries.
When using the ORM, OpenERP can make sure the data remains free of any corruption.
For instance, a module can react to data creation in a particular table.
This behavior can occur only if queries go through the ORM.
The services granted by the ORM are among other :
- consistency validation by powerful validity checks,
- providing an interface on objects (methods, references, ...) allowing
to design and implement efficient modules,
- row-level security per user and group; more details about users and user
groups are given in the section Users and User Roles,
- complex actions on a group of resources,
- inheritance service allowing fine modeling of new resources
**Server - Web**
The web layer offers an interface to communicate with standard browsers.
In the 6.1 version of OpenERP, the web-client has been rewritten and integrated
into the OpenERP server tier. This web layer is a WSGI-compatible application
based on werkzeug. It handles regular http queries to server static file or
dynamic content and JSON-RPC queries for the RPC made from the browser.
**Modules**
By itself, the OpenERP server is a core. For any enterprise, the value of
OpenERP lies in its different modules. The role of the modules is to implement
any business requirement. The server is the only necessary component to
add modules. Any official OpenERP release includes a lot of modules, and
hundreds of modules are available thanks to the community. Examples of
such modules are Account, CRM, HR, Marketing, MRP, Sale, etc.
Clients
+++++++
As the application logic is mainly contained server-side, the client is
conceptually simple. It issues a request to the server, gets data back
and display the result (e.g. a list of customers) in different ways
(as forms, lists, calendars, ...). Upon user actions, it sends queries
to modify data to the server.
The default client of OpenERP is an JavaScript application running in the
browser that communicates with the server using JSON-RPC.
MVC architecture in OpenERP
===========================
According to `Wikipedia <http://en.wikipedia.org/wiki/Model-view-controller>`_,
"a Model-view-controller (MVC) is an architectural pattern used in software
engineering". In complex computer applications presenting lots of data to
the user, one often wishes to separate data (model) and user interface (view)
concerns. Changes to the user interface does therefore not impact data
management, and data can be reorganized without changing the user interface.
The model-view-controller solves this problem by decoupling data access
and business logic from data presentation and user interaction, by
introducing an intermediate component: the controller.
.. _`Figure 3`:
.. figure:: _static/02_mvc_diagram.png
:width: 35%
:alt: Model-View-Controller diagram
:align: center
Model-View-Controller diagram
For example in the diagram above, the solid lines for the arrows starting
from the controller and going to both the view and the model mean that the
controller has a complete access to both the view and the model. The dashed
line for the arrow going from the view to the controller means that the view
has a limited access to the controller. The reasons of this design are :
- From **View** to **Model** : the model sends notification to the view
when its data has been modified in order the view to redraw its content.
The model doesn't need to know the inner workings of the view to perform
this operation. However, the view needs to access the internal parts of the model.
- From **View** to **Controller** : the reason why the view has limited
access to the controller is because the dependencies from the view to
the controller need to be minimal: the controller can be replaced at
any moment.
OpenERP follows the MVC semantic with
- model : The PostgreSQL tables.
- view : views are defined in XML files in OpenERP.
- controller : The objects of OpenERP.
Network communications and WSGI
===============================
OpenERP is an HTTP web server and may also be deployed as an WSGI-compliant
application.
Clients may communicate with OpenERP using sessionless XML-RPC, the recommended
way to interoperate with OpenERP. Web-based clients communicates using the
session aware JSON-RPC.
Everything in OpenERP, and objects methods in particular, are exposed via
the network and a security layer. Access to the data model is in fact a service
and it is possible to expose new services. For instance, a WebDAV service and
a FTP service are available.
Services can make use of the `WSGI
<http://en.wikipedia.org/wiki/Web_Server_Gateway_Interface>`_ stack. WSGI is a
standard solution in the Python ecosystem to write HTTP servers, applications,
and middleware which can be used in a mix-and-match fashion. By using WSGI, it
is possible to run OpenERP in any WSGI compliant server. It is also possible to
use OpenERP to host a WSGI application.
A striking example of this possibility is the OpenERP Web layer that is
the server-side counter part to the web clients. It provides the requested
data to the browser and manages web sessions. It is a WSGI-compliant application.
As such, it can be run as a stand-alone HTTP server or embedded inside OpenERP.
The HTTP namespaces /openerp/ /object/ /common/ are reserved for the XML-RPC
layer, every module restrict it's HTTP namespace to /<name_of_the_module>/

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.. _module-dev:
=======
Modules
=======
.. toctree::
:maxdepth: 2
03_module_dev_01
03_module_dev_02
03_module_dev_03
03_module_dev_04
03_module_dev_05
03_module_dev_06

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.. _module-dev-structure:
Module structure
================
A module can contain the following elements:
- **Business object** : declared as Python classes extending the class
osv.Model, the persistence of these resource is completly managed by
OpenERP's ORM.
- **Data** : XML/CSV files with meta-data (views and workflows declaration),
configuration data (modules parametrization) and demo data (optional but
recommended for testing),
- **Reports** : RML (XML format). HTML/MAKO or OpenOffice report templates, to
be merged with any kind of business data, and generate HTML, ODT or PDF
reports.
.. figure:: _static/03_module_gen_view.png
:width: 75%
:alt: Module composition
:align: center
Module composition
Each module is contained in its own directory within either the server/bin/addons
directory or another directory of addons, configured in server installation.
To create a new module for example the 'OpenAcademy' module, the following
steps are required:
- create a ``openacademy`` subdirectory in the source/addons directory
- create the module import file ``__init__.py``
- create the module manifield file ``__openerp__.py``
- create **Python** files containing **objects**
- create **.xml files** holding module data such as views, menu entries
or demo data
- optionally create **reports** or **workflows**
Python import file __init__.py
++++++++++++++++++++++++++++++
The ``__init__.py`` file is the Python import file, because an OpenERP module
is also a regular Python module. The file should import all the other python
file or submodules.
For example, if a module contains a single python file named ``openacademy.py``,
the file should look like:
import openacademy
Manifest file __openerp__.py
+++++++++++++++++++++++++++++++
In the created module directory, you must add a **__openerp__.py** file.
This file, which must be a Python dict literal, is responsible to
1. determine the *XML files that will be parsed* during the initialization
of the server, and also to
2. determine the *dependencies* of the created module.
3. declare additional meta data
This file must contain a Python dictionary with the following values:
::
name The name of the module in English.
version The version of the module.
summary Short description or keywords
description The module description (text).
category The categrory of the module
author The author of the module.
website URL of the website of the module.
license The license of the module (default: AGPL-3).
depends List of modules on which this module depends beside base.
data List of .xml files to load when the module is installed or updated.
demo List of additional .xml files to load when the module is
installed or updated and demo flag is active.
installable True or False. Determines whether the module is installable
or not.
auto_install True or False (default: False). If set to ``True``, the
module is a link module. It will be installed as soon
as all its dependencies are installed.
For the ``openacademy`` module, here is an example of ``__openerp__.py``
declaration file:
.. code-block:: python
{
'name' : "OpenAcademy",
'version' : "1.0",
'author' : "OpenERP SA",
'category' : "Tools",
'depends' : ['mail'],
'data' : [
'openacademy_view.xml',
'openacademy_data.xml',
'report/module_report.xml',
'wizard/module_wizard.xml',
],
'demo' : [
'openacademy_demo.xml'
],
'installable': True,
}
Objects
+++++++
All OpenERP resources are objects: invoices, partners. Metadata are also object
too: menus, actions, reports... Object names are hierarchical, as in the
following examples:
* account.transfer : a money transfer
* account.invoice : an invoice
* account.invoice.line : an invoice line
Generally, the first word is the name of the module: account, stock, sale.
Those object are declared in python be subclassing osv.Model
The ORM of OpenERP is constructed over PostgreSQL. It is thus possible to
query the object used by OpenERP using the object interface (ORM) or by
directly using SQL statements.
But it is dangerous to write or read directly in the PostgreSQL database, as
you will shortcut important steps like constraints checking or workflow
modification.
.. .. figure:: images/pom_3_0_3.png
.. :scale: 50
.. :align: center
.. *The Physical Objects Model of [OpenERP version 3.0.3]*
XML Files
+++++++++
XML files located in the module directory are used to initialize or update the
the database when the module is installed or updated. They are used for many
purposes, among which we can cite :
* initialization and demonstration data declaration,
* views declaration,
* reports declaration,
* workflows declaration.
General structure of OpenERP XML files is more detailed in the
:ref:`xml-serialization` section. Look here if you are interested in learning
more about *initialization* and *demonstration data declaration* XML files. The
following section are only related to XML specific to *actions, menu entries,
reports, wizards* and *workflows* declaration.
Data can be inserted or updated into the PostgreSQL tables corresponding to the
OpenERP objects using XML files. The general structure of an OpenERP XML file
is as follows:
.. code-block:: xml
<?xml version="1.0"?>
<openerp>
<data>
<record model="model.name_1" id="id_name_1">
<field name="field1"> "field1 content" </field>
<field name="field2"> "field2 content" </field>
(...)
</record>
<record model="model.name_2" id="id_name_2">
(...)
</record>
(...)
</data>
</openerp>
Record Tag
//////////
**Description**
The addition of new data is made with the record tag. This one takes a
mandatory attribute : model. Model is the object name where the insertion has
to be done. The tag record can also take an optional attribute: id. If this
attribute is given, a variable of this name can be used later on, in the same
file, to make reference to the newly created resource ID.
A record tag may contain field tags. They indicate the record's fields value.
If a field is not specified the default value will be used.
The Record Field tag
////////////////////
The attributes for the field tag are the following:
name : mandatory
the field name
eval : optional
python expression that indicating the value to add
ref
reference to an id defined in this file
model
model to be looked up in the search
search
a query
**Example**
.. code-block:: xml
<record model="ir.actions.report.xml" id="l0">
<field name="model">account.invoice</field>
<field name="name">Invoices List</field>
<field name="report_name">account.invoice.list</field>
<field name="report_xsl">account/report/invoice.xsl</field>
<field name="report_xml">account/report/invoice.xml</field>
</record>
Let's review an example taken from the OpenERP source (base_demo.xml in the base module):
.. code-block:: xml
<record model="res.company" id="main_company">
<field name="name">Tiny sprl</field>
<field name="partner_id" ref="main_partner"/>
<field name="currency_id" ref="EUR"/>
</record>
.. code-block:: xml
<record model="res.users" id="user_admin">
<field name="login">admin</field>
<field name="password">admin</field>
<field name="name">Administrator</field>
<field name="signature">Administrator</field>
<field name="action_id" ref="action_menu_admin"/>
<field name="menu_id" ref="action_menu_admin"/>
<field name="address_id" ref="main_address"/>
<field name="groups_id" eval="[(6,0,[group_admin])]"/>
<field name="company_id" ref="main_company"/>
</record>
This last record defines the admin user :
* The fields login, password, etc are straightforward.
* The ref attribute allows to fill relations between the records :
.. code-block:: xml
<field name="company_id" ref="main_company"/>
The field **company_id** is a many-to-one relation from the user object to the company object, and **main_company** is the id of to associate.
* The **eval** attribute allows to put some python code in the xml: here the groups_id field is a many2many. For such a field, "[(6,0,[group_admin])]" means : Remove all the groups associated with the current user and use the list [group_admin] as the new associated groups (and group_admin is the id of another record).
* The **search** attribute allows to find the record to associate when you do not know its xml id. You can thus specify a search criteria to find the wanted record. The criteria is a list of tuples of the same form than for the predefined search method. If there are several results, an arbitrary one will be chosen (the first one):
.. code-block:: xml
<field name="partner_id" search="[]" model="res.partner"/>
This is a classical example of the use of **search** in demo data: here we do not really care about which partner we want to use for the test, so we give an empty list. Notice the **model** attribute is currently mandatory.
Function tag
////////////
A function tag can contain other function tags.
model : mandatory
The model to be used
name : mandatory
the function given name
eval
should evaluate to the list of parameters of the method to be called, excluding cr and uid
**Example**
.. code-block:: xml
<function model="ir.ui.menu" name="search" eval="[[('name','=','Operations')]]"/>
Views
+++++
Views are a way to represent the objects on the client side. They indicate to the client how to lay out the data coming from the objects on the screen.
There are two types of views:
* form views
* tree views
Lists are simply a particular case of tree views.
A same object may have several views: the first defined view of a kind (*tree, form*, ...) will be used as the default view for this kind. That way you can have a default tree view (that will act as the view of a one2many) and a specialized view with more or less information that will appear when one double-clicks on a menu item. For example, the products have several views according to the product variants.
Views are described in XML.
If no view has been defined for an object, the object is able to generate a view to represent itself. This can limit the developer's work but results in less ergonomic views.
Usage example
/////////////
When you open an invoice, here is the chain of operations followed by the client:
* An action asks to open the invoice (it gives the object's data (account.invoice), the view, the domain (e.g. only unpaid invoices) ).
* The client asks (with XML-RPC) to the server what views are defined for the invoice object and what are the data it must show.
* The client displays the form according to the view
.. .. figure:: images/arch_view_use.png
.. :scale: 50
.. :align: center
To develop new objects
//////////////////////
The design of new objects is restricted to the minimum: create the objects and optionally create the views to represent them. The PostgreSQL tables do not have to be written by hand because the objects are able to automatically create them (or adapt them in case they already exist).
Reports
"""""""
OpenERP uses a flexible and powerful reporting system. Reports are generated either in PDF or in HTML. Reports are designed on the principle of separation between the data layer and the presentation layer.
Reports are described more in details in the `Reporting <http://openobject.com/wiki/index.php/Developers:Developper%27s_Book/Reports>`_ chapter.
Workflow
""""""""
The objects and the views allow you to define new forms very simply, lists/trees and interactions between them. But that is not enough, you must define the dynamics of these objects.
A few examples:
* a confirmed sale order must generate an invoice, according to certain conditions
* a paid invoice must, only under certain conditions, start the shipping order
The workflows describe these interactions with graphs. One or several workflows may be associated to the objects. Workflows are not mandatory; some objects don't have workflows.
Below is an example workflow used for sale orders. It must generate invoices and shipments according to certain conditions.
.. .. figure:: images/arch_workflow_sale.png
.. :scale: 85
.. :align: center
In this graph, the nodes represent the actions to be done:
* create an invoice,
* cancel the sale order,
* generate the shipping order, ...
The arrows are the conditions;
* waiting for the order validation,
* invoice paid,
* click on the cancel button, ...
The squared nodes represent other Workflows;
* the invoice
* the shipping
i18n
----
.. versionchanged:: 5.0
Each module has its own ``i18n`` folder. In addition, OpenERP can now deal with
``.po`` [#f_po]_ files as import/export format. The translation files of the
installed languages are automatically loaded when installing or updating a
module.
Translations are managed by the `Launchpad Web interface
<https://translations.launchpad.net/openobject>`_. Here, you'll find the list
of translatable projects.
Please read the `FAQ <https://answers.launchpad.net/rosetta/+faqs>`_ before asking questions.
.. [#f_po] http://www.gnu.org/software/autoconf/manual/gettext/PO-Files.html#PO-Files

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.. _module-dev-api:
Objects, Fields and Methods
===========================
OpenERP Objects
---------------
.. This chapter is dedicated to detailed objects definition:
all fields
all objects
inheritancies
All the ERP's pieces of data are accessible through "objects". As an example, there is a res.partner object to access the data concerning the partners, an account.invoice object for the data concerning the invoices, etc...
Please note that there is an object for every type of resource, and not an
object per resource. We have thus a res.partner object to manage all the
partners and not a *res.partner* object per partner. If we talk in "object
oriented" terms, we could also say that there is an object per level.
The direct consequences is that all the methods of objects have a common parameter: the "ids" parameter. This specifies on which resources (for example, on which partner) the method must be applied. Precisely, this parameter contains a list of resource ids on which the method must be applied.
For example, if we have two partners with the identifiers 1 and 5, and we want to call the res_partner method "send_email", we will write something like::
res_partner.send_email(... , [1, 5], ...)
We will see the exact syntax of object method calls further in this document.
In the following section, we will see how to define a new object. Then, we will check out the different methods of doing this.
For developers:
* OpenERP "objects" are usually called classes in object oriented programming.
* A OpenERP "resource" is usually called an object in OO programming, instance of a class.
It's a bit confusing when you try to program inside OpenERP, because the language used is Python, and Python is a fully object oriented language, and has objects and instances ...
Luckily, an OpenERP "resource" can be converted magically into a nice Python object using the "browse" class method (OpenERP object method).
The ORM - Object-relational mapping - Models
--------------------------------------------
The ORM, short for Object-Relational Mapping, is a central part of OpenERP.
In OpenERP, the data model is described and manipulated through Python classes
and objects. It is the ORM job to bridge the gap -- as transparently as
possible for the developer -- between Python and the underlying relational
database (PostgreSQL), which will provide the persistence we need for our
objects.
OpenERP Object Attributes
-------------------------
Objects Introduction
++++++++++++++++++++
To define a new object, you must define a new Python class then instantiate it. This class must inherit from the osv class in the osv module.
Object definition
+++++++++++++++++
The first line of the object definition will always be of the form::
class name_of_the_object(osv.osv):
_name = 'name.of.the.object'
_columns = { ... }
...
name_of_the_object()
An object is defined by declaring some fields with predefined names in the
class. Two of them are required (_name and _columns), the rest are optional.
The predefined fields are:
Predefined fields
+++++++++++++++++
`_auto`
Determines whether a corresponding PostgreSQL table must be generated
automatically from the object. Setting _auto to False can be useful in case
of OpenERP objects generated from PostgreSQL views. See the "Reporting From
PostgreSQL Views" section for more details.
`_columns (required)`
The object fields. See the :ref:`fields <fields-link>` section for further details.
`_constraints`
The constraints on the object. See the constraints section for details.
`_sql_constraints`
The SQL Constraint on the object. See the SQL constraints section for further details.
`_defaults`
The default values for some of the object's fields. See the default value section for details.
`_inherit`
The name of the osv object which the current object inherits from. See the :ref:`object inheritance section<inherit-link>`
(first form) for further details.
`_inherits`
The list of osv objects the object inherits from. This list must be given in
a python dictionary of the form: {'name_of_the_parent_object':
'name_of_the_field', ...}. See the :ref:`object inheritance section<inherits-link>`
(second form) for further details. Default value: {}.
`_log_access`
Determines whether or not the write access to the resource must be logged.
If true, four fields will be created in the SQL table: create_uid,
create_date, write_uid, write_date. Those fields represent respectively the
id of the user who created the record, the creation date of record, the id
of the user who last modified the record, and the date of that last
modification. This data may be obtained by using the perm_read method.
`_name (required)`
Name of the object. Default value: None.
`_order`
Name of the fields used to sort the results of the search and read methods.
Default value: 'id'.
Examples::
_order = "name"
_order = "date_order desc"
`_rec_name`
Name of the field in which the name of every resource is stored. Default
value: 'name'. Note: by default, the name_get method simply returns the
content of this field.
`_sequence`
Name of the SQL sequence that manages the ids for this object. Default value: None.
`_sql`
SQL code executed upon creation of the object (only if _auto is True). It means this code gets executed after the table is created.
`_table`
Name of the SQL table. Default value: the value of the _name field above
with the dots ( . ) replaced by underscores ( _ ).
.. _inherit-link:
Object Inheritance - _inherit
-----------------------------
Introduction
++++++++++++
Objects may be inherited in some custom or specific modules. It is better to
inherit an object to add/modify some fields.
It is done with::
_inherit='object.name'
Extension of an object
++++++++++++++++++++++
There are two possible ways to do this kind of inheritance. Both ways result in
a new class of data, which holds parent fields and behaviour as well as
additional fields and behaviour, but they differ in heavy programatical
consequences.
While Example 1 creates a new subclass "custom_material" that may be "seen" or
"used" by any view or tree which handles "network.material", this will not be
the case for Example 2.
This is due to the table (other.material) the new subclass is operating on,
which will never be recognized by previous "network.material" views or trees.
Example 1::
class custom_material(osv.osv):
_name = 'network.material'
_inherit = 'network.material'
_columns = {
'manuf_warranty': fields.boolean('Manufacturer warranty?'),
}
_defaults = {
'manuf_warranty': lambda *a: False,
}
custom_material()
.. tip:: Notice
_name == _inherit
In this example, the 'custom_material' will add a new field 'manuf_warranty' to
the object 'network.material'. New instances of this class will be visible by
views or trees operating on the superclasses table 'network.material'.
This inheritancy is usually called "class inheritance" in Object oriented
design. The child inherits data (fields) and behavior (functions) of his
parent.
Example 2::
class other_material(osv.osv):
_name = 'other.material'
_inherit = 'network.material'
_columns = {
'manuf_warranty': fields.boolean('Manufacturer warranty?'),
}
_defaults = {
'manuf_warranty': lambda *a: False,
}
other_material()
.. tip:: Notice
_name != _inherit
In this example, the 'other_material' will hold all fields specified by
'network.material' and it will additionally hold a new field 'manuf_warranty'.
All those fields will be part of the table 'other.material'. New instances of
this class will therefore never been seen by views or trees operating on the
superclasses table 'network.material'.
This type of inheritancy is known as "inheritance by prototyping" (e.g.
Javascript), because the newly created subclass "copies" all fields from the
specified superclass (prototype). The child inherits data (fields) and behavior
(functions) of his parent.
.. _inherits-link:
Inheritance by Delegation - _inherits
-------------------------------------
**Syntax :**::
class tiny_object(osv.osv)
_name = 'tiny.object'
_table = 'tiny_object'
_inherits = {
'tiny.object_a': 'object_a_id',
'tiny.object_b': 'object_b_id',
... ,
'tiny.object_n': 'object_n_id'
}
(...)
The object 'tiny.object' inherits from all the columns and all the methods from
the n objects 'tiny.object_a', ..., 'tiny.object_n'.
To inherit from multiple tables, the technique consists in adding one column to
the table tiny_object per inherited object. This column will store a foreign
key (an id from another table). The values *'object_a_id' 'object_b_id' ...
'object_n_id'* are of type string and determine the title of the columns in
which the foreign keys from 'tiny.object_a', ..., 'tiny.object_n' are stored.
This inheritance mechanism is usually called " *instance inheritance* " or "
*value inheritance* ". A resource (instance) has the VALUES of its parents.
.. _fields-link:
Fields Introduction
-------------------
Objects may contain different types of fields. Those types can be divided into
three categories: simple types, relation types and functional fields. The
simple types are integers, floats, booleans, strings, etc ... ; the relation
types are used to represent relations between objects (one2one, one2many,
many2one). Functional fields are special fields because they are not stored in
the database but calculated in real time given other fields of the view.
Here's the header of the initialization method of the class any field defined
in OpenERP inherits (as you can see in server/bin/osv/fields.py)::
def __init__(self, string='unknown', required=False, readonly=False,
domain=None, context="", states=None, priority=0, change_default=False, size=None,
ondelete="set null", translate=False, select=False, **args) :
There are a common set of optional parameters that are available to most field
types:
:change_default:
Whether or not the user can define default values on other fields depending
on the value of this field. Those default values need to be defined in
the ir.values table.
:help:
A description of how the field should be used: longer and more descriptive
than `string`. It will appear in a tooltip when the mouse hovers over the
field.
:ondelete:
How to handle deletions in a related record. Allowable values are:
'restrict', 'no action', 'cascade', 'set null', and 'set default'.
:priority: Not used?
:readonly: `True` if the user cannot edit this field, otherwise `False`.
:required:
`True` if this field must have a value before the object can be saved,
otherwise `False`.
:size: The size of the field in the database: number characters or digits.
:states:
Lets you override other parameters for specific states of this object.
Accepts a dictionary with the state names as keys and a list of name/value
tuples as the values. For example: `states={'posted':[('readonly',True)]}`
:string:
The field name as it should appear in a label or column header. Strings
containing non-ASCII characters must use python unicode objects.
For example: `'tested': fields.boolean(u'Testé')`
:translate:
`True` if the *content* of this field should be translated, otherwise
`False`.
There are also some optional parameters that are specific to some field types:
:context:
Define a variable's value visible in the view's context or an on-change
function. Used when searching child table of `one2many` relationship?
:domain:
Domain restriction on a relational field.
Default value: [].
Example: domain=[('field','=',value)])
:invisible: Hide the field's value in forms. For example, a password.
:on_change:
Default value for the `on_change` attribute in the view. This will launch
a function on the server when the field changes in the client. For example,
`on_change="onchange_shop_id(shop_id)"`.
:relation:
Used when a field is an id reference to another table. This is the name of
the table to look in. Most commonly used with related and function field
types.
:select:
Default value for the `select` attribute in the view. 1 means basic search,
and 2 means advanced search.
Type of Fields
--------------
Basic Types
+++++++++++
:boolean:
A boolean (true, false).
Syntax::
fields.boolean('Field Name' [, Optional Parameters]),
:integer:
An integer.
Syntax::
fields.integer('Field Name' [, Optional Parameters]),
:float:
A floating point number.
Syntax::
fields.float('Field Name' [, Optional Parameters]),
.. note::
The optional parameter digits defines the precision and scale of the
number. The scale being the number of digits after the decimal point
whereas the precision is the total number of significant digits in the
number (before and after the decimal point). If the parameter digits is
not present, the number will be a double precision floating point number.
Warning: these floating-point numbers are inexact (not any value can be
converted to its binary representation) and this can lead to rounding
errors. You should always use the digits parameter for monetary amounts.
Example::
'rate': fields.float(
'Relative Change rate',
digits=(12,6) [,
Optional Parameters]),
:char:
A string of limited length. The required size parameter determines its size.
Syntax::
fields.char(
'Field Name',
size=n [,
Optional Parameters]), # where ''n'' is an integer.
Example::
'city' : fields.char('City Name', size=30, required=True),
:text:
A text field with no limit in length.
Syntax::
fields.text('Field Name' [, Optional Parameters]),
:date:
A date.
Syntax::
fields.date('Field Name' [, Optional Parameters]),
:datetime:
Allows to store a date and the time of day in the same field.
Syntax::
fields.datetime('Field Name' [, Optional Parameters]),
:binary:
A binary chain
:selection:
A field which allows the user to make a selection between various predefined values.
Syntax::
fields.selection((('n','Unconfirmed'), ('c','Confirmed')),
'Field Name' [, Optional Parameters]),
.. note::
Format of the selection parameter: tuple of tuples of strings of the form::
(('key_or_value', 'string_to_display'), ... )
.. note::
You can specify a function that will return the tuple. Example ::
def _get_selection(self, cursor, user_id, context=None):
return (
('choice1', 'This is the choice 1'),
('choice2', 'This is the choice 2'))
_columns = {
'sel' : fields.selection(
_get_selection,
'What do you want ?')
}
*Example*
Using relation fields **many2one** with **selection**. In fields definitions add::
...,
'my_field': fields.many2one(
'mymodule.relation.model',
'Title',
selection=_sel_func),
...,
And then define the _sel_func like this (but before the fields definitions)::
def _sel_func(self, cr, uid, context=None):
obj = self.pool.get('mymodule.relation.model')
ids = obj.search(cr, uid, [])
res = obj.read(cr, uid, ids, ['name', 'id'], context)
res = [(r['id'], r['name']) for r in res]
return res
Relational Types
++++++++++++++++
:one2one:
A one2one field expresses a one:to:one relation between two objects. It is
deprecated. Use many2one instead.
Syntax::
fields.one2one('other.object.name', 'Field Name')
:many2one:
Associates this object to a parent object via this Field. For example
Department an Employee belongs to would Many to one. i.e Many employees will
belong to a Department
Syntax::
fields.many2one(
'other.object.name',
'Field Name',
optional parameters)
Optional parameters:
- ondelete: What should happen when the resource this field points to is deleted.
+ Predefined value: "cascade", "set null", "restrict", "no action", "set default"
+ Default value: "set null"
- required: True
- readonly: True
- select: True - (creates an index on the Foreign Key field)
*Example* ::
'commercial': fields.many2one(
'res.users',
'Commercial',
ondelete='cascade'),
:one2many:
TODO
Syntax::
fields.one2many(
'other.object.name',
'Field relation id',
'Fieldname',
optional parameter)
Optional parameters:
- invisible: True/False
- states: ?
- readonly: True/False
*Example* ::
'address': fields.one2many(
'res.partner.address',
'partner_id',
'Contacts'),
:many2many:
TODO
Syntax::
fields.many2many('other.object.name',
'relation object',
'actual.object.id',
'other.object.id',
'Field Name')
Where:
- other.object.name is the other object which belongs to the relation
- relation object is the table that makes the link
- actual.object.id and other.object.id are the fields' names used in the relation table
Example::
'category_ids':
fields.many2many(
'res.partner.category',
'res_partner_category_rel',
'partner_id',
'category_id',
'Categories'),
To make it bidirectional (= create a field in the other object)::
class other_object_name2(osv.osv):
_inherit = 'other.object.name'
_columns = {
'other_fields': fields.many2many(
'actual.object.name',
'relation object',
'actual.object.id',
'other.object.id',
'Other Field Name'),
}
other_object_name2()
Example::
class res_partner_category2(osv.osv):
_inherit = 'res.partner.category'
_columns = {
'partner_ids': fields.many2many(
'res.partner',
'res_partner_category_rel',
'category_id',
'partner_id',
'Partners'),
}
res_partner_category2()
:related:
Sometimes you need to refer to the relation of a relation. For example,
supposing you have objects: City -> State -> Country, and you need to refer to
the Country from a City, you can define a field as below in the City object::
'country_id': fields.related(
'state_id',
'country_id',
type="many2one",
relation="res.country",
string="Country",
store=False)
Where:
- The first set of parameters are the chain of reference fields to
follow, with the desired field at the end.
- :guilabel:`type` is the type of that desired field.
- Use :guilabel:`relation` if the desired field is still some kind of
reference. :guilabel:`relation` is the table to look up that
reference in.
Functional Fields
+++++++++++++++++
A functional field is a field whose value is calculated by a function (rather
than being stored in the database).
**Parameters:** ::
fnct, arg=None, fnct_inv=None, fnct_inv_arg=None, type="float",
fnct_search=None, obj=None, method=False, store=False, multi=False
where
* :guilabel:`fnct` is the function or method that will compute the field
value. It must have been declared before declaring the functional field.
* :guilabel:`fnct_inv` is the function or method that will allow writing
values in that field.
* :guilabel:`type` is the field type name returned by the function. It can
be any field type name except function.
* :guilabel:`fnct_search` allows you to define the searching behaviour on
that field.
* :guilabel:`method` whether the field is computed by a method (of an
object) or a global function
* :guilabel:`store` If you want to store field in database or not. Default
is False.
* :guilabel:`multi` is a group name. All fields with the same `multi`
parameter will be calculated in a single function call.
fnct parameter
""""""""""""""
If *method* is True, the signature of the method must be::
def fnct(self, cr, uid, ids, field_name, arg, context):
otherwise (if it is a global function), its signature must be::
def fnct(cr, table, ids, field_name, arg, context):
Either way, it must return a dictionary of values of the form
**{id'_1_': value'_1_', id'_2_': value'_2_',...}.**
The values of the returned dictionary must be of the type specified by the type
argument in the field declaration.
If *multi* is set, then *field_name* is replaced by *field_names*: a list
of the field names that should be calculated. Each value in the returned
dictionary is also a dictionary from field name to value. For example, if the
fields `'name'`, and `'age'` are both based on the `vital_statistics` function,
then the return value of `vital_statistics` might look like this when `ids` is
`[1, 2, 5]`::
{
1: {'name': 'Bob', 'age': 23},
2: {'name': 'Sally', 'age', 19},
5: {'name': 'Ed', 'age': 62}
}
fnct_inv parameter
""""""""""""""""""
If *method* is true, the signature of the method must be::
def fnct(self, cr, uid, ids, field_name, field_value, arg, context):
otherwise (if it is a global function), it should be::
def fnct(cr, table, ids, field_name, field_value, arg, context):
fnct_search parameter
"""""""""""""""""""""
If method is true, the signature of the method must be::
def fnct(self, cr, uid, obj, name, args, context):
otherwise (if it is a global function), it should be::
def fnct(cr, uid, obj, name, args, context):
The return value is a list containing 3-part tuples which are used in search function::
return [('id','in',[1,3,5])]
*obj* is the same as *self*, and *name* receives the field name. *args* is a list
of 3-part tuples containing search criteria for this field, although the search
function may be called separately for each tuple.
Example
"""""""
Suppose we create a contract object which is :
.. code-block:: python
class hr_contract(osv.osv):
_name = 'hr.contract'
_description = 'Contract'
_columns = {
'name' : fields.char('Contract Name', size=30, required=True),
'employee_id' : fields.many2one('hr.employee', 'Employee', required=True),
'function' : fields.many2one('res.partner.function', 'Function'),
}
hr_contract()
If we want to add a field that retrieves the function of an employee by looking its current contract, we use a functional field. The object hr_employee is inherited this way:
.. code-block:: python
class hr_employee(osv.osv):
_name = "hr.employee"
_description = "Employee"
_inherit = "hr.employee"
_columns = {
'contract_ids' : fields.one2many('hr.contract', 'employee_id', 'Contracts'),
'function' : fields.function(
_get_cur_function_id,
type='many2one',
obj="res.partner.function",
method=True,
string='Contract Function'),
}
hr_employee()
.. note:: three points
* :guilabel:`type` ='many2one' is because the function field must create
a many2one field; function is declared as a many2one in hr_contract also.
* :guilabel:`obj` ="res.partner.function" is used to specify that the
object to use for the many2one field is res.partner.function.
* We called our method :guilabel:`_get_cur_function_id` because its role
is to return a dictionary whose keys are ids of employees, and whose
corresponding values are ids of the function of those employees. The
code of this method is:
.. code-block:: python
def _get_cur_function_id(self, cr, uid, ids, field_name, arg, context):
for i in ids:
#get the id of the current function of the employee of identifier "i"
sql_req= """
SELECT f.id AS func_id
FROM hr_contract c
LEFT JOIN res_partner_function f ON (f.id = c.function)
WHERE
(c.employee_id = %d)
""" % (i,)
cr.execute(sql_req)
sql_res = cr.dictfetchone()
if sql_res: #The employee has one associated contract
res[i] = sql_res['func_id']
else:
#res[i] must be set to False and not to None because of XML:RPC
# "cannot marshal None unless allow_none is enabled"
res[i] = False
return res
The id of the function is retrieved using a SQL query. Note that if the query
returns no result, the value of sql_res['func_id'] will be None. We force the
False value in this case value because XML:RPC (communication between the server
and the client) doesn't allow to transmit this value.
store Parameter
"""""""""""""""
It will calculate the field and store the result in the table. The field will be
recalculated when certain fields are changed on other objects. It uses the
following syntax:
.. code-block:: python
store = {
'object_name': (
function_name,
['field_name1', 'field_name2'],
priority)
}
It will call function function_name when any changes are written to fields in the
list ['field1','field2'] on object 'object_name'. The function should have the
following signature::
def function_name(self, cr, uid, ids, context=None):
Where `ids` will be the ids of records in the other object's table that have
changed values in the watched fields. The function should return a list of ids
of records in its own table that should have the field recalculated. That list
will be sent as a parameter for the main function of the field.
Here's an example from the membership module:
.. code-block:: python
'membership_state':
fields.function(
_membership_state,
method=True,
string='Current membership state',
type='selection',
selection=STATE,
store={
'account.invoice': (_get_invoice_partner, ['state'], 10),
'membership.membership_line': (_get_partner_id,['state'], 10),
'res.partner': (
lambda self, cr, uid, ids, c={}: ids,
['free_member'],
10)
}),
Property Fields
+++++++++++++++
.. describe:: Declaring a property
A property is a special field: fields.property.
.. code-block:: python
class res_partner(osv.osv):
_name = "res.partner"
_inherit = "res.partner"
_columns = {
'property_product_pricelist':
fields.property(
'product.pricelist',
type='many2one',
relation='product.pricelist',
string="Sale Pricelist",
method=True,
view_load=True,
group_name="Pricelists Properties"),
}
Then you have to create the default value in a .XML file for this property:
.. code-block:: xml
<record model="ir.property" id="property_product_pricelist">
<field name="name">property_product_pricelist</field>
<field name="fields_id" search="[('model','=','res.partner'),
('name','=','property_product_pricelist')]"/>
<field name="value" eval="'product.pricelist,'+str(list0)"/>
</record>
..
.. tip::
if the default value points to a resource from another module, you can use the ref function like this:
<field name="value" eval="'product.pricelist,'+str(ref('module.data_id'))"/>
**Putting properties in forms**
To add properties in forms, just put the <properties/> tag in your form. This will automatically add all properties fields that are related to this object. The system will add properties depending on your rights. (some people will be able to change a specific property, others won't).
Properties are displayed by section, depending on the group_name attribute. (It is rendered in the client like a separator tag).
**How does this work ?**
The fields.property class inherits from fields.function and overrides the read and write method. The type of this field is many2one, so in the form a property is represented like a many2one function.
But the value of a property is stored in the ir.property class/table as a complete record. The stored value is a field of type reference (not many2one) because each property may point to a different object. If you edit properties values (from the administration menu), these are represented like a field of type reference.
When you read a property, the program gives you the property attached to the instance of object you are reading. If this object has no value, the system will give you the default property.
The definition of a property is stored in the ir.model.fields class like any other fields. In the definition of the property, you can add groups that are allowed to change to property.
**Using properties or normal fields**
When you want to add a new feature, you will have to choose to implement it as a property or as normal field. Use a normal field when you inherit from an object and want to extend this object. Use a property when the new feature is not related to the object but to an external concept.
Here are a few tips to help you choose between a normal field or a property:
Normal fields extend the object, adding more features or data.
A property is a concept that is attached to an object and have special features:
* Different value for the same property depending on the company
* Rights management per field
* It's a link between resources (many2one)
**Example 1: Account Receivable**
The default "Account Receivable" for a specific partner is implemented as a property because:
* This is a concept related to the account chart and not to the partner, so it is an account property that is visible on a partner form. Rights have to be managed on this fields for accountants, these are not the same rights that are applied to partner objects. So you have specific rights just for this field of the partner form: only accountants may change the account receivable of a partner.
* This is a multi-company field: the same partner may have different account receivable values depending on the company the user belongs to. In a multi-company system, there is one account chart per company. The account receivable of a partner depends on the company it placed the sale order.
* The default account receivable is the same for all partners and is configured from the general property menu (in administration).
.. note::
One interesting thing is that properties avoid "spaghetti" code. The account module depends on the partner (base) module. But you can install the partner (base) module without the accounting module. If you add a field that points to an account in the partner object, both objects will depend on each other. It's much more difficult to maintain and code (for instance, try to remove a table when both tables are pointing to each others.)
**Example 2: Product Times**
The product expiry module implements all delays related to products: removal date, product usetime, ... This module is very useful for food industries.
This module inherits from the product.product object and adds new fields to it:
.. code-block:: python
class product_product(osv.osv):
_inherit = 'product.product'
_name = 'product.product'
_columns = {
'life_time': fields.integer('Product lifetime'),
'use_time': fields.integer('Product usetime'),
'removal_time': fields.integer('Product removal time'),
'alert_time': fields.integer('Product alert time'),
}
product_product()
..
This module adds simple fields to the product.product object. We did not use properties because:
* We extend a product, the life_time field is a concept related to a product, not to another object.
* We do not need a right management per field, the different delays are managed by the same people that manage all products.
ORM methods
-----------
Keeping the context in ORM methods
++++++++++++++++++++++++++++++++++
In OpenObject, the context holds very important data such as the language in
which a document must be written, whether function field needs updating or not,
etc.
When calling an ORM method, you will probably already have a context - for
example the framework will provide you with one as a parameter of almost
every method.
If you do have a context, it is very important that you always pass it through
to every single method you call.
This rule also applies to writing ORM methods. You should expect to receive a
context as parameter, and always pass it through to every other method you call..

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.. _module-dev-actions:
=================
Menus and Actions
=================
Menus
=====
Menus are records in the ``ir.ui.menu`` table. In order to create a new
menu entry, you can directly create a record using the ``record`` tag.
.. code-block:: xml
<record id="menu_xml_id" model="ir.ui.menu">
<field name="name">My Menu</field>
<field name="action" ref="action_xml_id"/>
<field name="sequence" eval="<integer>"/>
<field name="parent_id" ref="parent_menu_xml_id"/>
</record>
There is a shortcut by using the ``menuitem`` tag that **you should use
preferentially**. It offers a flexible way to easily define the menu entry
along with icons and other fields.
.. code-block:: xml
<menuitem id="menu_xml_id"
name="My Menu"
action="action_xml_id"
icon="NAME_FROM_LIST"
groups="groupname"
sequence="<integer>"
parent="parent_menu_xml_id"
/>
Where
- ``id`` specifies the **xml identifier** of the menu item in the menu
items table. This identifier must be unique. Mandatory field.
- ``name`` defines the menu name that will be displayed in the client.
Mandatory field.
- ``action`` specifies the identifier of the attached action defined
in the action table (``ir.actions.act_window``). This field is not
mandatory : you can define menu elements without associating actions
to them. This is useful when defining custom icons for menu elements
that will act as folders. This is how custom icons for "Projects" or
"Human Resources" in OpenERP are defined).
- ``groups`` specifies which group of user can see the menu item.
(example : groups="admin"). See section " Management of Access Rights"
for more information. Multiple groups should be separated by a ','
(example: groups="admin,user")
- ``sequence`` is an integer that is used to sort the menu item in the
menu. The higher the sequence number, the downer the menu item. This
argument is not mandatory: if sequence is not specified, the menu item
gets a default sequence number of 10. Menu items with the same sequence
numbers are sorted by order of creation (``_order = "*sequence,id*"``).
The main current limitation of using ``menuitem`` is that the menu action must be an
``act_window`` action. This kind of actions is the most used action in OpenERP.
However for some menus you will use other actions. For example, the Feeds
page that comes with the mail module is a client action. For this kind of
menu entry, you can combine both declaration, as defined in the mail module :
.. code-block:: xml
<!-- toplevel menu -->
<menuitem id="mail_feeds_main" name="Feeds" sequence="0"
web_icon="static/src/img/feeds.png"
web_icon_hover="static/src/img/feeds-hover.png" />
<record id="mail_feeds_main" model="ir.ui.menu">
<field name="action" ref="action_mail_all_feeds"/>
</record>
Actions
=======
The actions define the behavior of the system in response to the actions
of the users ; login of a new user, double-click on an invoice, click on the action button, ...
There are different types of simple actions:
* **Window**: Opening of a new window
* **Report**: The printing of a report
o Custom Report: The personalized reports
o RML Report: The XSL:RML reports
* **Execute**: The execution of a method on the server side
* **Group**: Gather some actions in one group
The actions are used for the following events:
* User connection,
* The user clicks on a menu,
* The user clicks on the icon 'print' or 'action'.
Opening of the menu
+++++++++++++++++++
When the user open the option of the menu "Operations > Partners > Partners Contact", the next steps are done to give the user information on the action to undertake.
1. Search the action in the IR.
2. Execution of the action
1. If the action is the type Opening the Window; it indicates to the user that a new window must be opened for a selected object and it gives you the view (form or list) and the filed to use (only the pro-forma invoice).
2. The user asks the object and receives information necessary to trace a form; the fields description and the XML view.
User connection
+++++++++++++++
When a new user is connected to the server, the client must search the action to use for the first screen of this user. Generally, this action is: open the menu in the 'Operations' section.
The steps are:
1. Reading of a user file to obtain ACTION_ID
2. Reading of the action and execution of this one
The fields
++++++++++
**Action Name**
The action name
**Action Type**
Always 'ir.actions.act_window'
**View Ref**
The view used for showing the object
**Model**
The model of the object to post
**Type of View**
The type of view (Tree/Form)
**Domain Value**
The domain that decreases the visible data with this view
The view
--------
The view describes how the edition form or the data tree/list appear on screen. The views can be of 'Form' or 'Tree' type, according to whether they represent a form for the edition or a list/tree for global data viewing.
A form can be called by an action opening in 'Tree' mode. The form view is generally opened from the list mode (like if the user pushes on 'switch view').
The domain
----------
This parameter allows you to regulate which resources are visible in a selected view.(restriction)
For example, in the invoice case, you can define an action that opens a view that shows only invoices not paid.
The domains are written in python; list of tuples. The tuples have three elements;
* the field on which the test must be done
* the operator used for the test (<, >, =, like)
* the tested value
For example, if you want to obtain only 'Draft' invoice, use the following domain; [('state','=','draft')]
In the case of a simple view, the domain define the resources which are the roots of the tree. The other resources, even if they are not from a part of the domain will be posted if the user develop the branches of the tree.
Window Action
-------------
Actions are explained in more detail in section "Administration Modules - Actions". Here's the template of an action XML record :
::
<record model="ir.actions.act_window" id="action_id_1">
<field name="name">action.name</field>
<field name="view_id" ref="view_id_1"/>
<field name="domain">["list of 3-tuples (max 250 characters)"]</field>
<field name="context">{"context dictionary (max 250 characters)"}</field>
<field name="res_model">Open.object</field>
<field name="view_type">form|tree</field>
<field name="view_mode">form,tree|tree,form|form|tree</field>
<field name="usage">menu</field>
<field name="target">new</field>
</record>
**Where**
* **id** is the identifier of the action in the table "ir.actions.act_window". It must be unique.
* **name** is the name of the action (mandatory).
* **view_id** is the name of the view to display when the action is activated. If this field is not defined, the view of a kind (list or form) associated to the object res_model with the highest priority field is used (if two views have the same priority, the first defined view of a kind is used).
* **domain** is a list of constraints used to refine the results of a selection, and hence to get less records displayed in the view. Constraints of the list are linked together with an AND clause : a record of the table will be displayed in the view only if all the constraints are satisfied.
* **context** is the context dictionary which will be visible in the view that will be opened when the action is activated. Context dictionaries are declared with the same syntax as Python dictionaries in the XML file. For more information about context dictionaries, see section " The context Dictionary".
* **res_model** is the name of the object on which the action operates.
* **view_type** is set to form when the action must open a new form view, and is set to tree when the action must open a new tree view.
* **view_mode** is only considered if view_type is form, and ignored otherwise. The four possibilities are :
- **form,tree** : the view is first displayed as a form, the list view can be displayed by clicking the "alternate view button" ;
- **tree,form** : the view is first displayed as a list, the form view can be displayed by clicking the "alternate view button" ;
- **form** : the view is displayed as a form and there is no way to switch to list view ;
- **tree** : the view is displayed as a list and there is no way to switch to form view.
(version 5 introduced **graph** and **calendar** views)
* **usage** is used [+ ***TODO*** +]
* **target** the view will open in new window like wizard.
* **context** will be passed to the action itself and added to its global context
.. code-block:: xml
<record model="ir.actions.act_window" id="a">
<field name="name">account.account.tree1</field>
<field name="res_model">account.account</field>
<field name="view_type">tree</field>
<field name="view_mode">form,tree</field>
<field name="view_id" ref="v"/>
<field name="domain">[('code','=','0')]</field>
<field name="context">{'project_id': active_id}</field>
</record>
They indicate at the user that he has to open a new window in a new 'tab'.
Administration > Custom > Low Level > Base > Action > Window Actions
.. .. figure:: images/module_base_action_window.png
.. :scale: 85
.. :align: center
Examples of actions
+++++++++++++++++++
This action is declared in server/bin/addons/project/project_view.xml.
::
<record model="ir.actions.act_window" id="open_view_my_project">
<field name="name">project.project</field>
<field name="res_model">project.project</field>
<field name="view_type">tree</field>
<field name="domain">[('parent_id','=',False), ('manager', '=', uid)]</field>
<field name="view_id" ref="view_my_project" />
</record>
This action is declared in server/bin/addons/stock/stock_view.xml.
::
<record model="ir.actions.act_window" id="action_picking_form">
<field name="name">stock.picking</field>
<field name="res_model">stock.picking</field>
<field name="type">ir.actions.act_window</field>
<field name="view_type">form</field>
<field name="view_id" ref="view_picking_form"/>
<field name="context">{'contact_display': 'partner'}</field>
</record>
Url Action
-----------
Report Action
-------------
Report declaration
++++++++++++++++++
Reports in OpenERP are explained in chapter "Reports Reporting". Here's an example of a XML file that declares a RML report :
::
<?xml version="1.0"?>
<openerp>
<data>
<report id="sale_category_print"
string="Sales Orders By Categories"
model="sale.order"
name="sale_category.print"
rml="sale_category/report/sale_category_report.rml"
menu="True"
auto="False"/>
</data>
</openerp>
A report is declared using a **report tag** inside a "data" block. The different arguments of a report tag are :
* **id** : an identifier which must be unique.
* **string** : the text of the menu that calls the report (if any, see below).
* **model** : the OpenERP object on which the report will be rendered.
* **rml** : the .RML report model. Important Note : Path is relative to addons/ directory.
* **menu** : whether the report will be able to be called directly via the client or not. Setting menu to False is useful in case of reports called by wizards.
* **auto** : determines if the .RML file must be parsed using the default parser or not. Using a custom parser allows you to define additional functions to your report.
Action creation
---------------
Linking events to action
++++++++++++++++++++++++
The available type of events are:
* **client_print_multi** (print from a list or form)
* **client_action_multi** (action from a list or form)
* **tree_but_open** (double click on the item of a tree, like the menu)
* **tree_but_action** (action on the items of a tree)
To map an events to an action:
.. code-block:: xml
<record model="ir.values" id="ir_open_journal_period">
<field name="key2">tree_but_open</field>
<field name="model">account.journal.period</field>
<field name="name">Open Journal</field>
<field name="value" eval="'ir.actions.wizard,%d'%action_move_journal_line_form_select"/>
<field name="object" eval="True"/>
</record>
If you double click on a journal/period (object: account.journal.period), this will open the selected wizard. (id="action_move_journal_line_form_select").
You can use a res_id field to allow this action only if the user click on a specific object.
.. code-block:: xml
<record model="ir.values" id="ir_open_journal_period">
<field name="key2">tree_but_open</field>
<field name="model">account.journal.period</field>
<field name="name">Open Journal</field>
<field name="value" eval="'ir.actions.wizard,%d'%action_move_journal_line_form_select"/>
<field name="res_id" eval="3"/>
<field name="object" eval="True"/>
</record>
The action will be triggered if the user clicks on the account.journal.period n°3.
When you declare wizard, report or menus, the ir.values creation is automatically made with these tags:
* <menuitem... />
* <report... />
So you usually do not need to add the mapping by yourself.

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.. _module-dev-example:
==========================
Example of module creation
==========================
Getting the skeleton directory
++++++++++++++++++++++++++++++
Create a ``travel`` directory, that will contain our addon. Create **__init__.py** file and **__openerp__.py** files.
Edit the **__openerp__.py** module manifest file:
.. code-block:: python
{
"name" : "Travel agency module",
"version" : "1.1",
"author" : "Tiny",
"category" : "Generic Modules/Others",
"website" : "http://www.openerp.com",
"description": "A module to manage hotel bookings and a few other useful features.",
"depends" : ["base"],
"init_xml" : [],
"update_xml" : ["travel_view.xml"],
"active": True,
"installable": True
}
Changing the main module file
+++++++++++++++++++++++++++++
Now you need to update the travel.py script to suit the needs of your module.
We suggest you follow the Flash tutorial for this or download the travel agency
module from the 20 minutes tutorial page. ::
The documentation below is overlapping the two next step in this wiki tutorial,
so just consider them as a help and head towards the next two pages first...
The travel.py file should initially look like this:
.. code-block:: python
from osv import osv, fields
class travel_hostel(osv.osv):
_name = 'travel.hostel'
_inherit = 'res.partner'
_columns = {
'rooms_id': fields.one2many('travel.room', 'hostel_id', 'Rooms'),
'quality': fields.char('Quality', size=16),
}
_defaults = {
}
travel_hostel()
Ideally, you would copy that bunch of code several times to create all the
entities you need (travel_airport, travel_room, travel_flight). This is what
will hold the database structure of your objects, but you don't really need to
worry too much about the database side. Just filling this file will create the
system structure for you when you install the module.
Customizing the view
++++++++++++++++++++
You can now move on to editing the views. To do this, edit the custom_view.xml file. It should first look like this:
.. code-block:: xml
<openerp>
<data>
<record model="res.groups" id="group_compta_user">
<field name="name">grcompta</field>
</record>
<record model="res.groups" id="group_compta_admin">
<field name="name">grcomptaadmin</field>
</record>
<menuitem name="Administration" groups="admin,grcomptaadmin"
icon="terp-stock" id="menu_admin_compta"/>
</data>
</openerp>
This is, as you can see, an example taken from an accounting system (French
people call accounting "comptabilité", which explains the compta bit).
Defining a view is defining the interfaces the user will get when accessing
your module. Just defining a bunch of fields here should already get you
started on a complete interface. However, due to the complexity of doing it
right, we recommend, once again, that download the travel agency module example
from this link http://apps.openerp.com/
Next you should be able to create different views using other files to separate
them from your basic/admin view.

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.. _module-dev-versioning:
.. _module_versioning:
=================
Module versioning
=================
@ -40,7 +42,7 @@ functionalities can be brought together in a better module.
.. _`dependency hell`: http://en.wikipedia.org/wiki/Dependency_hell
Example
-------
=======
Whenever a new module is developed or must evolve, the above versioning policy
should be respected.

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.. _security:
==================================
Security in OpenERP: users, groups
==================================
Users and user roles are critical points concerning internal security in
OpenERP. OpenERP provides several security mechanisms concerning user roles,
all implemented in the OpenERP Server. They are implemented in the lowest
server level, which is the ORM engine. OpenERP distinguishes three different
concepts:
- user: a person identified by its login and password. Note that all employees
of a company are not necessarily OpenERP users; an user is somebody who
accesses the application.
- group: a group of users that has some access rights. A group gives its
access rights to the users that belong to the group. Ex: Sales Manager,
Accountant, etc.
- security rule: a rule that defines the access rights a given group grants
to its users. Security rules are attached to a given resource, for example
the Invoice model.
Security rules are attached to groups. Users are assigned to several groups.
This gives users the rights that are attached to their groups. Therefore
controlling user roles is done by managing user groups and adding or modifying
security rules attached to those groups.
Users
======
Users represent physical persons using OpenERP. They are identified with
a login and a password,they use OpenERP, they can edit their own preferences, ...
By default, a user has no access right. The more we assign groups to the user,
the more he or she gets rights to perform some actions. A user may belong
to several groups.
User groups
===========
The groups determine the access rights to the different resources. A user
may belong to several groups. If he belongs to several groups, we always
use the group with the highest rights for a selected resource. A group
can inherit all the rights from another group
Figure 3 shows how group membership is displayed in the web client. The user
belongs to Sales / Manager, Accounting / Manager, Administration / Access Rights,
Administration / Configuration and Human Resources / Employee groups. Those
groups define the user access rights.
Figure 3: Example of group membership for a given user
Rights
======
Security rules are attached to groups. You can assign several security
rules at the group level, each rule being of one of the following types :
- access rights are global rights on an object,
- record rules are records access filters,
- fields access right,
- workflow transition rules are operations rights.
You can also define rules that are global, i.e. they are applied to all
users, indiscriminately of the groups they belong to. For example, the
multi-company rules are global; a user can only see invoices of the companies
he or she belongs to.
Concerning configuration, it is difficult to have default generic configurations
that suit all applications. Therefore, like SAP, OpenERP is by default
pre-configured with best-practices.
Access rights
=============
Access rights are rules that define the access a user can have on a particular
object . Those global rights are defined per document type or model. Rights
follow the CRUD model: create, read (search), update (write), delete. For
example, you can define rules on invoice creation. By default, adding a
right to an object gives the right to all records of that specific object.
Figure 4 shows some of the access rights of the Accounting / Accountant group.
The user has some read access rights on some objects.
Figure 4: Access rights for some objects.
Record rules
++++++++++++
When accessing an object, records are filtered based on record rules. Record
rules or access filters are therefore filters that limits records of an
object a group can access. A record rule is a condition that each record
must satisfy to be created, read, updated (written) or deleted. Records
that do not meet the constraints are filtered.
For example, you can create a rule to limit a group in such a way that
users of that group will see business opportunities in which he or she is
flagged as the salesman. The rule can be salesman = connected_user. With
that rule, only records respecting the rule will be displayed.
Field access rights
+++++++++++++++++++
.. versionadded:: 7.0
OpenERP now supports real access control at the field level, not just on the view side.
Previously it was already possible to set a ``groups`` attribute on a ``<field>`` element
(or in fact most view elements), but with cosmetics effects only: the element was made
invisible on the client side, while still perfectly available for read/write access at
the RPC level.
As of OpenERP 7.0 the existing behavior is preserved on the view level, but a new ``groups``
attribute is available on all model fields, introducing a model-level access control on
each field. The syntax is the same as for the view-level attribute::
_columns = {
'secret_key': fields.char('Secret Key', groups="base.group_erp_manager,base.group_system")
}
There is a major difference with the view-level ``groups`` attribute: restricting
the access at the model level really means that the field will be completely unavailable
for users who do not belong to the authorized groups:
* Restricted fields will be **completely removed** from all related views, not just
hidden. This is important to keep in mind because it means the field value will not be
available at all on the client side, and thus unavailable e.g. for ``on_change`` calls.
* Restricted fields will not be returned as part of a call to
:meth:`~openerp.osv.orm.fields_get` or :meth:`~openerp.osv.orm.fields_view_get`
This is in order to avoid them appearing in the list of fields available for
advanced search filters, for example. This does not prevent getting the list of
a model's fields by querying ``ir.model.fields`` directly, which is fine.
* Any attempt to read or write directly the value of the restricted fields will result
in an ``AccessError`` exception.
* As a consequence of the previous item, restricted fields will not be available for
use within search filters (domains) or anything that would require read or write access.
* It is quite possible to set ``groups`` attributes for the same field both at the model
and view level, even with different values. Both will carry their effect, with the
model-level restriction taking precedence and removing the field completely in case of
restriction.
.. note:: The tests related to this feature are in ``openerp/tests/test_acl.py``.
.. warning:: At the time of writing the implementation of this feature is partial
and does not yet restrict read/write RPC access to the field.
The corresponding test is written already but currently disabled.
Workflow transition rules
+++++++++++++++++++++++++
Workflow transition rules are rules that restrict some operations to certain
groups. Those rules handle rights to go from one step to another one in the
workflow. For example, you can limit the right to validate an invoice, i.e.
going from a draft action to a validated action.
Menu accesses
=============
In OpenERP, granting access to menus can be done using user groups. A menu
that is not granted to any group is accessible to every user. It is possible
in the administration panel to define the groups that can access a given menu.
However, one should note that using groups to hide or give access to menus
is more within the filed of ergonomics or usability than within the field
of security. It is a best practice putting rules on documents instead of
putting groups on menu. For example, hiding invoices can be done by modifying
the record rule on the invoice object, and it is more efficient and safer
than hiding menus related to invoices.
Views customization
===================
Customizing views based on groups is possible in OpenERP. You can put rules
to display some fields based on group rules. However, as with menu accesses
customization, this option should not be considered for security concerns.
This way of customizing views belongs more to usability.
Administration
==============
When installing your particular instance of OpenERP, a specific first user
is installed by default. This first user is the Super User or administrator.
The administrator is by default added access rights to every existing groups,
as well as to every groups created during a new module installation. He also
has access to a specific administration interface accessible via the administration
menu, allowing the administration of OpenERP.
The administrator has rights to manage groups; he can add, create, modify
or remove groups. He may also modify links between users and groups, such
as adding or removing users. He also manages access rights. With those
privileges, the administrator can therefore precisely define security
accesses of every users of OpenERP.
There are user groups that are between normal groups and the super user.
Those groups are Administration / Configuration and Administration / Access Rights.
It gives to the users of those groups the necessary rights to configure access rights.

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@ -87,9 +87,9 @@ In addition to the above possibilities, when invoked with a non-existing module
sub-modules.
Depending on the unittest2_ class that is used to write the tests (see
``openerp.tests.common`` for some helper classes that you can re-use), a database
may be created before the test is run, and the module providing the test will
be installed on that database.
:mod:`openerp.tests.common` for some helper classes that you can re-use), a
database may be created before the test is run, and the module providing the
test will be installed on that database.
Because creating a database, installing modules, and then dropping it is
expensive, it is possible to interleave the run of the ``fast_suite`` tests
@ -98,3 +98,20 @@ each requested module is installed, its fast_suite tests are run. The database
is thus created and dropped (and the modules installed) only once.
.. _unittest2: http://pypi.python.org/pypi/unittest2
TestCase subclasses
-------------------
.. automodule:: openerp.tests.common
:members:
.. note::
The `setUp` and `tearDown` methods are not part of the tests. Uncaught
exceptions in those methods are errors, not test failures. In particular,
a failing `setUp` will not be followed by a `tearDown` causing any
allocated resource in the `setUp` to not be released by the `tearDown`.
In the :py:class:`openerp.tests.common.TransactionCase` and
:py:class:`openerp.tests.common.SingleTransactionCase`, this means the
test suite can hang because of unclosed cursors.

12
doc/06_misc.rst Normal file
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@ -0,0 +1,12 @@
=============
Miscellanous
=============
.. toctree::
:maxdepth: 2
06_misc_on_change_tips.rst
06_misc_list_font_style.rst
06_misc_need_action_specs.rst
06_misc_user_img_specs.rst
06_misc_import.rst

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@ -46,7 +46,7 @@ no other references to the sub-records in the system), they have to be
spliced into the matrix somehow. This is done by adding lines composed
*only* of o2m record fields below the main record:
.. literalinclude:: o2m.txt
.. literalinclude:: 06_misc_import_o2m.txt
the sections in double-lines represent the span of two o2m
fields. During parsing, they are extracted into their own ``data``

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@ -21,7 +21,7 @@ This class also offers several global services,:
- ``needaction_get_action_count``: as ``needaction_get_record_ids`` but returns only the number of action, not the ids (performs a search with count=True)
- ``needaction_get_user_record_references``: for a given uid, get all the records that ask this user to perform an action. Records are given as references, a list of tuples (model_name, record_id).
.. versionadded:: openobject-server.XXXX
.. versionadded:: openobject-server.4137
This revision of the needaction_mixin mechanism slighty modifies the class behavior. The ``ir_needaction_mixin`` class now adds a function field on models inheriting from the class. This field allows to state whether a given record has a needaction for the current user. This is usefull if you want to customize views according to the needaction feature. For example, you may want to set records in bold in a list view if the current user has an action to perform on the record. This makes the class not a pure abstract class, but allows to easily use the action information. The field definition is::
@ -61,7 +61,7 @@ users (those whose attention is required on the record)
Menu modification
+++++++++++++++++
.. versionchanged:: openobject-server.XXXX
.. versionchanged:: openobject-server.4137
This revision adds three functional fields to ``ir.ui.menu`` model :
- ``uses_needaction``: boolean field. If the menu entry action is an act_window action, and if this action is related to a model that uses the need_action mechanism, this field is set to true. Otherwise, it is false.

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@ -0,0 +1,51 @@
.. _on_change_tips:
On Change Methods
=================
Definition of on change methods in a view looks like this:
::
<field name="name" on_change="name_change(name, address, city)"/>
And here is the corresponding method in the model:
::
def name_change(self, cr, uid, ids, name, address, city, context=None):
...
return {
'value': {
'address': ...
'city': ...
}
}
On change methods can be confusing when people use them, here are a list of clarifications to avoid any misconception:
- On change methods can be executed during the creation of a row, long before it is effectively saved into the database.
- Fields are *not* validated before going through a on change methods. As an example, a field marqued as required can be False.
- On change methods can read data in the database but should *never* attempt to write anything, this is always a strong conception
problem.
- The format of the values passed to an on change method is exactly the same than the one passed to the write() method. So
the on change method must be able to handle any format used for all the fields it process. The following list describe some fields
that can have an unusual format.
- *float*: Due to the way JSON represents numbers and the way the JSON library of Python handles it, a float field will not always
be represented as a python float type. When the number can be represented as an integer it will appear as a python integer type.
This can be a problem when using some mathematical operations (example: price / 2), so it is a good practice to always cast any number
to float when you want to handle floats in on change methods.
- *one2many and many2many*: There are plenty of misconception about x2many fields in on change methods. The reality is, in fact, quite
complex. x2many are defined by a list of operations, each operation was given a number (0 -> create, 1 -> write, ect...) and has
its own semantic. To be able to use one2many and many2many in on change methods, you are strongly encourage to use the
resolve_2many_commands() method. Here is a sample usage:
::
values = self.resolve_2many_commands(cr, uid, 'my_o2m', my_o2m_values, ['price', 'tax'], context)
This code will convert the complex list of operations that makes the o2m value into a simple list of dictionaries containing the fields
'price' and 'tax', which is way simpler to handle in most on change methods. Please note that you can also return a list of
dictionaries as the new value of a one2many, it will replace the actual rows contained in that one2many (but it will also remove the
previous ones).

101
doc/09_deployment.rst Normal file
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@ -0,0 +1,101 @@
.. _using-gunicorn:
Deploying with Gunicorn
=======================
Starting with OpenERP 6.1, the server and web addons are WSGI_ compliant. In
particular, support for the Gunicorn_ HTTP server is available. For some
background information and motivation, please read http://www.openerp.com/node/1106.
To install Gunicorn, please refer to Gunicorn's website.
.. _Gunicorn: http://gunicorn.org/
.. _WSGI: http://en.wikipedia.org/wiki/Web_Server_Gateway_Interface
Summary
-------
Configuring and starting an OpenERP server with Gunicorn is straightfoward. The
different sections below give more details but the following steps are all it
takes::
1. Use a configuration file, passing it to ``gunicorn`` using the ``-c``
option.
2. Within the same configuration file, also configure OpenERP.
3. Run ``gunicorn openerp:wsgi.core.application -c gunicorn.conf.py``.
Sample configuration file
-------------------------
A sample ``gunicorn.conf.py`` configuration file for Gunicorn can be found in
the OpenERP server source tree. It is fairly well commented and easily
customizable for your own usage. While reading the remaining of this page, it
is advised you take a look at the sample ``gunicorn.conf.py`` file as it makes
things easier to follow.
Configuration
-------------
Gunicorn can be configured by a configuration file and/or command-line
arguments. For a list of available options, you can refer to the official
Gunicorn documentation http://gunicorn.org/configure.html.
When the OpenERP server is started on its own, by using the ``openerp-server``
script, it can also be configured by a configuration file or its command-line
arguments. But when it is run via Gunicorn, it is no longer the case. Instead,
as the Gunicorn configuration file is a full-fledged Python file, we can
``import openerp`` in it and configure directly the server.
The principle can be summarized with this three lines (although they are spread
across the whole sample ``gunicorn.conf.py`` file)::
import openerp
conf = openerp.tools.config
conf['addons_path'] = '/home/openerp/addons/trunk,/home/openerp/web/trunk/addons'
The above three lines first import the ``openerp`` library (i.e. the one
containing the OpenERP server implementation). The second one is really to
shorten repeated usage of the same variable. The third one sets a parameter, in
this case the equivalent of the ``--addons-path`` command-line option.
Finally, Gunicorn offers a few hooks so we can call our own code at some points
in its execution. The most important one is the ``on_starting`` hook. It lets
us properly initialize the ``openerp`` library before Gunicorn starts handling
requests. ``pre_request`` and ``post_request`` are called before and after
requests are handled. We provide functions in ``openerp.wsgi.core`` that can be
used to define those hooks: a typical Gunicorn configuration for OpenERP will
thus contains::
on_starting = openerp.wsgi.core.on_starting
pre_request = openerp.wsgi.core.pre_request
post_request = openerp.wsgi.core.post_request
Running
-------
Once a proper configuration file is available, running the OpenERP server with
Gunicorn can be done with the following command::
> gunicorn openerp:wsgi.core.application -c gunicorn.conf.py
``openerp`` must be importable by Python. The simplest way is to run the above
command from the server source directory (i.e. the directory containing the
``openerp`` module). Alternatively, the module can be installed on your machine
as a regular Python library or added to your ``PYTHONPATH``.
Running behind a reverse proxy
------------------------------
If you intend to run Gunicorn behind a reverse proxy (nginx_ is recommended),
an alternative entry point is available in ``openerp.wsgi.proxied``. That entry
point uses werkzeug's ProxyFix_ class to set a few headers. You first have to
explicitely import that sub-module if you want to use it. So add this line in
the configuration file::
import openerp.wsgi.proxied
and then adapt the command-line::
> gunicorn openerp:wsgi.proxied.application -c gunicorn.conf.py
.. _nginx: http://nginx.org/en/
.. _ProxyFix: http://werkzeug.pocoo.org/docs/contrib/fixers/#werkzeug.contrib.fixers.ProxyFix

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@ -1,10 +0,0 @@
.. _openerp library:
Server-side library
-------------------
.. automodule:: openerp
:members:
:undoc-members:

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@ -1,45 +0,0 @@
Field-level access control
==========================
.. versionadded:: 7.0
OpenERP now supports real access control at the field level, not just on the view side.
Previously it was already possible to set a ``groups`` attribute on a ``<field>`` element
(or in fact most view elements), but with cosmetics effects only: the element was made
invisible on the client side, while still perfectly available for read/write access at
the RPC level.
As of OpenERP 7.0 the existing behavior is preserved on the view level, but a new ``groups``
attribute is available on all model fields, introducing a model-level access control on
each field. The syntax is the same as for the view-level attribute::
_columns = {
'secret_key': fields.char('Secret Key', groups="base.group_erp_manager,base.group_system")
}
There is a major difference with the view-level ``groups`` attribute: restricting
the access at the model level really means that the field will be completely unavailable
for users who do not belong to the authorized groups:
* Restricted fields will be **completely removed** from all related views, not just
hidden. This is important to keep in mind because it means the field value will not be
available at all on the client side, and thus unavailable e.g. for ``on_change`` calls.
* Restricted fields will not be returned as part of a call to
:meth:`~openerp.osv.orm.fields_get` or :meth:`~openerp.osv.orm.fields_view_get`
This is in order to avoid them appearing in the list of fields available for
advanced search filters, for example. This does not prevent getting the list of
a model's fields by querying ``ir.model.fields`` directly, which is fine.
* Any attempt to read or write directly the value of the restricted fields will result
in an ``AccessError`` exception.
* As a consequence of the previous item, restricted fields will not be available for
use within search filters (domains) or anything that would require read or write access.
* It is quite possible to set ``groups`` attributes for the same field both at the model
and view level, even with different values. Both will carry their effect, with the
model-level restriction taking precedence and removing the field completely in case of
restriction.
.. note:: The tests related to this feature are in ``openerp/tests/test_acl.py``.
.. warning:: At the time of writing the implementation of this feature is partial
and does not yet restrict read/write RPC access to the field.
The corresponding test is written already but currently disabled.

View File

@ -1,20 +0,0 @@
Start-up script
---------------
.. versionadded:: 6.1
To run the OpenERP server, the conventional approach is to use the
`openerp-server` script. It loads the :ref:`openerp library`, sets a few
configuration variables corresponding to command-line arguments, and starts to
listen to incoming connections from clients.
Depending on your deployment needs, you can write such a start-up script very
easily. We also recommend you take a look at an alternative tool called
`openerp-command` that can, among other things, launch the server.
Yet another alternative is to use a WSGI-compatible HTTP server and let it call
into one of the WSGI entry points of the server.

View File

@ -1,44 +1,31 @@
.. OpenERP Web documentation master file, created by
sphinx-quickstart on Fri Mar 18 16:31:55 2011.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
:orphan:
Welcome to OpenERP Web's documentation!
=======================================
========================================
OpenERP Server Developers Documentation
========================================
Contents:
.. toctree::
:maxdepth: 1
changelog-6.2
async
rpc
widget
search-view
list-view
form-notes
Older stuff
-----------
OpenERP Server
''''''''''''''
.. toctree::
:maxdepth: 2
getting-started
production
widgets
addons
development
project
old-version
01_getting_started
02_architecture
03_module_dev
04_security
05_test_framework
06_misc
09_deployment
OpenERP Server API
''''''''''''''''''
.. toctree::
:maxdepth: 1
api_core.rst
api_models.rst
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`

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@ -1,21 +0,0 @@
OpenERP Server
''''''''''''''
.. toctree::
:maxdepth: 1
import
module-versioning
test-framework
Changed in 7.0
++++++++++++++
.. toctree::
:maxdepth: 1
api/user_img_specs
api/need_action_specs
api/font_style
api/field_level_acl

View File

@ -1,270 +1,7 @@
#!/usr/bin/env python
# -*- coding: utf-8 -*-
##############################################################################
#
# OpenERP, Open Source Management Solution
# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
"""
OpenERP - Server
OpenERP is an ERP+CRM program for small and medium businesses.
The whole source code is distributed under the terms of the
GNU Public Licence.
(c) 2003-TODAY, Fabien Pinckaers - OpenERP SA
"""
import logging
import os
import signal
import sys
import threading
import traceback
import time
import openerp
__author__ = openerp.release.author
__version__ = openerp.release.version
# Also use the `openerp` logger for the main script.
_logger = logging.getLogger('openerp')
def check_root_user():
""" Exit if the process's user is 'root' (on POSIX system)."""
if os.name == 'posix':
import pwd
if pwd.getpwuid(os.getuid())[0] == 'root' :
sys.stderr.write("Running as user 'root' is a security risk, aborting.\n")
sys.exit(1)
def check_postgres_user():
""" Exit if the configured database user is 'postgres'.
This function assumes the configuration has been initialized.
"""
config = openerp.tools.config
if config['db_user'] == 'postgres':
sys.stderr.write("Using the database user 'postgres' is a security risk, aborting.")
sys.exit(1)
def report_configuration():
""" Log the server version and some configuration values.
This function assumes the configuration has been initialized.
"""
config = openerp.tools.config
_logger.info("OpenERP version %s", __version__)
for name, value in [('addons paths', config['addons_path']),
('database hostname', config['db_host'] or 'localhost'),
('database port', config['db_port'] or '5432'),
('database user', config['db_user'])]:
_logger.info("%s: %s", name, value)
def setup_pid_file():
""" Create a file with the process id written in it.
This function assumes the configuration has been initialized.
"""
config = openerp.tools.config
if config['pidfile']:
fd = open(config['pidfile'], 'w')
pidtext = "%d" % (os.getpid())
fd.write(pidtext)
fd.close()
def preload_registry(dbname):
""" Preload a registry, and start the cron."""
try:
db, registry = openerp.pooler.get_db_and_pool(dbname, update_module=openerp.tools.config['init'] or openerp.tools.config['update'], pooljobs=False)
# jobs will start to be processed later, when openerp.cron.start_master_thread() is called by openerp.service.start_services()
registry.schedule_cron_jobs()
except Exception:
_logger.exception('Failed to initialize database `%s`.', dbname)
def run_test_file(dbname, test_file):
""" Preload a registry, possibly run a test file, and start the cron."""
try:
db, registry = openerp.pooler.get_db_and_pool(dbname, update_module=config['init'] or config['update'], pooljobs=False)
cr = db.cursor()
_logger.info('loading test file %s', test_file)
openerp.tools.convert_yaml_import(cr, 'base', file(test_file), 'test', {}, 'test', True)
cr.rollback()
cr.close()
except Exception:
_logger.exception('Failed to initialize database `%s` and run test file `%s`.', dbname, test_file)
def export_translation():
config = openerp.tools.config
dbname = config['db_name']
if config["language"]:
msg = "language %s" % (config["language"],)
else:
msg = "new language"
_logger.info('writing translation file for %s to %s', msg,
config["translate_out"])
fileformat = os.path.splitext(config["translate_out"])[-1][1:].lower()
buf = file(config["translate_out"], "w")
cr = openerp.pooler.get_db(dbname).cursor()
openerp.tools.trans_export(config["language"],
config["translate_modules"] or ["all"], buf, fileformat, cr)
cr.close()
buf.close()
_logger.info('translation file written successfully')
def import_translation():
config = openerp.tools.config
context = {'overwrite': config["overwrite_existing_translations"]}
dbname = config['db_name']
cr = openerp.pooler.get_db(dbname).cursor()
openerp.tools.trans_load( cr, config["translate_in"], config["language"],
context=context)
cr.commit()
cr.close()
# Variable keeping track of the number of calls to the signal handler defined
# below. This variable is monitored by ``quit_on_signals()``.
quit_signals_received = 0
def signal_handler(sig, frame):
""" Signal handler: exit ungracefully on the second handled signal.
:param sig: the signal number
:param frame: the interrupted stack frame or None
"""
global quit_signals_received
quit_signals_received += 1
if quit_signals_received > 1:
# logging.shutdown was already called at this point.
sys.stderr.write("Forced shutdown.\n")
os._exit(0)
def dumpstacks(sig, frame):
""" Signal handler: dump a stack trace for each existing thread."""
# code from http://stackoverflow.com/questions/132058/getting-stack-trace-from-a-running-python-application#answer-2569696
# modified for python 2.5 compatibility
threads_info = dict([(th.ident, {'name': th.name,
'uid': getattr(th,'uid','n/a')})
for th in threading.enumerate()])
code = []
for threadId, stack in sys._current_frames().items():
thread_info = threads_info.get(threadId)
code.append("\n# Thread: %s (id:%s) (uid:%s)" % \
(thread_info and thread_info['name'] or 'n/a',
threadId,
thread_info and thread_info['uid'] or 'n/a'))
for filename, lineno, name, line in traceback.extract_stack(stack):
code.append('File: "%s", line %d, in %s' % (filename, lineno, name))
if line:
code.append(" %s" % (line.strip()))
_logger.info("\n".join(code))
def setup_signal_handlers():
""" Register the signal handler defined above. """
SIGNALS = map(lambda x: getattr(signal, "SIG%s" % x), "INT TERM".split())
if os.name == 'posix':
map(lambda sig: signal.signal(sig, signal_handler), SIGNALS)
signal.signal(signal.SIGQUIT, dumpstacks)
elif os.name == 'nt':
import win32api
win32api.SetConsoleCtrlHandler(lambda sig: signal_handler(sig, None), 1)
def quit_on_signals():
""" Wait for one or two signals then shutdown the server.
The first SIGINT or SIGTERM signal will initiate a graceful shutdown while
a second one if any will force an immediate exit.
"""
# Wait for a first signal to be handled. (time.sleep will be interrupted
# by the signal handler.) The try/except is for the win32 case.
try:
while quit_signals_received == 0:
time.sleep(60)
except KeyboardInterrupt:
pass
config = openerp.tools.config
if config['pidfile']:
os.unlink(config['pidfile'])
openerp.service.stop_services()
sys.exit(0)
def configure_babel_localedata_path():
# Workaround: py2exe and babel.
if hasattr(sys, 'frozen'):
import babel
babel.localedata._dirname = os.path.join(os.path.dirname(sys.executable), 'localedata')
def main():
os.environ["TZ"] = "UTC"
check_root_user()
openerp.tools.config.parse_config(sys.argv[1:])
check_postgres_user()
openerp.netsvc.init_logger()
report_configuration()
config = openerp.tools.config
configure_babel_localedata_path()
setup_signal_handlers()
if config["test_file"]:
run_test_file(config['db_name'], config['test_file'])
sys.exit(0)
if config["translate_out"]:
export_translation()
sys.exit(0)
if config["translate_in"]:
import_translation()
sys.exit(0)
if not config["stop_after_init"]:
setup_pid_file()
# Some module register themselves when they are loaded so we need the
# services to be running before loading any registry.
if config['workers']:
openerp.service.start_services_workers()
else:
openerp.service.start_services()
if config['db_name']:
for dbname in config['db_name'].split(','):
preload_registry(dbname)
if config["stop_after_init"]:
sys.exit(0)
_logger.info('OpenERP server is running, waiting for connections...')
quit_on_signals()
if __name__ == "__main__":
main()
openerp.cli.main()
# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:

View File

@ -26,6 +26,7 @@
SUPERUSER_ID = 1
import addons
import cli
import conf
import loglevels
import modules

View File

@ -86,14 +86,12 @@ The kernel of OpenERP, needed for all installation.
'security/base_security.xml',
'security/ir.model.access.csv',
'security/ir.model.access-1.csv', # res.partner.address is deprecated; it is still there for backward compability only and will be removed in next version
'res/res_widget_view.xml',
'res/res_widget_data.xml',
],
'demo': [
'base_demo.xml',
'res/res_partner_demo.xml',
'res/res_partner_demo.yml',
'res/res_widget_demo.xml',
'res/res_partner_image_demo.xml',
],
'test': [
'test/base_test.xml',

View File

@ -69,6 +69,7 @@
<field name="name">Administrator</field>
<field name="company_id" ref="main_company"/>
<field name="customer" eval="False"/>
<field name="email">admin@example.com</field>
</record>
<record model="res.users" id="base.user_root">
@ -76,7 +77,8 @@
<field name="company_id" ref="main_company"/>
<field name="company_ids" eval="[(4, ref('main_company'))]"/>
<field name="menu_id" ref="action_menu_admin"/>
<field name="signature">Administrator</field>
<field name="signature">--
Administrator</field>
</record>
<record id="main_partner" model="res.partner">

View File

@ -5,14 +5,169 @@
<field name="name">Demo User</field>
<field name="company_id" ref="main_company"/>
<field name="customer" eval="False"/>
<field name="email">demo@example.com</field>
</record>
<record id="user_demo" model="res.users">
<field name="partner_id" ref="base.partner_demo"/>
<field name="login">demo</field>
<field name="password">demo</field>
<field name="signature">Mr Demo</field>
<field name="signature">--
Mr Demo</field>
<field name="company_id" ref="main_company"/>
<field name="groups_id" eval="[(6,0,[ref('base.group_user')])]"/>
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</record>
<record model="res.partner" id="base.partner_root">
<field name="email">admin@example.com</field>
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AC+TAEhwGCjdx1QFYIKqavLGN19DiFAMe11PdZ6I2Owv8O4VrCHT9qaLo5/ueg+/ZYbpThPZbPQz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</field>
</record>
<!-- new rate for demo transactions in multi currency -->
@ -21,5 +176,6 @@
<field name="currency_id" ref="USD"/>
<field eval="time.strftime('%Y-06-06')" name="name"/>
</record>
</data>
</openerp>

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