The computed value of parameter digits is no longer stored into fields and
columns; instead the value is recomputed everytime it is needed. Note that
performance is not an issue, since the method `get_precision` of model
'decimal.precision' is cached by the orm. This simplifies the management of
digits on fields and saves about 300Kb per registry.
The mappings model._all_columns takes quite some memory (around 2MB per
registry) because of the numerous dictionaries (one per model) and inefficient
memory storage of column_info. Since it is deprecated and almost no longer
used, it can be computed on demand.
For public-facing HTML content provided by the user,
`<style>` tags and `style` attributes should be stripped
automatically, as they can easily be abused to deface
pages for abusive users and spammers.
<style> tags were already stripped, the optional `strip_style`
for fields.html enables the automatic stripping of style
attributes.
This is opt-in because custom style attributes are still
desirable in trusted HTML fields.
The implementation was based on the ill-defined method `same_parameters()` that
compares arguments based on a heuristic. Instead, we now create a new column
and check whether it is equivalent to `self` by comparing the arguments
returned by `to_field_args()`. If that is the case, `self` is reused instead
of the new column.
The code refactoring also fixes the column reuse which was broken by the
introduction of the parameter `compute` in commit 9333c62. Indeed, with that
parameter, `same_parameters()` always returned False, since old-api columns do
not have that parameter by default. The parameter has been renamed to
`_computed_field`, and is no longer passed for creating columns.
When overriding a field defined as a function field, the field must either
create a corresponding column that is not a fields.function (if stored), or
have no corresponding column (if not stored).
In a workflow context (for instance, in the invoice workflow),
context is not passed.
Therefore, relying on the 'recompute' key being the context
in order to not recompute the fields does not work with Workflows.
It leads to huge performance issues,
as fields are recomputed recursively (instead of sequentially)
when several records are implied.
For instance, when reconciling several invoices with one payment
(100 invoices with 1 payment for instance),
records of each invoice are recomputed uselessly in each workflow call
(for each "confirm_paid" method done for each invoice).
With a significant number of invoices (100, for instance),
it even leads to a "Maximum recursion depth reached" errror.
closes#4905
For models using a datetime field as name (hr.attendance for instance), the user timezone wasn't applied in the display name.
Therefore, in the breadcrumb, the datetime was different than in the form if the user had another timezone than UTC.
The old-api model._all_columns contains information about model._columns and
inherited columns. This dictionary is missing new-api computed non-stored
fields, and the new field objects provide a more readable api...
This commit contains the following changes:
- adapt several methods of BaseModel to use fields instead of columns and
_all_columns
- copy all semantic-free attributes of related fields from their source
- add attribute 'group_operator' on integer and float fields
- base, base_action_rule, crm, edi, hr, mail, mass_mailing, pad,
payment_acquirer, share, website, website_crm, website_mail: simply use
_fields instead of _all_columns
- base, decimal_precision, website: adapt qweb rendering methods to use fields
instead of columns
Clarify the semantics of field attributes:
- field.store is True when the field is actually stored in the database;
- field.column is the column corresponding to field or None.
The various field definitions correspond to:
- new-style stored field: field.store and field.column
- new-style non-stored field: not field.store and not field.column
- old-style regular field: field.store and field.column
- old-style function field: not field.store and field.column
This is a memory optimization: instead of setting all attributes on all
instances, set them with their default value on the class, and only set
specific ones on instances. This reduces the memory footprint of around 14Mb
per registry with modules crm, sale, purchase and stock installed.
This is a memory optimization: it reduces the memory footprint of each
registry. We have observed a reduction of 10Mb on a database with modules crm,
sale, purchase, stock.
This fixes issue #2146. The inverse of a one2many field can be an inherited
field (_inherits). In that case, we cannot read its value with a simple
database query. Instead, we let the related field read it, but for performance
considerations we disable the prefetching of other fields.
When reading a one2many field, the inverse mapping of the lines (matching m2o -> lines of corresponding record) was instantiating each line and then triggering the prefect of fields.
To improve the performances, the inverse mapping is done in sql to avoid triggering the prefetching.
When the context contains 'recompute': False, the recomputation was not even
prepared. Now both create() and write() prepare the recomputation by invoking
method modified(). The flag only controls whether method recompute() is invoked.
In addintion, the former flag 'no_store_function' was converted to the flag
'recompute', so that both create() and write() use the same flag.
Fixes#1456
In combination with f28be81, this should help speed up
initialization of new boolean columns. psycopg2 handles
bool parameters values just fine inside cr.mogrify()
A squashed merge is required as the conversion of the apiculture branch from
bzr to git was not correctly done. The git history contains irrelevant blobs
and commits. This branch brings a lot of changes and fixes, too many to list
exhaustively.
- New orm api, objects are now used instead of ids
- Environements to encapsulates cr uid context while maintaining backward compatibility
- Field compute attribute is a new object oriented way to define function fields
- Shared browse record cache
- New onchange protocol
- Optional copy flag on fields
- Documentation update
- Dead code cleanup
- Lots of fixes
fixes#595
In the case where a property for the company exists but has no related record (e.g. in case of type m2o with no defined value), not setting a value to this field for a new record would create a new property (as browse_null is not an instance of browse_record)
In t-field, datetime fields (formatted and not formatted versions) are
converted to the context/user's timezone (through
fields.datetime.context_timestamp) when displayed, but were saved without
converting back so the next display would go forward (or back) of the user's
tzoffset.
Fix that by applying context_timestamp's conversion backwards, from the
context/user's timezone back to UTC, before saving the field's value.
_read_flat: remove duplicated fields in read call
get many2one: as False is instance of int, check the value of x first to avoid calling a name_get with a list of False
When we were reading twice a m2o field where at least one result is null, the first call to name_get would set the value to False instead of None and then accepted by the filter 'isinstance(x, (int,long))'
Raphael Collet
Olivier Dony
Denis Ledoux
Martin Trigaux
Christophe Simonis
Martin Ambroz
Samus CTO
Alexandre Fayolle
Xavier Morel