odoo/openerp/addons/base/ir/ir_qweb.py

851 lines
31 KiB
Python

# -*- coding: utf-8 -*-
import collections
import cStringIO
import datetime
import json
import logging
import math
import re
import xml # FIXME use lxml and etree
import babel
import babel.dates
import werkzeug.utils
from PIL import Image
import openerp.tools
from openerp.tools.safe_eval import safe_eval as eval
from openerp.osv import osv, orm, fields
from openerp.tools.translate import _
_logger = logging.getLogger(__name__)
class QWebException(Exception):
def __init__(self, message, template=None, node=None, attribute=None):
self.message = message
self.template = template
self.node = node
self.attribute = attribute
class QWebContext(dict):
def __init__(self, cr, uid, data, loader=None, templates=None, context=None):
self.cr = cr
self.uid = uid
self.loader = loader
self.templates = templates or {}
self.context = context
dic = dict(data)
super(QWebContext, self).__init__(dic)
self['defined'] = lambda key: key in self
def safe_eval(self, expr):
locals_dict = collections.defaultdict(lambda: None)
locals_dict.update(self)
locals_dict.pop('cr', None)
locals_dict.pop('loader', None)
return eval(expr, None, locals_dict, nocopy=True, locals_builtins=True)
def copy(self):
return QWebContext(self.cr, self.uid, dict.copy(self),
loader=self.loader,
templates=self.templates,
context=self.context)
def __copy__(self):
return self.copy()
class QWeb(orm.AbstractModel):
"""QWeb Xml templating engine
The templating engine use a very simple syntax, "magic" xml attributes, to
produce any kind of texutal output (even non-xml).
QWebXml:
the template engine core implements the basic magic attributes:
t-att t-raw t-esc t-if t-foreach t-set t-call t-trim
- loader: function that return a template
QWeb rendering can be used for many tasks. As a result, customizations
made by one task context (to either the main qweb rendering or to specific
fields rendering) could break other tasks.
To avoid that, ``ir.qweb`` was consciously made inheritable and the "root"
of an object hierarchy. If you need extensions or alterations which could
be incompatible with other subsystems, you should create a local object
inheriting from ``ir.qweb`` and customize that.
If you need to customize t-fields rendering, subclass the ir.qweb.field
model (and its sub-models) then override :meth:`~.get_converter_for` to
fetch the right field converters for your qweb model.
"""
_name = 'ir.qweb'
node = xml.dom.Node
_void_elements = frozenset([
'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'keygen',
'link', 'menuitem', 'meta', 'param', 'source', 'track', 'wbr'])
_format_regex = re.compile(
'(?:'
# ruby-style pattern
'#\{(.+?)\}'
')|(?:'
# jinja-style pattern
'\{\{(.+?)\}\}'
')')
def __init__(self, pool, cr):
super(QWeb, self).__init__(pool, cr)
self._render_tag = self.prefixed_methods('render_tag_')
self._render_att = self.prefixed_methods('render_att_')
def prefixed_methods(self, prefix):
""" Extracts all methods prefixed by ``prefix``, and returns a mapping
of (t-name, method) where the t-name is the method name with prefix
removed and underscore converted to dashes
:param str prefix:
:return: dict
"""
return dict(
(name[len(prefix):].replace('_', '-'), getattr(type(self), name))
for name in dir(self)
if name.startswith(prefix))
def register_tag(self, tag, func):
self._render_tag[tag] = func
def load_document(self, x, into, context):
"""
Loads an XML document and installs any contained template in the engine
"""
if hasattr(x, 'documentElement'):
dom = x
elif x.startswith("<?xml"):
dom = xml.dom.minidom.parseString(x)
else:
dom = xml.dom.minidom.parse(x)
for n in dom.documentElement.childNodes:
if n.nodeType == self.node.ELEMENT_NODE and n.getAttribute('t-name'):
self.add_template(into, str(n.getAttribute("t-name")), n, context)
def add_template(self, into, name, node, context):
into[name] = node
def get_template(self, name, context):
if context.loader and name not in context.templates:
xml_doc = context.loader(name)
self.load_document(xml_doc, into=context.templates, context=context)
if name in context.templates:
return context.templates[name]
e = KeyError('qweb: template "%s" not found' % name)
setattr(e, 'qweb_template', name)
raise e
def eval(self, expr, v):
try:
return v.safe_eval(expr)
except Exception, e:
# add qweb metdata on exception
setattr(e, 'qweb_eval', expr)
setattr(e, 'qweb_template', v.get('__template__'))
raise
def eval_object(self, expr, v):
return self.eval(expr, v)
def eval_str(self, expr, v):
if expr == "0":
return v.get(0, '')
val = self.eval(expr, v)
if isinstance(val, unicode):
return val.encode("utf8")
return str(val)
def eval_format(self, expr, v):
expr, replacements = self._format_regex.subn(
lambda m: self.eval_str(m.group(1) or m.group(2), v),
expr)
if replacements:
return expr
try:
return str(expr % v)
except:
raise Exception("QWeb: format error '%s' " % expr)
def eval_bool(self, expr, v):
val = self.eval(expr, v)
if val:
return 1
else:
return 0
@openerp.tools.ormcache()
def get_template_xmlid(self, cr, uid, id):
imd = self.pool['ir.model.data']
domain = [('model', '=', 'ir.ui.view'), ('res_id', '=', id)]
xmlid = imd.search_read(cr, uid, domain, ['module', 'name'])[0]
return '%s.%s' % (xmlid['module'], xmlid['name'])
def render(self, cr, uid, id_or_xml_id, v=None, loader=None, context=None):
if isinstance(id_or_xml_id, list):
id_or_xml_id = id_or_xml_id[0]
tname = id_or_xml_id
if isinstance(id_or_xml_id, (int, long)):
tname = self.get_template_xmlid(cr, uid, tname)
if v is None:
v = {}
if not isinstance(v, QWebContext):
v = QWebContext(cr, uid, v, loader=loader, context=context)
v['__template__'] = tname
stack = v.get('__stack__', [])
if stack:
v['__caller__'] = stack[-1]
stack.append(tname)
v['__stack__'] = stack
v['xmlid'] = str(stack[0]) # Temporary fix
return self.render_node(self.get_template(tname, v), v)
def render_node(self, e, v):
r = ""
if e.nodeType == self.node.TEXT_NODE or e.nodeType == self.node.CDATA_SECTION_NODE:
r = e.data.encode("utf8")
elif e.nodeType == self.node.ELEMENT_NODE:
g_att = ""
t_render = None
t_att = {}
for (an, av) in e.attributes.items():
an = str(an)
if an == "groups":
can_see = self.user_has_groups(v['request'].cr, v['uid'], groups=av)
if not can_see:
return ''
continue
if isinstance(av, unicode):
av = av.encode("utf8")
else:
av = av.nodeValue.encode("utf8")
if an.startswith("t-"):
for i in self._render_att:
if an[2:].startswith(i):
g_att += self._render_att[i](self, e, an, av, v)
break
else:
if an[2:] in self._render_tag:
t_render = an[2:]
t_att[an[2:]] = av
else:
g_att += ' %s="%s"' % (an, werkzeug.utils.escape(av))
if 'debug' in t_att:
debugger = t_att.get('debug', 'pdb')
__import__(debugger).set_trace() # pdb, ipdb, pudb, ...
if t_render:
r = self._render_tag[t_render](self, e, t_att, g_att, v)
else:
r = self.render_element(e, t_att, g_att, v)
if isinstance(r, unicode):
return r.encode('utf-8')
return r
def render_element(self, e, t_att, g_att, v, inner=None):
# e: element
# t_att: t-* attributes
# g_att: generated attributes
# v: values
# inner: optional innerXml
if inner:
g_inner = inner
else:
g_inner = []
for n in e.childNodes:
try:
g_inner.append(self.render_node(n, v))
except Exception, ex:
# add qweb metdata on exception
if not getattr(ex, 'qweb_template', None):
setattr(e, 'qweb_template', v.get('__template__'))
if not getattr(ex, 'qweb_node', None):
setattr(ex, 'qweb_node', e)
raise
name = str(e.nodeName)
inner = "".join(g_inner)
trim = t_att.get("trim", 0)
if trim == 0:
pass
elif trim == 'left':
inner = inner.lstrip()
elif trim == 'right':
inner = inner.rstrip()
elif trim == 'both':
inner = inner.strip()
if name == "t":
return inner
elif len(inner) or name not in self._void_elements:
return "<%s%s>%s</%s>" % tuple(
v if isinstance(v, str) else v.encode('utf-8')
for v in (name, g_att, inner, name))
else:
return "<%s%s/>" % (name, g_att)
# Attributes
def render_att_att(self, e, an, av, v):
if an.startswith("t-attf-"):
att, val = an[7:], self.eval_format(av, v)
elif an.startswith("t-att-"):
att, val = an[6:], self.eval(av, v)
if isinstance(val, unicode):
val = val.encode("utf8")
else:
att, val = self.eval_object(av, v)
return val and ' %s="%s"' % (att, werkzeug.utils.escape(val)) or " "
def render_att_href(self, e, an, av, v):
return self.url_for(e, an, av, v)
def render_att_src(self, e, an, av, v):
return self.url_for(e, an, av, v)
def render_att_action(self, e, an, av, v):
return self.url_for(e, an, av, v)
def url_for(self, e, an, av, v):
if 'url_for' not in v:
raise KeyError("qweb: no 'url_for' found in context")
# Temporary implementation of t-keep-query until qweb py v2
keep_query = e.attributes.get('t-keep-query')
if keep_query:
params = self.eval_format(keep_query.value, v)
keep_query = [q.strip() for q in params.split(',')]
path = str(v['url_for'](self.eval_format(av, v), keep_query=keep_query))
return ' %s="%s"' % (an[2:], werkzeug.utils.escape(path))
# Tags
def render_tag_raw(self, e, t_att, g_att, v):
inner = self.eval_str(t_att["raw"], v)
return self.render_element(e, t_att, g_att, v, inner)
def render_tag_esc(self, e, t_att, g_att, v):
inner = werkzeug.utils.escape(self.eval_str(t_att["esc"], v))
return self.render_element(e, t_att, g_att, v, inner)
def render_tag_foreach(self, e, t_att, g_att, v):
expr = t_att["foreach"]
enum = self.eval_object(expr, v)
if enum is not None:
var = t_att.get('as', expr).replace('.', '_')
d = v.copy()
size = -1
if isinstance(enum, (list, tuple)):
size = len(enum)
elif hasattr(enum, 'count'):
size = enum.count()
d["%s_size" % var] = size
d["%s_all" % var] = enum
index = 0
ru = []
for i in enum:
d["%s_value" % var] = i
d["%s_index" % var] = index
d["%s_first" % var] = index == 0
d["%s_even" % var] = index % 2
d["%s_odd" % var] = (index + 1) % 2
d["%s_last" % var] = index + 1 == size
if index % 2:
d["%s_parity" % var] = 'odd'
else:
d["%s_parity" % var] = 'even'
if 'as' in t_att:
d[var] = i
elif isinstance(i, dict):
d.update(i)
ru.append(self.render_element(e, t_att, g_att, d))
index += 1
return "".join(ru)
else:
template = v.get('__template__')
e = NameError("QWeb: foreach enumerator %r is not defined while rendering template %r" % (expr, template))
e.qweb_template = template
raise e
def render_tag_if(self, e, t_att, g_att, v):
if self.eval_bool(t_att["if"], v):
return self.render_element(e, t_att, g_att, v)
else:
return ""
def render_tag_call(self, e, t_att, g_att, v):
d = v if 'import' in t_att else v.copy()
d[0] = self.render_element(e, t_att, g_att, d)
return self.render(None, None, self.eval_format(t_att["call"], d), d)
def render_tag_set(self, e, t_att, g_att, v):
if "value" in t_att:
v[t_att["set"]] = self.eval_object(t_att["value"], v)
elif "valuef" in t_att:
v[t_att["set"]] = self.eval_format(t_att["valuef"], v)
else:
v[t_att["set"]] = self.render_element(e, t_att, g_att, v)
return ""
def render_tag_field(self, e, t_att, g_att, v):
""" eg: <span t-record="browse_record(res.partner, 1)" t-field="phone">+1 555 555 8069</span>"""
node_name = e.nodeName
assert node_name not in ("table", "tbody", "thead", "tfoot", "tr", "td",
"li", "ul", "ol", "dl", "dt", "dd"),\
"RTE widgets do not work correctly on %r elements" % node_name
assert node_name != 't',\
"t-field can not be used on a t element, provide an actual HTML node"
record, field_name = t_att["field"].rsplit('.', 1)
record = self.eval_object(record, v)
column = record._model._all_columns[field_name].column
options = json.loads(t_att.get('field-options') or '{}')
field_type = get_field_type(column, options)
converter = self.get_converter_for(field_type)
return converter.to_html(v.cr, v.uid, field_name, record, options,
e, t_att, g_att, v, context=v.context)
def get_converter_for(self, field_type):
return self.pool.get('ir.qweb.field.' + field_type,
self.pool['ir.qweb.field'])
class FieldConverter(osv.AbstractModel):
""" Used to convert a t-field specification into an output HTML field.
:meth:`~.to_html` is the entry point of this conversion from QWeb, it:
* converts the record value to html using :meth:`~.record_to_html`
* generates the metadata attributes (``data-oe-``) to set on the root
result node
* generates the root result node itself through :meth:`~.render_element`
"""
_name = 'ir.qweb.field'
def attributes(self, cr, uid, field_name, record, options,
source_element, g_att, t_att, qweb_context,
context=None):
"""
Generates the metadata attributes (prefixed by ``data-oe-`` for the
root node of the field conversion. Attribute values are escaped by the
parent using ``werkzeug.utils.escape``.
The default attributes are:
* ``model``, the name of the record's model
* ``id`` the id of the record to which the field belongs
* ``field`` the name of the converted field
* ``type`` the logical field type (widget, may not match the column's
``type``, may not be any _column subclass name)
* ``translate``, a boolean flag (``0`` or ``1``) denoting whether the
column is translatable
* ``expression``, the original expression
:returns: iterable of (attribute name, attribute value) pairs.
"""
column = record._model._all_columns[field_name].column
field_type = get_field_type(column, options)
return [
('data-oe-model', record._model._name),
('data-oe-id', record.id),
('data-oe-field', field_name),
('data-oe-type', field_type),
('data-oe-expression', t_att['field']),
]
def value_to_html(self, cr, uid, value, column, options=None, context=None):
""" Converts a single value to its HTML version/output
"""
if not value: return ''
return value
def record_to_html(self, cr, uid, field_name, record, column, options=None, context=None):
""" Converts the specified field of the browse_record ``record`` to
HTML
"""
return self.value_to_html(
cr, uid, record[field_name], column, options=options, context=context)
def to_html(self, cr, uid, field_name, record, options,
source_element, t_att, g_att, qweb_context, context=None):
""" Converts a ``t-field`` to its HTML output. A ``t-field`` may be
extended by a ``t-field-options``, which is a JSON-serialized mapping
of configuration values.
A default configuration key is ``widget`` which can override the
field's own ``_type``.
"""
content = None
try:
content = self.record_to_html(
cr, uid, field_name, record,
record._model._all_columns[field_name].column,
options, context=context)
if options.get('html-escape', True):
content = werkzeug.utils.escape(content)
elif hasattr(content, '__html__'):
content = content.__html__()
except Exception:
_logger.warning("Could not get field %s for model %s",
field_name, record._model._name, exc_info=True)
g_att += ''.join(
' %s="%s"' % (name, werkzeug.utils.escape(value))
for name, value in self.attributes(
cr, uid, field_name, record, options,
source_element, g_att, t_att, qweb_context)
)
return self.render_element(cr, uid, source_element, t_att, g_att,
qweb_context, content)
def qweb_object(self):
return self.pool['ir.qweb']
def render_element(self, cr, uid, source_element, t_att, g_att,
qweb_context, content):
""" Final rendering hook, by default just calls ir.qweb's ``render_element``
"""
return self.qweb_object().render_element(
source_element, t_att, g_att, qweb_context, content or '')
def user_lang(self, cr, uid, context):
"""
Fetches the res.lang object corresponding to the language code stored
in the user's context. Fallbacks to en_US if no lang is present in the
context *or the language code is not valid*.
:returns: res.lang browse_record
"""
if context is None: context = {}
lang_code = context.get('lang') or 'en_US'
Lang = self.pool['res.lang']
lang_ids = Lang.search(cr, uid, [('code', '=', lang_code)], context=context) \
or Lang.search(cr, uid, [('code', '=', 'en_US')], context=context)
return Lang.browse(cr, uid, lang_ids[0], context=context)
class FloatConverter(osv.AbstractModel):
_name = 'ir.qweb.field.float'
_inherit = 'ir.qweb.field'
def precision(self, cr, uid, column, options=None, context=None):
_, precision = column.digits or (None, None)
return precision
def value_to_html(self, cr, uid, value, column, options=None, context=None):
if context is None:
context = {}
precision = self.precision(cr, uid, column, options=options, context=context)
fmt = '%f' if precision is None else '%.{precision}f'
lang_code = context.get('lang') or 'en_US'
lang = self.pool['res.lang']
formatted = lang.format(cr, uid, [lang_code], fmt.format(precision=precision), value, grouping=True)
# %f does not strip trailing zeroes. %g does but its precision causes
# it to switch to scientific notation starting at a million *and* to
# strip decimals. So use %f and if no precision was specified manually
# strip trailing 0.
if not precision:
formatted = re.sub(r'(?:(0|\d+?)0+)$', r'\1', formatted)
return formatted
class DateConverter(osv.AbstractModel):
_name = 'ir.qweb.field.date'
_inherit = 'ir.qweb.field'
def value_to_html(self, cr, uid, value, column, options=None, context=None):
if not value: return ''
lang = self.user_lang(cr, uid, context=context)
locale = babel.Locale.parse(lang.code)
if isinstance(value, basestring):
value = datetime.datetime.strptime(
value, openerp.tools.DEFAULT_SERVER_DATE_FORMAT)
if options and 'format' in options:
pattern = options['format']
else:
strftime_pattern = lang.date_format
pattern = openerp.tools.posix_to_ldml(strftime_pattern, locale=locale)
return babel.dates.format_datetime(
value, format=pattern,
locale=locale)
class DateTimeConverter(osv.AbstractModel):
_name = 'ir.qweb.field.datetime'
_inherit = 'ir.qweb.field'
def value_to_html(self, cr, uid, value, column, options=None, context=None):
if not value: return ''
lang = self.user_lang(cr, uid, context=context)
locale = babel.Locale.parse(lang.code)
if isinstance(value, basestring):
value = datetime.datetime.strptime(
value, openerp.tools.DEFAULT_SERVER_DATETIME_FORMAT)
value = column.context_timestamp(
cr, uid, timestamp=value, context=context)
if options and 'format' in options:
pattern = options['format']
else:
strftime_pattern = (u"%s %s" % (lang.date_format, lang.time_format))
pattern = openerp.tools.posix_to_ldml(strftime_pattern, locale=locale)
return babel.dates.format_datetime(value, format=pattern, locale=locale)
class TextConverter(osv.AbstractModel):
_name = 'ir.qweb.field.text'
_inherit = 'ir.qweb.field'
def value_to_html(self, cr, uid, value, column, options=None, context=None):
"""
Escapes the value and converts newlines to br. This is bullshit.
"""
if not value: return ''
return nl2br(value, options=options)
class SelectionConverter(osv.AbstractModel):
_name = 'ir.qweb.field.selection'
_inherit = 'ir.qweb.field'
def record_to_html(self, cr, uid, field_name, record, column, options=None, context=None):
value = record[field_name]
if not value: return ''
selection = dict(fields.selection.reify(
cr, uid, record._model, column))
return self.value_to_html(
cr, uid, selection[value], column, options=options)
class ManyToOneConverter(osv.AbstractModel):
_name = 'ir.qweb.field.many2one'
_inherit = 'ir.qweb.field'
def record_to_html(self, cr, uid, field_name, record, column, options=None, context=None):
[read] = record.read([field_name])
_, value = read[field_name]
return nl2br(value, options=options)
class HTMLConverter(osv.AbstractModel):
_name = 'ir.qweb.field.html'
_inherit = 'ir.qweb.field'
def value_to_html(self, cr, uid, value, column, options=None, context=None):
return HTMLSafe(value or '')
class ImageConverter(osv.AbstractModel):
""" ``image`` widget rendering, inserts a data:uri-using image tag in the
document. May be overridden by e.g. the website module to generate links
instead.
.. todo:: what happens if different output need different converters? e.g.
reports may need embedded images or FS links whereas website
needs website-aware
"""
_name = 'ir.qweb.field.image'
_inherit = 'ir.qweb.field'
def value_to_html(self, cr, uid, value, column, options=None, context=None):
try:
image = Image.open(cStringIO.StringIO(value.decode('base64')))
image.verify()
except IOError:
raise ValueError("Non-image binary fields can not be converted to HTML")
except: # image.verify() throws "suitable exceptions", I have no idea what they are
raise ValueError("Invalid image content")
return HTMLSafe('<img src="data:%s;base64,%s">' % (Image.MIME[image.format], value))
class MonetaryConverter(osv.AbstractModel):
""" ``monetary`` converter, has a mandatory option
``display_currency``.
The currency is used for formatting *and rounding* of the float value. It
is assumed that the linked res_currency has a non-empty rounding value and
res.currency's ``round`` method is used to perform rounding.
.. note:: the monetary converter internally adds the qweb context to its
options mapping, so that the context is available to callees.
It's set under the ``_qweb_context`` key.
"""
_name = 'ir.qweb.field.monetary'
_inherit = 'ir.qweb.field'
def to_html(self, cr, uid, field_name, record, options,
source_element, t_att, g_att, qweb_context, context=None):
options['_qweb_context'] = qweb_context
return super(MonetaryConverter, self).to_html(
cr, uid, field_name, record, options,
source_element, t_att, g_att, qweb_context, context=context)
def record_to_html(self, cr, uid, field_name, record, column, options, context=None):
if context is None:
context = {}
Currency = self.pool['res.currency']
display = self.display_currency(cr, uid, options)
# lang.format mandates a sprintf-style format. These formats are non-
# minimal (they have a default fixed precision instead), and
# lang.format will not set one by default. currency.round will not
# provide one either. So we need to generate a precision value
# (integer > 0) from the currency's rounding (a float generally < 1.0).
#
# The log10 of the rounding should be the number of digits involved if
# negative, if positive clamp to 0 digits and call it a day.
# nb: int() ~ floor(), we want nearest rounding instead
precision = int(round(math.log10(display.rounding)))
fmt = "%.{0}f".format(-precision if precision < 0 else 0)
lang_code = context.get('lang') or 'en_US'
lang = self.pool['res.lang']
formatted_amount = lang.format(cr, uid, [lang_code],
fmt, Currency.round(cr, uid, display, record[field_name]),
grouping=True, monetary=True)
pre = post = u''
if display.position == 'before':
pre = u'{symbol} '
else:
post = u' {symbol}'
return HTMLSafe(u'{pre}<span class="oe_currency_value">{0}</span>{post}'.format(
formatted_amount,
pre=pre, post=post,
).format(
symbol=display.symbol,
))
def display_currency(self, cr, uid, options):
return self.qweb_object().eval_object(
options['display_currency'], options['_qweb_context'])
TIMEDELTA_UNITS = (
('year', 3600 * 24 * 365),
('month', 3600 * 24 * 30),
('week', 3600 * 24 * 7),
('day', 3600 * 24),
('hour', 3600),
('minute', 60),
('second', 1)
)
class DurationConverter(osv.AbstractModel):
""" ``duration`` converter, to display integral or fractional values as
human-readable time spans (e.g. 1.5 as "1 hour 30 minutes").
Can be used on any numerical field.
Has a mandatory option ``unit`` which can be one of ``second``, ``minute``,
``hour``, ``day``, ``week`` or ``year``, used to interpret the numerical
field value before converting it.
Sub-second values will be ignored.
"""
_name = 'ir.qweb.field.duration'
_inherit = 'ir.qweb.field'
def value_to_html(self, cr, uid, value, column, options=None, context=None):
units = dict(TIMEDELTA_UNITS)
if value < 0:
raise ValueError(_("Durations can't be negative"))
if not options or options.get('unit') not in units:
raise ValueError(_("A unit must be provided to duration widgets"))
locale = babel.Locale.parse(
self.user_lang(cr, uid, context=context).code)
factor = units[options['unit']]
sections = []
r = value * factor
for unit, secs_per_unit in TIMEDELTA_UNITS:
v, r = divmod(r, secs_per_unit)
if not v: continue
section = babel.dates.format_timedelta(
v*secs_per_unit, threshold=1, locale=locale)
if section:
sections.append(section)
return u' '.join(sections)
class RelativeDatetimeConverter(osv.AbstractModel):
_name = 'ir.qweb.field.relative'
_inherit = 'ir.qweb.field'
def value_to_html(self, cr, uid, value, column, options=None, context=None):
parse_format = openerp.tools.DEFAULT_SERVER_DATETIME_FORMAT
locale = babel.Locale.parse(
self.user_lang(cr, uid, context=context).code)
if isinstance(value, basestring):
value = datetime.datetime.strptime(value, parse_format)
# value should be a naive datetime in UTC. So is fields.datetime.now()
reference = datetime.datetime.strptime(column.now(), parse_format)
return babel.dates.format_timedelta(
value - reference, add_direction=True, locale=locale)
class HTMLSafe(object):
""" HTMLSafe string wrapper, Werkzeug's escape() has special handling for
objects with a ``__html__`` methods but AFAIK does not provide any such
object.
Wrapping a string in HTML will prevent its escaping
"""
__slots__ = ['string']
def __init__(self, string):
self.string = string
def __html__(self):
return self.string
def __str__(self):
s = self.string
if isinstance(s, unicode):
return s.encode('utf-8')
return s
def __unicode__(self):
s = self.string
if isinstance(s, str):
return s.decode('utf-8')
return s
def nl2br(string, options=None):
""" Converts newlines to HTML linebreaks in ``string``. Automatically
escapes content unless options['html-escape'] is set to False, and returns
the result wrapped in an HTMLSafe object.
:param str string:
:param dict options:
:rtype: HTMLSafe
"""
if options is None: options = {}
if options.get('html-escape', True):
string = werkzeug.utils.escape(string)
return HTMLSafe(string.replace('\n', '<br>\n'))
def get_field_type(column, options):
""" Gets a t-field's effective type from the field's column and its options
"""
return options.get('widget', column._type)
# vim:et: