Consider the following setting:
- on model A, field F is computed, stored, and depends on field G
- on model A, field one2many G to model B, with inverse field H
- on model B, field many2one H is inherited (_inherits) from model C
- on model C, field many2one H is stored
When adding records of model B, the field F must be recomputed. In order to
determine which records to recompute, one searches model A with a domain like
[(G, 'in', ids)]. In expression.py, this is resolved with an SQL query like
select H from B where id in {ids}
This query fails, since the field H is not stored in model B. This happens in
general if H is not stored (it may be any computed field). In that case, one
should instead browse records from B, and read field H through the ORM.
A test case has been added: it introduces a many2one field in a parent model,
and a one2many field using the inherited many2one on a child model. The test
checks whether one can search on the one2many field.
This solves a subtle issue: in the following case, the class Bar should
override the default value set by Foo. But in practice it was not working,
because _defaults is looked up before field.default.
class Foo(models.Model):
_name = 'foo'
_columns = {
'foo': fields.char('Foo'),
}
_defaults = {
'foo': "Foo",
}
class Bar(models.Model):
_inherit = 'foo'
foo = fields.Char(default="Bar")
The change makes field.default and the model's _defaults consistent with each
other.
Consider the following example:
class Foo(models.Model):
_name = 'foo'
_columns = {
'state': fields.selection([('a', 'A')]),
}
class Bar(models.Model):
_inherit = 'foo'
state = fields.Selection(selection_add=[('b', 'B')])
The attribute 'column' of the field does not have the full selection list,
therefore the column object cannot not be reused, even a copy of it. The
solution is to systematically recreate the column from the field's final
specification, except for function fields that have no sensible way for being
recreated.
If a selection field is defined by a list as selection, such as:
state = fields.Selection([('a', 'A'), ('b', 'B')])
one can extend it by inheritance by redefining the field, as:
state = fields.Selection(selection_add=[('c', 'C')])
The result is that the selection field will have the list
[('a', 'A'), ('b', 'B'), ('c', 'C')] as selection.
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
Raphael Collet
Xavier Morel