[IMP] fields: improve _determine_default() and add test for inherited fields
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@ -69,4 +69,7 @@ class daughter(models.Model):
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# simply redeclare the field without adding any option
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template_id = fields.Many2one()
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# change the default value of an inherited field
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name = fields.Char(default='Baz')
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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@ -17,19 +17,25 @@ class test_inherits(common.TransactionCase):
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def test_field_extension(self):
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""" check the extension of a field in an inherited model """
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# the field mother.name should inherit required=True, and have "Bar" as
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# a default value
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mother = self.env['test.inherit.mother']
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daughter = self.env['test.inherit.daughter']
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# the field mother.name must have required=True and "Bar" as default
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field = mother._fields['name']
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self.assertTrue(field.required)
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self.assertEqual(field.default(mother), "Bar")
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self.assertEqual(mother.default_get(['name']), {'name': "Bar"})
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self.assertEqual(mother._defaults.get('name'), "Bar")
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self.assertEqual(mother.default_get(['name']), {'name': "Bar"})
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# the field daughter.template_id should inherit
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# model_name='test.inherit.mother', string='Template', required=True
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daughter = self.env['test.inherit.daughter']
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# the field daughter.name must have required=False and "Baz" as default
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field = daughter._fields['name']
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self.assertFalse(field.required)
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self.assertEqual(field.default(mother), "Baz")
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self.assertEqual(daughter._defaults.get('name'), "Baz")
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self.assertEqual(daughter.default_get(['name']), {'name': "Baz"})
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# the field daughter.template_id should have
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# comodel_name='test.inherit.mother', string='Template', required=True
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field = daughter._fields['template_id']
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self.assertEqual(field.comodel_name, 'test.inherit.mother')
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self.assertEqual(field.string, "Template")
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@ -347,17 +347,21 @@ class Field(object):
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# traverse the class hierarchy upwards, and take the first field
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# definition with a default or _defaults for self
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for klass in cls.__mro__:
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field = klass.__dict__.get(name, self)
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if name in klass.__dict__:
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field = klass.__dict__[name]
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if not isinstance(field, type(self)):
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return # klass contains another value overridden by self
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# klass contains another value overridden by self
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return
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if 'default' in field._attrs:
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# take the default in field, and adapt it for cls._defaults
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value = field._attrs['default']
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if callable(value):
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from openerp import api
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self.default = value
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cls._defaults[name] = lambda model, cr, uid, context: \
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self.convert_to_write(value(model.browse(cr, uid, [], context)))
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cls._defaults[name] = api.model(
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lambda recs: self.convert_to_write(value(recs))
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)
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else:
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self.default = lambda recs: value
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cls._defaults[name] = value
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@ -367,10 +371,12 @@ class Field(object):
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if name in defaults:
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# take the value from _defaults, and adapt it for self.default
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value = defaults[name]
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value_func = value if callable(value) else lambda *args: value
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if callable(value):
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func = lambda recs: value(recs._model, recs._cr, recs._uid, recs._context)
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else:
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func = lambda recs: value
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self.default = lambda recs: self.convert_to_cache(
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value_func(recs._model, recs._cr, recs._uid, recs._context),
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recs, validate=False,
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func(recs), recs, validate=False,
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)
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cls._defaults[name] = value
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return
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