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Set _default_manager directly on model_cls; don't use add_to_class() 

Using model_cls.add_to_class() calls Manager.contribute_to_class(),
which then sets the attribute to an instance of ManagerDescriptor. In
the case of _default_manager, this behavior differs from Django's, as
_default_manager is set to the manager instance itself, not its
descriptor. This is why it is normally possible to access default_manager
from a model instance.

fixes #96
fix_request_path_info
Frankie Dintino 2015-01-30 14:14:01 -05:00
parent d56d9bfd15
commit a3d9379876
1 changed files with 5 additions and 3 deletions
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8
polymorphic/base.py
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@ -77,15 +77,17 @@ class PolymorphicModelBase(ModelBase):
for source_name, mgr_name, manager in inherited_managers:
#print '** add inherited manager from model %s, manager %s, %s' % (source_name, mgr_name, manager.__class__.__name__)
new_manager = manager._copy_to_model(new_class)
new_class.add_to_class(mgr_name, new_manager)
if mgr_name == '_default_manager':
new_class._default_manager = new_manager
else:
new_class.add_to_class(mgr_name, new_manager)
# get first user defined manager; if there is one, make it the _default_manager
# this value is used by the related objects, restoring access to custom queryset methods on related objects.
user_manager = self.get_first_user_defined_manager(new_class)
if user_manager:
def_mgr = user_manager._copy_to_model(new_class)
#print '## add default manager', type(def_mgr)
new_class.add_to_class('_default_manager', def_mgr)
new_class._default_manager = user_manager._copy_to_model(new_class)
new_class._default_manager._inherited = False # the default mgr was defined by the user, not inherited
# validate resulting default manager