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Code Issues 32 Releases Wiki Activity

Fixed #10251 -- Fixed model inheritance when there's also an explicit pk field.

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@9970 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Malcolm Tredinnick
2009-03-04 07:20:08 +00:00
parent 0e93f60c7f
commit dfd7a6c781
3 changed files with 38 additions and 4 deletions
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15
django/db/models/options.py
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@@ -435,6 +435,21 @@ class Options(object):
result.update(parent._meta.get_parent_list())
return result
def get_ancestor_link(self, ancestor):
"""
Returns the field on the current model which points to the given
"ancestor". This is possible an indirect link (a pointer to a parent
model, which points, eventually, to the ancestor). Used when
constructing table joins for model inheritance.
Returns None if the model isn't an ancestor of this one.
"""
if ancestor in self.parents:
return self.parents[ancestor]
for parent in self.parents:
if parent._meta.get_ancestor_link(ancestor):
return self.parents[parent]
def get_ordered_objects(self):
"Returns a list of Options objects that are ordered with respect to this object."
if not hasattr(self, '_ordered_objects'):