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Modified inline handling to allow for an inline formset to be displayed when the foreign key exists on a parent class. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8165 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee 2008-08-01 00:27:40 +00:00
parent b0d1612c9e
commit 83f0d54d41
1 changed files with 9 additions and 2 deletions
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11
django/forms/models.py
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@ -441,13 +441,20 @@ def _get_foreign_key(parent_model, model, fk_name=None):
fks_to_parent = [f for f in opts.fields if f.name == fk_name]
if len(fks_to_parent) == 1:
fk = fks_to_parent[0]
if not isinstance(fk, ForeignKey) or fk.rel.to != parent_model:
if not isinstance(fk, ForeignKey) or \
(fk.rel.to != parent_model and
fk.rel.to not in parent_model._meta.parents.keys()):
raise Exception("fk_name '%s' is not a ForeignKey to %s" % (fk_name, parent_model))
elif len(fks_to_parent) == 0:
raise Exception("%s has no field named '%s'" % (model, fk_name))
else:
# Try to discover what the ForeignKey from model to parent_model is
fks_to_parent = [f for f in opts.fields if isinstance(f, ForeignKey) and f.rel.to == parent_model]
fks_to_parent = [
f for f in opts.fields
if isinstance(f, ForeignKey)
and (f.rel.to == parent_model
or f.rel.to in parent_model._meta.parents.keys())
]
if len(fks_to_parent) == 1:
fk = fks_to_parent[0]
elif len(fks_to_parent) == 0: