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Brush up the `ParentAdminNotRegistered` fix a bit for flow clarity.

fix_request_path_info
Diederik van der Boor 2016-10-14 11:48:22 +02:00
parent 3570d10754
commit 58f89efa5d
2 changed files with 9 additions and 11 deletions
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1
docs/changelog.rst
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@ -10,6 +10,7 @@ Changes in git
* Fixed ``polymorphic_modelformset_factory()`` usage.
* Fixed Python 3 bug for inline formsets.
* Fixed CSS for Grappelli, so model choice menu properly overlaps.
* Fixed ``ParentAdminNotRegistered`` exception for models that are registered via a proxy model instead of the real base model.
Version 1.0.1 (2016-09-11)

17
polymorphic/admin/childadmin.py
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@ -126,20 +126,17 @@ class PolymorphicChildModelAdmin(admin.ModelAdmin):
try:
return self.admin_site._registry[parent_model]
except KeyError:
# Admin is not registered for polymorphic_ctype model, but it may
# be registered for a model in the class ancestry between this
# model and the root parent one.
# Admin is not registered for polymorphic_ctype model, but perhaps it's registered
# for a intermediate proxy model, between the parent_model and this model.
for klass in inspect.getmro(self.model):
# Ignore model ancestors that are not also subclasses of the
# target ctype model
if not issubclass(klass, parent_model):
continue
# Fetch admin instance for model class (may return None)
continue # e.g. found a mixin.
# Fetch admin instance for model class, see if it's a possible candidate.
model_admin = self.admin_site._registry.get(klass)
# Ignore admin (or None) that isn't a polymorphic parent admin
if not isinstance(model_admin, PolymorphicParentModelAdmin):
continue
if model_admin is not None and isinstance(model_admin, PolymorphicParentModelAdmin):
return model_admin # Success!
# If we get this far without returning there is no admin available
raise ParentAdminNotRegistered("No parent admin was registered for a '{0}' model.".format(parent_model))