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Refs #24354 -- Prevented repointing of relations on superclasses when migrating a subclass's name change

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The issue was hidden on 1.8+ until #24573 due to a bug inside the model
reloading process.

Forwardport of patch from ae87ad005f
This commit is contained in:
Matthew Wilkes 2015-02-16 19:42:11 +00:00 • committed by Markus Holtermann
parent 1a1f16d67d
commit e4b7daec11
1 changed files with 4 additions and 0 deletions
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4
django/db/migrations/operations/models.py
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@ -169,6 +169,10 @@ class RenameModel(Operation):
state.remove_model(app_label, self.old_name_lower) state.remove_model(app_label, self.old_name_lower)
# Repoint the FKs and M2Ms pointing to us # Repoint the FKs and M2Ms pointing to us
for related_object in all_related_objects: for related_object in all_related_objects:
if related_object.model is not model:
# The model being renamed does not participate in this relation
# directly. Rather, a superclass does.
continue
# Use the new related key for self referential related objects. # Use the new related key for self referential related objects.
if related_object.related_model == model: if related_object.related_model == model:
related_key = (app_label, self.new_name_lower) related_key = (app_label, self.new_name_lower)