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[1.7.x] Fixed #22563: Ignore AUTH_USER_MODEL errors in from_state

This commit is contained in:
Andrew Godwin 2014-05-08 21:33:24 -07:00
parent d2e96b5792
commit 4535dedc42
2 changed files with 5 additions and 13 deletions
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2
django/db/migrations/autodetector.py
View File

@ -50,7 +50,7 @@ class MigrationAutodetector(object):
"""
# We'll store migrations as lists by app names for now
self.migrations = {}
old_apps = self.from_state.render()
old_apps = self.from_state.render(ignore_swappable=True)
new_apps = self.to_state.render()
# Prepare lists of old/new model keys that we care about
# (i.e. ignoring proxy ones and unmigrated ones)

16
django/db/migrations/state.py
View File

@ -38,7 +38,7 @@ class ProjectState(object):
real_apps=self.real_apps,
)
def render(self, include_real=None):
def render(self, include_real=None, ignore_swappable=False):
"Turns the project state into actual models in a new Apps"
if self.apps is None:
# Any apps in self.real_apps should have all their models included
@ -75,23 +75,15 @@ class ProjectState(object):
try:
model = self.apps.get_model(lookup_model[0], lookup_model[1])
except LookupError:
# If the lookup failed to something that looks like AUTH_USER_MODEL,
# give a better error message about how you can't change it (#22563)
extra_message = ""
if "%s.%s" % (lookup_model[0], lookup_model[1]) == settings.AUTH_USER_MODEL:
extra_message = (
"\nThe missing model matches AUTH_USER_MODEL; if you've changed the value of this" +
"\nsetting after making a migration, be aware that this is not supported. If you" +
"\nchange AUTH_USER_MODEL you must delete and recreate migrations for its app."
)
if "%s.%s" % (lookup_model[0], lookup_model[1]) == settings.AUTH_USER_MODEL and ignore_swappable:
continue
# Raise an error with a best-effort helpful message
# (only for the first issue). Error message should look like:
# "ValueError: Lookup failed for model referenced by
# field migrations.Book.author: migrations.Author"
raise ValueError("Lookup failed for model referenced by field {field}: {model[0]}.{model[1]}{extra_message}".format(
raise ValueError("Lookup failed for model referenced by field {field}: {model[0]}.{model[1]}".format(
field=operations[0][1],
model=lookup_model,
extra_message=extra_message,
))
else:
do_pending_lookups(model)