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[1.7.x] Fixed #22319 -- Fixed migration external dependencies when there are internal dependencies. 

Backport of 0fd51cf0bd from master
This commit is contained in:
Loic Bistuer 2014-03-26 03:51:15 +08:00 committed by Tim Graham
parent bdec848063
commit 8e73d3a2c1
2 changed files with 13 additions and 12 deletions
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23
django/db/migrations/autodetector.py
View File

@ -134,6 +134,7 @@ class MigrationAutodetector(object):
bases=model_state.bases,
)
)
# Phase 2 is progressively adding pending models, splitting up into two
# migrations if required.
pending_new_fks = []
@ -161,14 +162,6 @@ class MigrationAutodetector(object):
# migration for safety.
new=any((al, mn) in added_phase_2 for f, al, mn in related_fields),
)
for field_name, other_app_label, other_model_name in related_fields:
# If it depends on a swappable something, add a dynamic depend'cy
swappable_setting = new_apps.get_model(app_label, model_name)._meta.get_field_by_name(field_name)[0].swappable_setting
if swappable_setting is not None:
self.add_swappable_dependency(app_label, swappable_setting)
elif app_label != other_app_label:
self.add_dependency(app_label, other_app_label)
del pending_add[app_label, model_name]
added_phase_2.add((app_label, model_name))
# Ah well, we'll need to split one. Pick deterministically.
else:
@ -194,8 +187,16 @@ class MigrationAutodetector(object):
# Add the bad fields to be made in a phase 3
for field_name, (other_app_label, other_model_name) in bad_fields.items():
pending_new_fks.append((app_label, model_name, field_name, other_app_label))
del pending_add[app_label, model_name]
# Phase 3 is adding the final set of FKs as separate new migrations
for field_name, other_app_label, other_model_name in related_fields:
# If it depends on a swappable something, add a dynamic depend'cy
swappable_setting = new_apps.get_model(app_label, model_name)._meta.get_field_by_name(field_name)[0].swappable_setting
if swappable_setting is not None:
self.add_swappable_dependency(app_label, swappable_setting)
elif app_label != other_app_label:
self.add_dependency(app_label, other_app_label)
del pending_add[app_label, model_name]
# Phase 3 is adding the final set of FKs as separate new migrations.
for app_label, model_name, field_name, other_app_label in pending_new_fks:
model_state = self.to_state.models[app_label, model_name]
self.add_to_migration(
@ -370,7 +371,7 @@ class MigrationAutodetector(object):
Adds a dependency to app_label's newest migration on
other_app_label's latest migration.
"""
if self.migrations.get(other_app_label, []):
if self.migrations.get(other_app_label):
dependency = (other_app_label, self.migrations[other_app_label][-1].name)
else:
dependency = (other_app_label, "__first__")

2
tests/migrations/test_autodetector.py
View File

@ -343,7 +343,7 @@ class AutodetectorTests(TestCase):
self.assertEqual(action.name, "author")
# Right dependencies?
self.assertEqual(migration1.dependencies, [("otherapp", "auto_1")])
self.assertEqual(migration2.dependencies, [])
self.assertEqual(migration2.dependencies, [('testapp', '__first__')])
self.assertEqual(set(migration3.dependencies), set([("otherapp", "auto_1"), ("testapp", "auto_1")]))
def test_same_app_circular_fk_dependency(self):