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Code Issues 30 Releases Wiki Activity

Fixed #25109 -- Stopped silencing explicitly specified migration modules import errors.

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Thanks Tim for the review.
This commit is contained in:
Simon Charette 2016-08-26 14:04:12 -07:00
parent a72411e140
commit 0d7929266e
4 changed files with 28 additions and 6 deletions
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14
django/db/migrations/loader.py
View File

@ -54,11 +54,16 @@ class MigrationLoader(object):
@classmethod
def migrations_module(cls, app_label):
"""
Return the path to the migrations module for the specified app_label
and a boolean indicating if the module is specified in
settings.MIGRATION_MODULE.
"""
if app_label in settings.MIGRATION_MODULES:
return settings.MIGRATION_MODULES[app_label]
return settings.MIGRATION_MODULES[app_label], True
else:
app_package_name = apps.get_app_config(app_label).name
return '%s.%s' % (app_package_name, MIGRATIONS_MODULE_NAME)
return '%s.%s' % (app_package_name, MIGRATIONS_MODULE_NAME), False
def load_disk(self):
"""
@ -69,7 +74,7 @@ class MigrationLoader(object):
self.migrated_apps = set()
for app_config in apps.get_app_configs():
# Get the migrations module directory
module_name = self.migrations_module(app_config.label)
module_name, explicit = self.migrations_module(app_config.label)
if module_name is None:
self.unmigrated_apps.add(app_config.label)
continue
@ -79,7 +84,8 @@ class MigrationLoader(object):
except ImportError as e:
# I hate doing this, but I don't want to squash other import errors.
# Might be better to try a directory check directly.
if "No module named" in str(e) and MIGRATIONS_MODULE_NAME in str(e):
if ((explicit and self.ignore_no_migrations) or (
not explicit and "No module named" in str(e) and MIGRATIONS_MODULE_NAME in str(e))):
self.unmigrated_apps.add(app_config.label)
continue
raise

2
django/db/migrations/questioner.py
View File

@ -37,7 +37,7 @@ class MigrationQuestioner(object):
app_config = apps.get_app_config(app_label)
except LookupError: # It's a fake app.
return self.defaults.get("ask_initial", False)
migrations_import_path = MigrationLoader.migrations_module(app_config.label)
migrations_import_path, _ = MigrationLoader.migrations_module(app_config.label)
if migrations_import_path is None:
# It's an application with migrations disabled.
return self.defaults.get("ask_initial", False)

2
django/db/migrations/writer.py
View File

@ -221,7 +221,7 @@ class MigrationWriter(object):
@property
def basedir(self):
migrations_package_name = MigrationLoader.migrations_module(self.migration.app_label)
migrations_package_name, _ = MigrationLoader.migrations_module(self.migration.app_label)
if migrations_package_name is None:
raise ValueError(

16
tests/migrations/test_loader.py
View File

@ -205,6 +205,22 @@ class LoaderTests(TestCase):
self.assertEqual(migration_loader.migrated_apps, set())
self.assertEqual(migration_loader.unmigrated_apps, {'migrated_app'})
@override_settings(
INSTALLED_APPS=['migrations.migrations_test_apps.migrated_app'],
MIGRATION_MODULES={'migrated_app': 'missing-module'},
)
def test_explicit_missing_module(self):
"""
If a MIGRATION_MODULES override points to a missing module, the error
raised during the importation attempt should be propagated unless
`ignore_no_migrations=True`.
"""
with self.assertRaisesMessage(ImportError, 'missing-module'):
migration_loader = MigrationLoader(connection)
migration_loader = MigrationLoader(connection, ignore_no_migrations=True)
self.assertEqual(migration_loader.migrated_apps, set())
self.assertEqual(migration_loader.unmigrated_apps, {'migrated_app'})
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed"})
def test_loading_squashed(self):
"Tests loading a squashed migration"