Commit a3c01b0d authored by Markus Holtermann's avatar Markus Holtermann
Browse files

Fixed #24919 -- Allowed disabling of migrations on a per app basis

parent ec704371

django/db/migrations/loader.py

+3 −0
Original line number Diff line number Diff line
@@ -66,6 +66,9 @@ class MigrationLoader(object): 
        for app_config in apps.get_app_configs():

            # Get the migrations module directory

            module_name = self.migrations_module(app_config.label)

            if module_name is None:

                self.unmigrated_apps.add(app_config.label)

                continue

            was_loaded = module_name in sys.modules

            try:

                module = import_module(module_name)

docs/ref/settings.txt

+9 −0
Original line number Diff line number Diff line
@@ -1862,6 +1862,15 @@ In this case, migrations pertaining to the ``blog`` app will be contained in the 
If you provide the ``app_label`` argument, :djadmin:`makemigrations` will

automatically create the package if it doesn't already exist.



.. versionadded:: 1.9



When you supply ``None`` as a value for an app, Django will consider the app as

an app without migrations regardless of an existing ``migrations`` submodule.

This can be used, for example, in a test settings file to skip migrations while

testing (tables will still be created for the apps' models). If this is used in

your general project settings, remember to use the migrate

:djadminopt:`--run-syncdb` option if you want to create tables for the app.



.. setting:: MONTH_DAY_FORMAT



MONTH_DAY_FORMAT

docs/releases/1.9.txt

+3 −0
Original line number Diff line number Diff line
@@ -446,6 +446,9 @@ Migrations 


* Added support for serialization of ``functools.partial`` objects.



* When supplying ``None`` as a value in :setting:`MIGRATION_MODULES`, Django

  will consider the app an app without migrations.



Models

^^^^^^

tests/migrations/test_loader.py

+23 −0
Original line number Diff line number Diff line
@@ -179,6 +179,29 @@ class LoaderTests(TestCase): 
                "App missing __init__.py in migrations module not in unmigrated apps."

            )



    @override_settings(

        INSTALLED_APPS=['migrations.migrations_test_apps.migrated_app'],

    )

    def test_marked_as_migrated(self):

        """

        Undefined MIGRATION_MODULES implies default migration module.

        """

        migration_loader = MigrationLoader(connection)

        self.assertEqual(migration_loader.migrated_apps, {'migrated_app'})

        self.assertEqual(migration_loader.unmigrated_apps, set())



    @override_settings(

        INSTALLED_APPS=['migrations.migrations_test_apps.migrated_app'],

        MIGRATION_MODULES={"migrated_app": None},

    )

    def test_marked_as_unmigrated(self):

        """

        MIGRATION_MODULES allows disabling of migrations for a particular app.

        """

        migration_loader = MigrationLoader(connection)

        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"