Python executor.MigrationExecutor方法代码示例

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def migrations(transactional_db):
    """
    This fixture returns a helper object to test Django data migrations.
    Based on: https://gist.github.com/bennylope/82a6088c02fefdd47e18f3c04ec167af
    """

    class Migrator(object):
        def migrate(self, app, to):
            migration = [(app, to)]
            executor = MigrationExecutor(connection)
            executor.migrate(migration)
            return executor.loader.project_state(migration).apps

        def reset(self):
            call_command("migrate", no_input=True)

    return Migrator() 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def setUp(self):
        assert (
            self.migrate_from and self.migrate_to
        ), "TestCase '{}' must define migrate_from and migrate_to properties".format(
            type(self).__name__
        )
        self.migrate_from = [(self.app, self.migrate_from)]
        self.migrate_to = [(self.app, self.migrate_to)]
        executor = MigrationExecutor(connection)
        old_apps = executor.loader.project_state(self.migrate_from).apps

        # Reverse to the original migration
        executor.migrate(self.migrate_from)

        self.setUpBeforeMigration(old_apps)

        # Run the migration to test
        executor = MigrationExecutor(connection)
        executor.loader.build_graph()  # reload.
        executor.migrate(self.migrate_to)

        self.apps = executor.loader.project_state(self.migrate_to).apps 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def check_migrations():
    """
    Check the status of database migrations.
    The koku API server is responsible for running all database migrations.  This method
    will return the state of the database and whether or not all migrations have been completed.
    Hat tip to the Stack Overflow contributor: https://stackoverflow.com/a/31847406
    Returns:
        Boolean - True if database is available and migrations have completed.  False otherwise.
    """
    try:
        connection = connections[DEFAULT_DB_ALIAS]
        connection.prepare_database()
        executor = MigrationExecutor(connection)
        targets = executor.loader.graph.leaf_nodes()
        return not executor.migration_plan(targets)
    except OperationalError:
        return False 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def check_migrations(self):
        """
        Check the status of database migrations.

        The koku API server is responsible for running all database migrations.  This method
        will return the state of the database and whether or not all migrations have been completed.

        Hat tip to the Stack Overflow contributor: https://stackoverflow.com/a/31847406

        Returns:
            Boolean - True if database is available and migrations have completed.  False otherwise.

        """
        connection = connections[DEFAULT_DB_ALIAS]
        connection.prepare_database()
        executor = MigrationExecutor(connection)
        targets = executor.loader.graph.leaf_nodes()
        return not executor.migration_plan(targets) 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def setUp(self):
        assert self.migrate_from and self.migrate_to, \
            "TestCase '{}' must define migrate_from and migrate_to properties".format(type(self).__name__)

        executor = MigrationExecutor(connection)
        old_apps = executor.loader.project_state(self.migrate_from).apps

        # Reverse to the original migration
        executor.migrate(self.migrate_from)

        self.setUpBeforeMigration(old_apps)

        # Run the migration to test
        executor = MigrationExecutor(connection)
        executor.loader.build_graph()  # reload.
        executor.migrate(self.migrate_to)

        self.apps = executor.loader.project_state(self.migrate_to).apps 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def setUp(self) -> None:
        assert self.migrate_from and self.migrate_to, \
            f"TestCase '{type(self).__name__}' must define migrate_from and migrate_to properties"
        migrate_from: List[Tuple[str, str]] = [(self.app, self.migrate_from)]
        migrate_to: List[Tuple[str, str]] = [(self.app, self.migrate_to)]
        executor = MigrationExecutor(connection)
        old_apps = executor.loader.project_state(migrate_from).apps

        # Reverse to the original migration
        executor.migrate(migrate_from)

        self.setUpBeforeMigration(old_apps)

        # Run the migration to test
        executor = MigrationExecutor(connection)
        executor.loader.build_graph()  # reload.
        executor.migrate(migrate_to)

        self.apps = executor.loader.project_state(migrate_to).apps 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def handle(self, *args, **options):
        changed = set()

        self.stdout.write("Checking...")
        for db in settings.DATABASES.keys():
            try:
                executor = MigrationExecutor(connections[db])
            except OperationalError:
                sys.exit("Unable to check migrations: cannot connect to database\n")

            autodetector = MigrationAutodetector(
                executor.loader.project_state(), ProjectState.from_apps(apps),
            )
            changed.update(autodetector.changes(graph=executor.loader.graph).keys())

        changed -= set(options["ignore"])

        if changed:
            sys.exit(
                "Apps with model changes but no corresponding migration file: %(changed)s\n"
                % {"changed": list(changed)}
            )
        else:
            sys.stdout.write("All migration files present\n") 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def setUp(self):
        assert (
            self.migrate_from and self.migrate_to
        ), "TestCase '{}' must define migrate_from and migrate_to properties".format(
            type(self).__name__
        )
        self.migrate_from = [(self.app, self.migrate_from)]
        self.migrate_to = [(self.app, self.migrate_to)]
        executor = MigrationExecutor(connection)
        old_apps = executor.loader.project_state(self.migrate_from).apps

        # Reverse to the original migration
        executor.migrate(self.migrate_from)

        if self.migrate_fixtures:
            self.load_fixtures(self.migrate_fixtures, apps=old_apps)

        self.setUpBeforeMigration(old_apps)

        # Run the migration to test
        executor = MigrationExecutor(connection)
        executor.loader.build_graph()  # reload.
        executor.migrate(self.migrate_to)

        self.apps = executor.loader.project_state(self.migrate_to).apps 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def get_fake_model(fields=None, model_base=LocalizedModel, meta_options={}):
    """Creates a fake model to use during unit tests."""

    model = define_fake_model(fields, model_base, meta_options)

    class TestProject:
        def clone(self, *_args, **_kwargs):
            return self

        @property
        def apps(self):
            return self

    class TestMigration(migrations.Migration):
        operations = [HStoreExtension()]

    with connection.schema_editor() as schema_editor:
        migration_executor = MigrationExecutor(schema_editor.connection)
        migration_executor.apply_migration(
            TestProject(), TestMigration("eh", "postgres_extra")
        )

        schema_editor.create_model(model)

    return model 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def setUp(self):
        self.migrate_from = [self.migrate_from]
        self.migrate_to = [self.migrate_to]

        # Reverse to the original migration
        executor = MigrationExecutor(connection)
        executor.migrate(self.migrate_from)

        old_apps = executor.loader.project_state(self.migrate_from).apps
        self.setUpBeforeMigration(old_apps)

        # Run the migration to test
        executor.loader.build_graph()
        executor.migrate(self.migrate_to)

        self.apps = executor.loader.project_state(self.migrate_to).apps 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def test_apply_all_replaced_marks_replacement_as_applied(self):
        """
        Applying all replaced migrations marks replacement as applied (#24628).
        """
        recorder = MigrationRecorder(connection)
        # Place the database in a state where the replaced migrations are
        # partially applied: 0001 is applied, 0002 is not.
        recorder.record_applied("migrations", "0001_initial")
        executor = MigrationExecutor(connection)
        # Use fake because we don't actually have the first migration
        # applied, so the second will fail. And there's no need to actually
        # create/modify tables here, we're just testing the
        # MigrationRecord, which works the same with or without fake.
        executor.migrate([("migrations", "0002_second")], fake=True)

        # Because we've now applied 0001 and 0002 both, their squashed
        # replacement should be marked as applied.
        self.assertIn(
            ("migrations", "0001_squashed_0002"),
            recorder.applied_migrations(),
        ) 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def test_migrate_marks_replacement_applied_even_if_it_did_nothing(self):
        """
        A new squash migration will be marked as applied even if all its
        replaced migrations were previously already applied (#24628).
        """
        recorder = MigrationRecorder(connection)
        # Record all replaced migrations as applied
        recorder.record_applied("migrations", "0001_initial")
        recorder.record_applied("migrations", "0002_second")
        executor = MigrationExecutor(connection)
        executor.migrate([("migrations", "0001_squashed_0002")])

        # Because 0001 and 0002 are both applied, even though this migrate run
        # didn't apply anything new, their squashed replacement should be
        # marked as applied.
        self.assertIn(
            ("migrations", "0001_squashed_0002"),
            recorder.applied_migrations(),
        ) 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def setUp(self):
        assert self.migrate_from and self.migrate_to, \
            "TestCase '{}' must define migrate_from and migrate_to properties".format(type(self).__name__)
        self.migrate_from = [(self.app, self.migrate_from)]
        self.migrate_to = [(self.app, self.migrate_to)]
        executor = MigrationExecutor(connection)
        old_apps = executor.loader.project_state(self.migrate_from).apps

        # Reverse to the original migration
        executor.migrate(self.migrate_from)

        super(TestMigrations, self).setUp()
        self.setUpBeforeMigration(old_apps)

        # Run the migration to test
        executor = MigrationExecutor(connection)
        executor.loader.build_graph()  # reload.
        executor.migrate(self.migrate_to)

        self.apps = executor.loader.project_state(self.migrate_to).apps 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def test_atomic_operation_in_non_atomic_migration(self):
        """
        An atomic operation is properly rolled back inside a non-atomic
        migration.
        """
        executor = MigrationExecutor(connection)
        with self.assertRaisesMessage(RuntimeError, "Abort migration"):
            executor.migrate([("migrations", "0001_initial")])
        migrations_apps = executor.loader.project_state(("migrations", "0001_initial")).apps
        Editor = migrations_apps.get_model("migrations", "Editor")
        self.assertFalse(Editor.objects.exists())
        # Record previous migration as successful.
        executor.migrate([("migrations", "0001_initial")], fake=True)
        # Rebuild the graph to reflect the new DB state.
        executor.loader.build_graph()
        # Migrating backwards is also atomic.
        with self.assertRaisesMessage(RuntimeError, "Abort migration"):
            executor.migrate([("migrations", None)])
        self.assertFalse(Editor.objects.exists()) 

# 需要导入模块: from django.db.migrations import executor [as 别名]
# 或者: from django.db.migrations.executor import MigrationExecutor [as 别名]
def test_unrelated_applied_migrations_mutate_state(self):
        """
        #26647 - Unrelated applied migrations should be part of the final
        state in both directions.
        """
        executor = MigrationExecutor(connection)
        executor.migrate([
            ('mutate_state_b', '0002_add_field'),
        ])
        # Migrate forward.
        executor.loader.build_graph()
        state = executor.migrate([
            ('mutate_state_a', '0001_initial'),
        ])
        self.assertIn('added', dict(state.models['mutate_state_b', 'b'].fields))
        executor.loader.build_graph()
        # Migrate backward.
        state = executor.migrate([
            ('mutate_state_a', None),
        ])
        self.assertIn('added', dict(state.models['mutate_state_b', 'b'].fields))
        executor.migrate([
            ('mutate_state_b', None),
        ])