Class MigrationRecorder
Deal with storing migration records in the database.
Declaration
class MigrationRecorder
source linkDocumentation
Because this table is actually itself used for dealing with model
creation, it's the one thing we can't do normally via migrations.
We manually handle table creation/schema updating (using schema backend)
and then have a floating model to do queries with.
If a migration is unapplied its row is removed from the table. Having
a row in the table always means a migration is applied.
Methods
▷ def Migration(cls) @classproperty Lazy load to avoid AppRegistryNotReady if installed apps import MigrationRecorder.
@classproperty
def Migration(cls)
▷ def applied_migrations(self) Return a dict mapping (app_name, migration_name) to Migration instances for all applied migrations.
▷ def ensure_schema(self) Ensure the table exists and has the correct schema.
▷ def flush(self) Delete all migration records. Useful for testing migrations.
▷ def has_table(self) Return True if the django_migrations table exists.
@property
def migration_qs(self)
▷ def record_applied(self, app, name) Record that a migration was applied.
Reexports