django.db.migrations.recorder.MigrationRecorder

class documentation

class MigrationRecorder:

Deal with storing migration records in the database.

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.

Method	`__init__`	Undocumented
Method	`applied_migrations`	Return a dict mapping (app_name, migration_name) to Migration instances for all applied migrations.
Method	`ensure_schema`	Ensure the table exists and has the correct schema.
Method	`flush`	Delete all migration records. Useful for testing migrations.
Method	`has_table`	Return True if the django_migrations table exists.
Method	`record_applied`	Record that a migration was applied.
Method	`record_unapplied`	Record that a migration was unapplied.
Class Variable	`_migration_class`	Undocumented
Instance Variable	`connection`	Undocumented
Property	`Migration`	Lazy load to avoid AppRegistryNotReady if installed apps import MigrationRecorder.
Property	`migration_qs`	Undocumented

def __init__(self, connection):

Undocumented

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.

def record_applied(self, app, name):

Record that a migration was applied.

def record_unapplied(self, app, name):

Record that a migration was unapplied.

_migration_class =

Undocumented

connection =

Undocumented

@classproperty
Migration =

Lazy load to avoid AppRegistryNotReady if installed apps import MigrationRecorder.

@property
migration_qs =

Undocumented