django.db.migrations.operations.SeparateDatabaseAndState

class documentation

class SeparateDatabaseAndState(Operation): (source)

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Take two lists of operations - ones that will be used for the database, and ones that will be used for the state change. This allows operations that don't support state change to have it applied, or have operations that affect the state or not the database, or so on.

Method __init__ Undocumented
Method database_backwards Perform the mutation on the database schema in the reverse direction - e.g. if this were CreateModel, it would in fact drop the model's table.
Method database_forwards Perform the mutation on the database schema in the normal (forwards) direction.
Method deconstruct Return a 3-tuple of class import path (or just name if it lives under django.db.migrations), positional arguments, and keyword arguments.
Method describe Output a brief summary of what the action does.
Method state_forwards Take the state from the previous migration, and mutate it so that it matches what this migration would perform.
Class Variable serialization_expand_args Undocumented
Instance Variable database_operations Undocumented
Instance Variable state_operations Undocumented

Inherited from Operation:

Method __new__ Undocumented
Method __repr__ Undocumented
Method allow_migrate_model Return whether or not a model may be migrated.
Method reduce Return either a list of operations the actual operation should be replaced with or a boolean that indicates whether or not the specified operation can be optimized across.
Method references_field Return True if there is a chance this operation references the given field name, with an app label for accuracy.
Method references_model Return True if there is a chance this operation references the given model name (as a string), with an app label for accuracy.
Class Variable atomic Undocumented
Class Variable elidable Undocumented
Class Variable reduces_to_sql Undocumented
Class Variable reversible Undocumented
Property migration_name_fragment A filename part suitable for automatically naming a migration containing this operation, or None if not applicable.
Instance Variable _constructor_args Undocumented
def __init__(self, database_operations=None, state_operations=None): (source)

Undocumented

def database_backwards(self, app_label, schema_editor, from_state, to_state): (source)
overrides django.db.migrations.operations.base.Operation.database_backwards

Perform the mutation on the database schema in the reverse direction - e.g. if this were CreateModel, it would in fact drop the model's table.

def database_forwards(self, app_label, schema_editor, from_state, to_state): (source)
overrides django.db.migrations.operations.base.Operation.database_forwards

Perform the mutation on the database schema in the normal (forwards) direction.

def deconstruct(self): (source)
overrides django.db.migrations.operations.base.Operation.deconstruct

Return a 3-tuple of class import path (or just name if it lives under django.db.migrations), positional arguments, and keyword arguments.

def describe(self): (source)
overrides django.db.migrations.operations.base.Operation.describe

Output a brief summary of what the action does.

def state_forwards(self, app_label, state): (source)
overrides django.db.migrations.operations.base.Operation.state_forwards

Take the state from the previous migration, and mutate it so that it matches what this migration would perform.

serialization_expand_args: list[str] = (source)
overrides django.db.migrations.operations.base.Operation.serialization_expand_args

Undocumented

database_operations = (source)

Undocumented

state_operations = (source)

Undocumented