class RemoveField(FieldOperation): (source)
Remove a field from a model.
Method | database |
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 |
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 | 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 | state |
Take the state from the previous migration, and mutate it so that it matches what this migration would perform. |
Property | migration |
A filename part suitable for automatically naming a migration containing this operation, or None if not applicable. |
Inherited from FieldOperation
:
Method | __init__ |
Undocumented |
Method | is |
Undocumented |
Method | is |
Undocumented |
Method | references |
Return True if there is a chance this operation references the given field name, with an app label for accuracy. |
Method | references |
Return True if there is a chance this operation references the given model name (as a string), with an app label for accuracy. |
Instance Variable | field |
Undocumented |
Instance Variable | model |
Undocumented |
Instance Variable | name |
Undocumented |
Property | model |
Undocumented |
Property | name |
Undocumented |
Inherited from Operation
(via FieldOperation
):
Method | __new__ |
Undocumented |
Method | __repr__ |
Undocumented |
Method | allow |
Return whether or not a model may be migrated. |
Class Variable | atomic |
Undocumented |
Class Variable | elidable |
Undocumented |
Class Variable | reduces |
Undocumented |
Class Variable | reversible |
Undocumented |
Class Variable | serialization |
Undocumented |
Instance Variable | _constructor |
Undocumented |
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.
Return a 3-tuple of class import path (or just name if it lives under django.db.migrations), positional arguments, and keyword arguments.
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.
Take the state from the previous migration, and mutate it so that it matches what this migration would perform.