| 377 | |
| 378 | |
| 379 | class ManyToManyFieldInstance(RelationalField[MODEL]): |
| 380 | field_type = ManyToManyRelation |
| 381 | |
| 382 | def __init__( |
| 383 | self, |
| 384 | model_name: type[Model] | str, |
| 385 | through: str | None = None, |
| 386 | forward_key: str | None = None, |
| 387 | backward_key: str = "", |
| 388 | related_name: str = "", |
| 389 | on_delete: OnDelete = CASCADE, |
| 390 | field_type: type[MODEL] = None, # type: ignore |
| 391 | unique: bool = True, |
| 392 | **kwargs: Any, |
| 393 | ) -> None: |
| 394 | # TODO: rename through to through_table |
| 395 | # TODO: add through to use a Model |
| 396 | if "create_unique_index" in kwargs: |
| 397 | warnings.warn( |
| 398 | "Parameter `create_unique_index` is deprecated! Use `unique` instead.", |
| 399 | DeprecationWarning, |
| 400 | stacklevel=2, |
| 401 | ) |
| 402 | unique = kwargs.pop("create_unique_index") |
| 403 | super().__init__(field_type, unique=unique, **kwargs) |
| 404 | self.validate_model_name(model_name) |
| 405 | self.model_name = model_name |
| 406 | self.related_name: str = related_name |
| 407 | if not forward_key: |
| 408 | if not isinstance(model_name, str): |
| 409 | forward_key = f"{model_name.__name__.lower()}_id" |
| 410 | else: |
| 411 | forward_key = f"{model_name.split('.')[1].lower()}_id" |
| 412 | self.forward_key: str = forward_key |
| 413 | self.backward_key: str = backward_key |
| 414 | self.through: str = through # type: ignore |
| 415 | self.through_schema: str | None = None |
| 416 | self._generated: bool = False |
| 417 | self.on_delete = on_delete |
| 418 | |
| 419 | def describe(self, serializable: bool) -> dict: |
| 420 | desc = super().describe(serializable) |
| 421 | if isinstance(self.model_name, str): |
| 422 | model_name = self.model_name |
| 423 | else: |
| 424 | model: type[Model] = self.model_name |
| 425 | model_name = f"{model._meta.app}.{model.__name__}" |
| 426 | desc["model_name"] = model_name |
| 427 | desc["related_name"] = self.related_name |
| 428 | desc["forward_key"] = self.forward_key |
| 429 | desc["backward_key"] = self.backward_key |
| 430 | desc["through"] = self.through |
| 431 | desc["on_delete"] = str(self.on_delete) |
| 432 | desc["_generated"] = self._generated |
| 433 | return desc |
| 434 | |
| 435 | |
| 436 | @overload |
no outgoing calls
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