r"""Return the internal state local to a specific mapped class. E.g., given a class ``User``:: class User(Base): # ... keywords = association_proxy("kws", "keyword") If we access this :class:`.AssociationProxy` from :attr:`_orm.
(
self, class_: Type[Any], obj: Optional[object] = None
)
| 463 | self._as_instance(class_, instance).delete(instance) |
| 464 | |
| 465 | def for_class( |
| 466 | self, class_: Type[Any], obj: Optional[object] = None |
| 467 | ) -> AssociationProxyInstance[_T]: |
| 468 | r"""Return the internal state local to a specific mapped class. |
| 469 | |
| 470 | E.g., given a class ``User``:: |
| 471 | |
| 472 | class User(Base): |
| 473 | # ... |
| 474 | |
| 475 | keywords = association_proxy("kws", "keyword") |
| 476 | |
| 477 | If we access this :class:`.AssociationProxy` from |
| 478 | :attr:`_orm.Mapper.all_orm_descriptors`, and we want to view the |
| 479 | target class for this proxy as mapped by ``User``:: |
| 480 | |
| 481 | inspect(User).all_orm_descriptors["keywords"].for_class(User).target_class |
| 482 | |
| 483 | This returns an instance of :class:`.AssociationProxyInstance` that |
| 484 | is specific to the ``User`` class. The :class:`.AssociationProxy` |
| 485 | object remains agnostic of its parent class. |
| 486 | |
| 487 | :param class\_: the class that we are returning state for. |
| 488 | |
| 489 | :param obj: optional, an instance of the class that is required |
| 490 | if the attribute refers to a polymorphic target, e.g. where we have |
| 491 | to look at the type of the actual destination object to get the |
| 492 | complete path. |
| 493 | |
| 494 | """ |
| 495 | return self._as_instance(class_, obj) |
| 496 | |
| 497 | def _as_instance( |
| 498 | self, class_: Any, obj: Any |