Method fget

lib/sqlalchemy/orm/descriptor_props.py:311–329

(instance: Any)

        """

        def fget(instance: Any) -> Any:
            dict_ = attributes.instance_dict(instance)
            state = attributes.instance_state(instance)

            if self.key not in dict_:
                # key not present.  Iterate through related
                # attributes, retrieve their values.  This
                # ensures they all load.
                values = [
                    getattr(instance, key) for key in self._attribute_keys
                ]

                if self.key not in dict_:
                    dict_[self.key] = self._construct_composite(*values)
                    state.manager.dispatch.refresh(
                        state, self._COMPOSITE_FGET, [self.key]
                    )

            return dict_.get(self.key, None)

        def fset(instance: Any, value: Any) -> None:
            if value is LoaderCallableStatus.DONT_SET: