Method get_attribute

rest_framework/relations.py:172–189

(self, instance)

        return False

    def get_attribute(self, instance):
        if self.use_pk_only_optimization() and self.source_attrs:
            # Optimized case, return a mock object only containing the pk attribute.
            with contextlib.suppress(AttributeError):
                attribute_instance = get_attribute(instance, self.source_attrs[:-1])
                value = attribute_instance.serializable_value(self.source_attrs[-1])
                if is_simple_callable(value):
                    # Handle edge case where the relationship `source` argument
                    # points to a `get_relationship()` method on the model.
                    value = value()

                # Handle edge case where relationship `source` argument points
                # to an instance instead of a pk (e.g., a `@property`).
                value = getattr(value, 'pk', value)

                return PKOnlyObject(pk=value)
        # Standard case, return the object instance.
        return super().get_attribute(instance)

    def get_choices(self, cutoff=None):
        queryset = self.get_queryset()