fields.py 文件源码

def _check_recursion_field_dependecy(self):
        res = []
        for local_field in self._raw_fields.values():
            try:
                f = self.model._meta.get_field(local_field.value)
                if isinstance(f, CompositeForeignKey):
                    res.append(
                        checks.Error(
                            "the field %s depend on the field %s which is another CompositeForeignKey" % (self.name, local_field),
                            hint=None,
                            obj=self,
                            id='compositefk.E005',
                        )
                    )
            except FieldDoesNotExist:
                pass  # _check_to_fields_local_valide already raise errors for this
        return res