related.py 文件源码

def _check_ignored_options(self, **kwargs):
        warnings = []

        if self.has_null_arg:
            warnings.append(
                checks.Warning(
                    'null has no effect on ManyToManyField.',
                    hint=None,
                    obj=self,
                    id='fields.W340',
                )
            )

        if len(self._validators) > 0:
            warnings.append(
                checks.Warning(
                    'ManyToManyField does not support validators.',
                    hint=None,
                    obj=self,
                    id='fields.W341',
                )
            )

        return warnings