models.py 文件源码

def _check_storage_location(cls, **kwargs):
        if not cls.STORAGE_LOCATION:
            return [
                checks.Error(
                    'STORAGE_LOCATION is required',
                    obj=cls
                )
            ]
        elif not isinstance(cls.STORAGE_LOCATION, str):
            return [
                checks.Error(
                    'STORAGE_LOCATION must be an instance of str',
                    obj=cls
                )
            ]
        else:
            return []