models.py 文件源码

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

        errors = []
        errors.extend(check_variations(cls.VARIATIONS, cls))
        return errors