checks.py 文件源码

def _check_radio_fields_value(self, obj, val, label):
        """ Check type of a value of `radio_fields` dictionary. """

        from django.contrib.admin.options import HORIZONTAL, VERTICAL

        if val not in (HORIZONTAL, VERTICAL):
            return [
                checks.Error(
                    "The value of '%s' must be either admin.HORIZONTAL or admin.VERTICAL." % label,
                    obj=obj.__class__,
                    id='admin.E024',
                )
            ]
        else:
            return []