Django Error:1452, 'Cannot add or update a child row: a foreign key constraint fails

如果在使用Django Admin後臺添加用戶時出現報錯：

django.db.utils.IntegrityError: (1452, 'Cannot add or update a child row: a foreign key constraint fails (`mxonline`.`django_admin_log`, CONSTRAINT `django_admin_log_user_id_c564eba6_fk_auth_user_id` FOREIGN KEY (`user_id`) REFERENCES `auth_user` (`id`))')

這時候需要在setting文件的databases中添加以下代碼取消外鍵檢查

'OPTIONS':{
        "init_command":"SET foreign_key_checks = 0;",
}