def signin(cls): data = json.loads(request.data.decode('utf-8')) req_params = ['username'] if 'username' not in data: return json.dumps({"response": "ill-formed request"}), 400 error_message, status, response = UserController.signin( data['username']) if error_message: return json.dumps({"response": error_message}), status return json.dumps({"response": response}), 200