def regist():
if request.method == 'POST':
data = request.get_json()
username = data.get('username')
userid = data.get('userid')
password = data.get('password')
birthdate = data.get('birthdate')
if not (userid and username and password):
return jsonify({'error': 'No arguments'}), 400
user = UserModel()
user.id = userid
user.name = username
user.birthdate = birthdate
user.password = password
db.session.add(user)
db.session.commit()
return jsonify(), 201
