from django.db import models
from django.utils import timezone


class Signup(models.Model):
    start = models.DateTimeField()
    end = models.DateTimeField()


class Question(models.Model):
    pass


class Answer(models.Model):
    signup = models.ForeignKey(Signup, on_delete=models.CASCADE)
    question = models.ForeignKey(Question, on_delete=models.PROTECT)