Django model

class Question(models.Model):
    name = models.CharField(max_length=255, null=False)
    type = models.CharField(max_length=255, null=False, choices=QUESTION_TYPES)
    possible_answers = JSONField(default=[])

    def get_choices(self):
        res = []
        for i, possible_answer in enumerate(self.possible_answers):
            res.append(("answer_%s" % i, possible_answer))
        return res

    def __str__(self):
        return self.name

class Answer(models.Model):
    question = models.ForeignKey('Question', on_delete=models.CASCADE)
    answer = models.CharField(max_length=255, null=False, blank=True)

    def __str__(self):
        return "Answer to %s" % self.question