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import typing
from django.contrib.postgres import fields
from django.db import models
class Quiz(models.Model):
name = models.CharField(max_length=100)
def __str__(self):
return self.name
class Question(models.Model):
quiz = models.ForeignKey(Quiz, on_delete=models.CASCADE)
prompt = models.CharField(max_length=200)
def __str__(self):
return self.prompt
def get_answer(self) -> typing.Union["Answer", None]:
return getattr(self, "multiplechoiceanswer", None) or getattr(self, "freetextanswer", None)
class Answer(models.Model):
question = models.OneToOneField(Question, on_delete=models.CASCADE)
correct_answer = models.CharField(max_length=200)
class Meta:
abstract = True
def __str__(self) -> str:
return self.correct_answer
def is_correct(self, user_answer) -> bool:
return user_answer == self.correct_answer
class FreeTextAnswer(Answer):
case_sensitive = models.BooleanField(default=False)
def is_correct(self, user_answer) -> bool:
if not self.case_sensitive:
return user_answer.lower() == self.correct_answer.lower()
return user_answer == self.correct_answer
class MultipleChoiceAnswer(Answer):
choices = fields.ArrayField(models.CharField(max_length=200, blank=True))
def __str__(self) -> str:
return f"{self.correct_answer} from {self.choices}"
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