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https://github.com/MarijnDoeve/TijdVoorDeTest.git
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62 lines
1.7 KiB
Python
62 lines
1.7 KiB
Python
from django.db import models
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from django.db.models import QuerySet
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from django.utils.translation import gettext_lazy as _
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from django_stubs_ext.db.models import TypedModelMeta
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from quiz.models import Answer
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class NoActiveTestForSeason(Exception):
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pass
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class QuizAlreadyFinished(Exception):
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pass
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class Question(models.Model):
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question = models.CharField(max_length=256, verbose_name=_("question"))
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quiz = models.ForeignKey(
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"Quiz",
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on_delete=models.CASCADE,
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related_name="questions",
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verbose_name=_("quiz"),
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)
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enabled = models.BooleanField(default=True, verbose_name=_("enabled"))
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@property
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def order(self):
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return self._order
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@property
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def right_answer(self) -> QuerySet[Answer]:
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return self.answers.filter(is_right_answer=True)
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@property
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def has_right_answer(self) -> bool:
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return self.answers.filter(is_right_answer=True).count() > 0
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@property
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def errors(self) -> str | None:
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if self.answers.count() == 0:
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return _("Error: Question has no answers")
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n_correct_answers = self.answers.filter(is_right_answer=True).count()
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if n_correct_answers == 0:
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return _("Error: This question has no right answer!")
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if n_correct_answers > 1:
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return _("Warning: This question has multiple correct answers")
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return None
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def __str__(self) -> str:
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return f"{self._order + 1}. {self.question} ({self.quiz}) ({self.answers.count()} answers, {self.answers.filter(is_right_answer=True).count()} correct)"
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class Meta(TypedModelMeta):
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verbose_name = _("question")
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verbose_name_plural = _("questions")
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order_with_respect_to = "quiz"
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