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https://github.com/MarijnDoeve/TijdVoorDeTest.git
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62 lines
1.9 KiB
Python
62 lines
1.9 KiB
Python
from django.db import models
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from django.db.models import F, OuterRef, Subquery
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from django.db.models.aggregates import Count, Max, Min
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from django.db.models.functions import Coalesce
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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 Candidate, Correction
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class Quiz(models.Model):
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name = models.CharField(max_length=64, verbose_name=_("name"))
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season = models.ForeignKey(
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"Season",
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on_delete=models.CASCADE,
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related_name="quizzes",
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verbose_name=_("season"),
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)
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dropouts = models.PositiveSmallIntegerField(
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verbose_name=_("dropouts"),
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default=1,
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)
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def is_valid_quiz(self) -> bool:
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return True
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# Check > 0 active questions
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# Check every question 1 right answer
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def get_score(self):
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time_query = (
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Candidate.objects.filter(id=OuterRef("id"), answers__quiz=self)
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.annotate(time=Max("answers__created") - Min("answers__created"))
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.values("time")
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)
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corrections = Correction.objects.filter(
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quiz=self, candidate=OuterRef("id")
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).values("amount")
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scores = (
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Candidate.objects.filter(
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answers__answer__is_right_answer=True,
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answers__quiz=self,
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)
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.values("id", "name")
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.annotate(
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correct=Count("answers"),
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corrections=Coalesce(Subquery(corrections), 0.0),
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score=F("correct") + F("corrections"),
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time=Subquery(time_query),
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)
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.order_by("-score", "time")
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)
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return scores
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def __str__(self) -> str:
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return f"{self.season.name} - {self.name}"
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class Meta(TypedModelMeta):
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verbose_name = _("quiz")
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verbose_name_plural = _("quizzes")
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