43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
from django.db import models
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from django.db.models import F
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from django.db.models.expressions import Window
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from django.db.models.functions import Rank
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class Version(models.Model):
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name = models.CharField(max_length=50, unique=True)
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created_at = models.DateTimeField(auto_now_add=True)
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def __str__(self) -> str:
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return self.name
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class ScoreManager(models.Manager):
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def get_queryset(self) -> models.QuerySet["Score"]:
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return (
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super()
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.get_queryset()
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.select_related("version")
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.annotate(
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rank=Window(
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expression=Rank(),
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order_by=F("points").desc(),
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)
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)
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)
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class Score(models.Model):
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username = models.CharField(max_length=100)
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points = models.IntegerField()
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version = models.ForeignKey(Version, on_delete=models.PROTECT, related_name="scores")
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created_at = models.DateTimeField(auto_now_add=True)
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objects = ScoreManager()
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class Meta:
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ordering = ["-points"]
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def __str__(self) -> str:
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return f"{self.username}: {self.points}"
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