django 按字段排序的查詢集

Question

我有這個 model：

class ProgrammingQuestionAnswer(models.Model):
    programming_question = models.ForeignKey(ProgrammingQuestion, on_delete=models.CASCADE, related_name='programming_question_a', null=True, blank=True)
    time = models.DateTimeField(default=timezone.now)
    score = models.IntegerField(null=True, blank=True, default=0)
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='writer_answer_programming_question', null=True, blank=True)
    accept = models.BooleanField(default=False)
    file = models.FileField(upload_to=content_file_name)
    result = models.TextField(null=True, blank=True)
    file_name = models.CharField(max_length=500, null=True, blank=True)
    max_score = models.IntegerField(null=True, blank=True, default=0)

我想寫一個查詢來獲取解決更多問題的用戶（有更多的接受=真）和那些相等的按時間排序（時間字段）謝謝

Answer 1

嘗試

accepted = Q( 'writer_answer_programming_question__accept=True')

User.objects.all.annotate(
    accepted_count = Count('writer_answer_programming_question', filter = accepted    
    ).order_by('accepted_count', 'time'
    )
    

文檔： 聚合函數， 過濾注釋