Django 如何设置过滤器列表中每个项目的顺序和项目数?
如何设置过滤器列表中每个项目的顺序和项目数Django 如何设置过滤器列表中每个项目的顺序和项目数?,django,Django,如何设置过滤器列表中每个项目的顺序和项目数 class Category(models.Model): category = models.CharField(max_length = 20) Class Question(TimeStampedModel): category = models.ForeignKey(Category, related_name='question_set', on_delete=models.CASCADE) question = models.TextFi
class Category(models.Model):
category = models.CharField(max_length = 20)
Class Question(TimeStampedModel):
category = models.ForeignKey(Category, related_name='question_set', on_delete=models.CASCADE)
question = models.TextField(_('Question Text'))
Category.objects.filter(category__in=['Sport', 'History']).values_list('question_set',flat=True).order_by('?')[:3]
<QuerySet [6, 7, 3]>
类别(models.Model):
类别=型号.CharField(最大长度=20)
课堂提问(TimestamesedModel):
category=models.ForeignKey(category,related\u name='question\u set',on\u delete=models.CASCADE)
question=models.TextField(uquo('question Text'))
Category.objects.filter(Category_uin=['Sport','History'])。value_list('question_set',flat=True)。order_by('?')[:3]
我需要这样的结果:
<QuerySet [1, 3, 2, 7, 11, 9]>
由于使用了[:3]
您将检索前三个元素。您还必须在order\u by
部分中指定所需的顺序。由于使用了[:3]
您将检索前三个元素。您还必须在order\u by
部分中指定所需的顺序。