我的关系如下:
class Question(models.Model):
qid = models.PositiveIntegerField(primary_key=True)
content = models.CharField(max_length=128)
class Answer(models.Model):
answerid = models.PositiveIntegerField(primary_key=True)
content = models.CharField(max_length=128)
question = models.ForeignKey(Question)
I want to find the questions, which have the answer. How can I do it? Please help me to solve this problem. Thank you so much.
如果你试图找到所有回答问题:
Question.objects.filter(answer__isnull=False).distinct()
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