问题描述
class Trip(models.Model):
name = CharField(max_length=500)
rating = GenericRelation(ratings,related_query_name='trips')
class rating(models.Model):
value = models.IntegerField()
comment = models.TextField()
created_on = models.DateTimeField(_("Created on"),auto_Now_add=True)
这就是我填充
的方式 trip = Trip.objects.first()
ct = ContentType.objects.get_for_model(trip)
rating = ratings.objects.create(
value = data['value'],comment = data['comment'],content_type = ct,content_object = trip,)
但是问题是当我查询数据以进行如下评级时:
trip = Trip.objects.first()
review = trip.rating.all()
for r in review:
print(r.created_on)
以下错误通过我:
AttributeErrorTraceback (most recent call last)
<ipython-input-10-632676dd4f8f> in <module>
3 review = trip.rating.all()
4 for r in review:
----> 5 print(r.created_on)
AttributeError: 'ratings' object has no attribute 'created_on'
trip = Trip.objects.first()
review = trip.rating.all()
for r in review:
print(r.commnet)
它确实有效,它也返回值和created_by,就像r.value
和r.created_by
但是问题是created_at
怎么了?另外,当我添加新字段,例如test_test = models.CharFeled..blab bla字段时,它们未获取并触发相同的错误,例如此类属性不存在。我的问题是为什么评论和价值在回头,为什么其他不回头?
解决方法
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