[英]django - key error in serializer with foreign key models
我檢查了所有相關問題,但仍然想知道是否存在更新的答案。
因此,我有一個具有三個外鍵的模型,接下來,當我嘗試使用該模型獲取響應時,它們在List中的鍵會附加“ _id”-因此,每當我進行序列化時 ,都會得到“ KeyError at”錯誤。
錯誤:
/ api / v1 / user / skill / upvotes / 1'skill'處的KeyError
型號:
class UserSkillUpvotes(models.Model):
unique_together = (('user_skill', 'upvote_by'),)
skill = models.ForeignKey('Skill',on_delete=models.CASCADE , related_name='all_upvote_for_user_skill')
upvote_by = models.ForeignKey('auth.User',on_delete=models.CASCADE , related_name='all_upvote_by_user')
upvote_for = models.ForeignKey('auth.User',on_delete=models.CASCADE , related_name='all_upvote_for_user')
序列化器:
class UserSkillUpvotesSerializer(serializers.ModelSerializer):
class Meta:
model=UserSkillUpvotes
fields='__all__'
查看:如果request.method =='GET':
try:
user_skill_upvotes = list(UserSkillUpvotes.objects.filter(upvote_for=pk).all().values()) # get all upvotes on skills of the requested user
except (UserSkillUpvotes.DoesNotExist,User.DoesNotExist) as e:
return HttpResponse(status=404)
serializer = UserSkillUpvotesSerializer(user_skill_upvotes,many=True)
return Response(serializer.data)
控制台錯誤-
File "C:\code\django\wantedly\src\wantedly_webapp\views\AllViews.py", line 75, in user_skill_upvotes
return Response(serializer.data)
我通過不從Object獲取所有值來解決了我的問題。 學習了ORM的基礎知識:)
在我看來,我將此行更改為
user_skill_upvotes = list(UserSkillUpvotes.objects.filter(upvote_for=pk).all().values()) # get all upvotes on skills of the requested user
對此
user_skill_upvotes = list(UserSkillUpvotes.objects.filter(upvote_for=pk))
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