【问题标题】:confusion on which serializer to use to update user profile混淆使用哪个序列化程序来更新用户配置文件
【发布时间】:2017-04-30 03:08:42
【问题描述】:

我有一个供用户更新的配置文件模型。我想为此提供一个休息api。我有一个比平时太大的轮廓模型。我正在努力更新用户配置文件,但我对应该使用哪个序列化程序来更新配置文件感到困惑。这是我到目前为止所做的事情

我为用户和用户配置文件创建了序列化程序。

class ProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = Profile
        fields = ('token', 'user','current_location', 'permanent_location', 'dob',
                    'about_me', 'gender_status', 'create_profile_for', 'marital_status',
                    'height', 'weight', 'body_type', 'complexion',)


class UserSerializer(serializers.ModelSerializer):
  profile = ProfileSerializer(required=True)
  class Meta:
      model = User
      fields = ('id', 'profile', 'username', 'email', 'first_name', 'last_name',)

  def update(self, instance, validated_data):
      # instance = super(UserSerializer, self).update(validated_data)
      profile_data = validated_data.pop('profile')
      #updating user data
      instance.first_name = validated_data.get('first_name', instance.first_name)
      instance.last_name = validated_data.get('last_name', instance.last_name)
      instance.email = validated_data.get('first_name', instance.email)
      #updating profile data
      if not instance.profile:
          Profile.objects.create(user=instance, **profile_data)
      instance.profile.current_location = profile_data.get('current_location', instance.profile.current_location)
      instance.profile.permanent_location = profile_data.get('permanent_location', instance.profile.permanent_location)
      instance.profile.weight = profile_data.get('weight', instance.profile.weight)
      instance.profile.height = profile_data.get('height', instance.profile.height)
      instance.profile.about_me = profile_data.get('about_me', instance.profile.about_me)
      instance.profile.create_profile_for = profile_data.get('create_profile_for', instance.profile.create_profile_for)
      instance.profile.body_type = profile_data.get('body_type', instance.profile.body_type)
      instance.save()
      return instance

这是我的看法

class UserProfile(APIView):
    serializer_class = UserSerializer
    def get(self, request, token=None, format=None):
        """
        Returns a list of profile of user
        """
        reply={}
        try:
            profile_instance = Profile.objects.filter(user=self.request.user)
            if token:
                profile = profile_instance.get(token=token)
                reply['data'] = self.serializer_class(profile).data
            else:
                reply['data'] = self.serializer_class(profile_instance, many=True).data
        except:
            reply['data']=[]
        return Response(reply, status.HTTP_200_OK)

    def post(self, request, token=None, format=None):
        """
        update a profile
        """
        profile=None
        if not token is None:
            try:
                profile = Profile.objects.get(user=request.user, token=token)
            except Profile.DoesNotExist:
                return error.RequestedResourceNotFound().as_response()
            except:
                return error.UnknownError().as_response()
        serialized_data = self.serializer_class(profile, data=request.data, partial=True)
        reply={}
        if not serialized_data.is_valid():
            return error.ValidationError(serialized_data.errors).as_response()
        else:
            profile = serialized_data.save(user=request.user)
            reply['data']=self.serializer_class(profile, many=False).data
        return Response(reply, status.HTTP_200_OK)

我应该如何处理我的用户资料更新?

使用更新功能更新了我的 UserSerializer

更新 Dean Christian Armada 解决方案

class UserProfile(APIView):
    serializer_class = ProfileSerializer
    def get(self, request, token=None, format=None):
        """
        Returns a list of profile of user
        """
        reply={}
        try:
            profile_instance = Profile.objects.filter(user=self.request.user)
            if token:
                profile = profile_instance.get(token=token)
                reply['data'] = self.serializer_class(profile).data
            else:
                reply['data'] = self.serializer_class(profile_instance, many=True).data
        except:
            reply['data']=[]
        return Response(reply, status.HTTP_200_OK)

    def put(self, request, token=None, *args, **kwargs):
        """
        update a profile
        """
        print('token', token)
        if token:
            try:
                profile = Profile.objects.get(token=token)
            except:
                return Response(status=status.HTTP_400_BAD_REQUEST)
        serialized_data = self.serializer_class(profile, data=request.data)
        reply={}
        if serialized_data.is_valid():
            profile = serialized_data.save(user=request.user)
            reply['data'] = self.serializer_class(profile, many=False).data
            return Response(reply, status.HTTP_200_OK)
        else:
            return Response(serialized_data.errors, status.HTTP_400_BAD_REQUEST)

使用您的代码,我得到 This QueryDict instance is immutable 错误

【问题讨论】:

    标签: python django django-rest-framework


    【解决方案1】:

    使用PUT 请求方法更新您当前的代码和情况是一个标准,最好使用ProfileSerializer,因为它有更多字段。另外,在我看来,用户对象中只有三个可以更改的字段,而我认为这三个字段很少更改。

    views.py

    def put(self, request, *args, **kwargs):
        """
        update a profile
        """
        data = request.data
        print data
        try:
            profile = Profile.objects.get(token=data.get('token'))
        except:
            return Response(status=status.HTTP_400_BAD_REQUEST)
        serializer = self.serializer_class(profile, data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status.HTTP_200_OK)
    
        else:
            return Response(serializer.errors,
                            status.HTTP_400_BAD_REQUEST)
    

    serializers.py

    class ProfileSerializer(serializers.ModelSerializer):
        user = serializers.PrimaryKeyRelatedField(read_only=True)
    
        class Meta:
            model = Profile
            fields = ('user', 'height', 'weight', 'token')
    
        def to_internal_value(self, data):
            first_name = data.pop('first_name', None)
            last_name = data.pop('last_name', None)
            data = super(ProfileSerializer, self).to_internal_value(data)
            data['first_name'] = first_name
            data['last_name'] = last_name
            return data
    
        def update(self, instance, validated_data):
            first_name = validated_data.pop('first_name', None)
            last_name = validated_data.pop('last_name', None)
            user_inst_fields = {}
            if first_name:
                user_inst_fields['first_name'] = first_name
            if last_name:
                user_inst_fields['last_name'] = last_name
            if user_inst_fields:
                User.objects.update_or_create(pk=instance.user.id,
                                              defaults=user_inst_fields)
            profile, created = Profile.objects.update_or_create(
                token=instance.token, defaults=validated_data)
            return profile
    

    只需将用户设置为只读以避免验证

    【讨论】:

    • 感谢您的回答。我不想更新用户,而只想更新用户的个人资料,例如体重、身高、肤色、位置等。我如何使用 APIView 来更新?
    • 使用 ProfileSerializer,我可以更新配置文件,但我可以更新用户名、名字、姓氏和电子邮件吗?
    • 我已经用你的代码更新了我的问题。我收到此 QueryDict 实例是不可变的错误,并且在获取时我没有看到在 to_internal_value 中定义的 first_name、last_name。
    • 你能评论一个发送数据的例子吗?
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