javascript - HTTP 400 消息 POST 请求错误 - View 和序列化器代码设计不正确

Question

这个问题已经有答案了:

How do I POST urlencoded form data with $http without jQuery? (11 个回答)

已关闭 5 年前。

我不断收到以下错误:

POST http://127.0.0.1:8000/api/creator_signup/ 400 (Bad Request)

每当我尝试将数据从 AngularJS 应用程序发布到 Django 后端时。

在客户端，我通过此代码发布了以下帖子 ( /image/R3M8a.jpg ):

   function registerCreator(creatorData) {
      var url = envService.read('apiUrl') + "/creator_signup/";
      var dataJSON = {
        first_name: creatorData.firstName,
        last_name: creatorData.lastName,
        email: creatorData.email,
        youtube_channel_username: creatorData.username,
        youtube_channel_url: creatorData.url,
        youtube_channel_title: creatorData.title,
        youtube_channel_description: creatorData.description,
        photo: creatorData.photo,
        youtube_channel_start_date: creatorData.startDate,
        keywords: creatorData.keywords,
        no_of_subscribers: creatorData.noOfSubscribers,
        no_of_videos: creatorData.noOfVideos,
        no_of_views: creatorData.noOfViews,
        no_of_likes: creatorData.noOfLikes,
        no_of_dislikes: creatorData.noOfDislikes,
        location: creatorData.location,
        avg_views: creatorData.avgViews,
        gender: 0,
        password: creatorData.password
      };
      var req = {
        method: 'POST',
        url: url,
        headers: {
          'content-type': 'application/x-www-form-urlencoded',
        },
        data: dataJSON
      };
      $log.info(req);
      return ($http(req).then(handleSuccess, handleError));
    }

    function handleSuccess(response) {
      return response.data;
    }

    function handleError(response) {
      if (!angular.isObject(response.data) || !response.data.message) {
        return($q.reject('An unknown error occurred.'));
      }
      return($q.reject(response.data.message));
    }

在服务器端，我有:

urls.py

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^creator/$', views.CreatorList.as_view(), name="creator_list"),
    url(r'^creator/(?P<pk>[^/]+)/', views.CreatorDetail.as_view(), name="creator_detail"),
    url(r'^creator_signup/$', views.CreatorSignup.as_view(), name="creator_signup"),
]

urlpatterns = format_suffix_patterns(urlpatterns)

models.py

class Creator(models.Model):
    """
    Creator model
    """
    id = models.UUIDField(primary_key=True, default=uuid4, editable=False)
    first_name = models.CharField(max_length=255, null=True, default=None)
    last_name = models.CharField(max_length=255, null=True, default=None)
    email = models.CharField(max_length=255, null=True, default=None)
    youtube_channel_username = models.CharField(max_length=255, null=True, default=None)
    youtube_channel_url = models.CharField(max_length=255, null=True, default=None)
    youtube_channel_title = models.CharField(max_length=255, null=True, default=None)
    youtube_channel_description = models.CharField(max_length=255, null=True, default=None)
    photo = models.CharField(max_length=255, null=True, default=None)
    youtube_channel_start_date = models.CharField(max_length=255, null=True, default=None)
    keywords = models.CharField(max_length=255, null=True, default=None)
    no_of_subscribers = models.IntegerField(default=0)
    no_of_videos = models.IntegerField(default=0)
    no_of_views = models.IntegerField(default=0)
    no_of_likes = models.IntegerField(default=0)
    no_of_dislikes = models.IntegerField(default=0)
    location = models.CharField(max_length=255, null=True, default=None)
    avg_views = models.IntegerField(default=0)
    GENDER_CHOICE_UNSET = 0
    GENDER_CHOICE_MALE = 1
    GENDER_CHOICE_FEMALE = 2
    GENDER_CHOICES = (
        (GENDER_CHOICE_UNSET, 'Unset'),
        (GENDER_CHOICE_MALE, 'Male'),
        (GENDER_CHOICE_FEMALE, 'Female'),
    )
    gender = models.IntegerField(choices=GENDER_CHOICES, default=GENDER_CHOICE_UNSET)
    password = models.CharField(max_length=255, null=True, default=None)

    class Meta:
        verbose_name_plural = "Creators"

    def __str__(self):
        return "%s %s" % (self.first_name,self.last_name)

序列化器.py

class CreatorSerializer(serializers.ModelSerializer):
    """
    Class to serialize Creator objects
    """
    class Meta:
        model = Creator
        fields = (
            'first_name', 'last_name', 'email', 'youtube_channel_username', 'youtube_channel_url',
            'youtube_channel_title',
            'youtube_channel_description', 'photo', 'youtube_channel_start_date', 'keywords', 'no_of_subscribers',
            'no_of_videos', 'no_of_views', 'no_of_dislikes', 'location', 'avg_views'
        )
        read_only_fields = 'id'

    def create(self, validated_data):
        return Creator.objects.create(**validated_data)

    def update(self, instance, validated_data):
        pass

class CreatorSignupSerializer(serializers.Serializer):
    """
    Create Creator profile
    """
    first_name = serializers.CharField(required=True, write_only=True)
    last_name = serializers.CharField(required=True, write_only=True)
    email = serializers.CharField(required=True, write_only=True)
    youtube_channel_username = serializers.CharField(required=True, write_only=True)
    youtube_channel_url = serializers.CharField(required=True, write_only=True)
    youtube_channel_title = serializers.CharField(required=True, write_only=True)
    youtube_channel_description = serializers.CharField(required=True, write_only=True)
    photo = serializers.CharField(required=True, write_only=True)
    youtube_channel_start_date = serializers.CharField(required=True, write_only=True)
    keywords = serializers.CharField(required=True, write_only=True)
    no_of_subscribers = serializers.IntegerField(required=True, write_only=True)
    no_of_videos = serializers.IntegerField(required=True, write_only=True)
    no_of_views = serializers.IntegerField(required=True, write_only=True)
    no_of_likes = serializers.IntegerField(required=True, write_only=True)
    no_of_dislikes = serializers.IntegerField(required=True, write_only=True)
    location = serializers.CharField(required=True, write_only=True)
    avg_views = serializers.IntegerField(required=True, write_only=True)

    class Meta:
        model = Creator
        fields = (
            'first_name', 'last_name', 'email', 'youtube_channel_username', 'youtube_channel_url',
            'youtube_channel_title',
            'youtube_channel_description', 'photo', 'youtube_channel_start_date', 'keywords', 'no_of_subscribers',
            'no_of_videos', 'no_of_views', 'no_of_dislikes', 'location', 'avg_views'
        )
        read_only_fields = 'id'

    def create(self, validated_data):
        return Creator.objects.create(**validated_data)

    def update(self, instance, validated_data):
        pass

views.py

class CreatorList(generics.ListAPIView):
    """
    List all Creators
    HTTP: GET
    """
    queryset = Creator.objects.all()
    serializer_class = CreatorSerializer


class CreatorDetail(generics.RetrieveUpdateDestroyAPIView):
    """
    List one Creator
    HTTP: GET
    """
    queryset = Creator.objects.all()
    serializer_class = CreatorSerializer

class CreatorSignup(generics.CreateAPIView):
    """
    Creator signup
    HTTP POST
    """
    queryset = Creator.objects.all()
    serializer_class = CreatorSignupSerializer

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)

    def create(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        return Response(data=serializer.data, status=status.HTTP_201_CREATED)

我认为问题出在views.py和serializers.py代码中，但我不确定如何诊断它。

在客户端，所有内容都在请求之前注销，看起来没问题。

Answer 1

尝试将 'content-type': 'application/x-www-form-urlencoded' 更改为 'content-type': 'application/json' registerCreator 函数。在 Django 端，数据将在 request.body 下提供，因此您的 CreatorSignup View 应如下所示:

import json
...

class CreatorSignup(generics.CreateAPIView):
    """
    Creator signup
    HTTP POST
    """
    queryset = Creator.objects.all()
    serializer_class = CreatorSignupSerializer

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)

    def create(self, request, *args, **kwargs):
        request_body_dict = json.loads(request.body)
        serializer = self.get_serializer(data=request_body_dict)
        serializer.is_valid(raise_exception=True)
        return Response(data=serializer.data, status=status.HTTP_201_CREATED)

在发送之前还需要将 JSON 转换为字符串，因此在 RegisterCreator 函数中，将 data: dataJSON 更改为 data: JSON.stringify(dataJSON )。