Django的REST框架錯誤：{ 「用戶」： 「這是必須填寫」]

Question

當發佈這樣的：

curl -X POST -H "Authorization: Token sometoken" -d "url=someurl" 127.0.0.1:8000/create/ 

我得到的錯誤：

{"user":["This field is required."] with the ItemSerializer,

我看到其他職位在談論如何使用perform_create，我試圖用來保存用戶對象，但它不起作用的原因。當用戶這樣定義Perform_create工作：

user = serializers.CharField(
    default=serializers.CurrentUserDefault() 
) 

但我想使用的用戶對象，不僅CharField存儲的用戶名

串行器：

class UserDetailsSerializer(serializers.ModelSerializer): 
    class Meta: 
    model = UserModel 
    fields = ('pk', 'username', 'email', 'first_name', 'last_name') 
    read_only_fields = ('email',) 


class CategorySerializer(serializers.ModelSerializer): 
    class Meta: 
    model = Category 
    fields = ['cat'] 

class CommentSerializer(serializers.HyperlinkedModelSerializer): 
     class Meta: 
     model = Comment 
     fields = [ 
      'comment', 

     ] 

class ItemSerializer(serializers.HyperlinkedModelSerializer): 
    user = UserDetailsSerializer() 
    category = CategorySerializer(many=True) 
    thecomments = CommentSerializer(many=True) 
    timestamp = serializers.SerializerMethodField('get_mytimestamp') 

    def get_mytimestamp(self, obj): 
     return time.mktime(datetime.datetime.now().timetuple()) 

    class Meta: 
     model = Item 

     fields = [ 
     "url", 
     "user", 
     "timestamp", 
     "categories", 
     "thecomments", 
    ] 

型號：

查看：

class ItemCreateAPIView(generics.CreateAPIView): 
    serializer_class = ItemSerializer 

    def perform_create(self, serializer): 
     serializer.save(user=self.request.user) 

解決方案：

串行創建項目：

views.py

class ItemCreateAPIView(generics.CreateAPIView): 
    serializer_class = CreateSerializer 

    def perform_create(self, serializer): 
     serializer.save(user=self.request.user) 

後：

curl -X POST -H "Authorization: Token sometoken" -d "url='someurl'" 127.0.0.1:8000/createitem/ 

Answer 1

class ItemSerializer(serializers.HyperlinkedModelSerializer): 
    user = UserDetailsSerializer() 
    category = CategorySerializer(many=True) 
    thecomments = CommentSerializer(many=True) 
    timestamp = serializers.SerializerMethodField('get_mytimestamp') 

    def get_mytimestamp(self, obj): 
     return time.mktime(datetime.datetime.now().timetuple()) 

    class Meta: 
     model = Item 

     fields = [ 
     "url", 
     "user", 
     "timestamp", 
     "categories", 
     "thecomments", 
     ] 
     extra_kwargs = {'user': {'required': False}} 

將extra_kwargs = {'user': {'required': False}}添加到您的序列化程序中Meta