如何使用方法PUT Django的REST的架構更新

Question

當提示PUT（更新）出這個錯誤

不能實例序列化實例時調用.is_valid（）因爲沒有數據=關鍵字參數傳遞。 我的觀點：

def get_serializer(self, *args, **kwargs): 
      queryset = Producer.objects.get(pk=self.kwargs['pk']) 
      if self.request.user.is_authenticated: 
       return ProducerSerializer(queryset, 
              fields=('short_info',)) 

      if self.request.method == 'PUT' or self.request.method == 'PATCH': 
       return ProducerUpdateSerializer 

      else: 
       return ProducerSerializer(queryset, 
              fields=('website', 'phone', 'email', 'contacts', 'short_info')) 

     def get_queryset(self): 
      return Producer.objects.filter(pk=self.kwargs['pk']) 

我的串行

class DynamicFieldsModelSerializer(serializers.ModelSerializer): 

    def __init__(self, *args, **kwargs): 
     # Don't pass the 'fields' arg up to the superclass 
     fields = kwargs.pop('fields', None) 

     # Instantiate the superclass normally 
     super(DynamicFieldsModelSerializer, self).__init__(*args, **kwargs) 

     if fields is not None: 
      for i in fields: 
       print self.fields.pop(i) 


class ProducerSerializer(DynamicFieldsModelSerializer): 
    tags = TagListSerializerField() 
    categories = serializers.StringRelatedField(many=True) 
    contacts = ProducerContactSerializer(many=True) 
    country = CountryField(country_dict=True) 
    business_type = ChoicesSerializerField() 

    class Meta: 
     model = Producer 
     fields = ('id', 'business_type', 'logo', 'name', 'slug', 'country', 'city', 
        'street_address', 'zip', 'short_info', 'info', 'website', 
        'categories', 'tags', 'contacts', 'email', 'phone') 


class ProducerUpdateSerializer(serializers.ModelSerializer): 
    tags = TagListSerializerField() 
    categories = serializers.StringRelatedField(many=True) 

    class Meta: 
     model = Producer 
     fields = ('id', 'business_type', 'logo', 'name', 'slug', 'country', 'city', 
        'street_address', 'zip', 'short_info', 'info', 'website', 'categories', 'tags') 

實例時提示爲無數據=關鍵字參數傳遞PUT（更新）出這個錯誤

不能調用.is_valid（）的時候串行器實例。

Answer 1

首先，我懷疑你的get_serializer對於PUT是正確的。它應該在返回一個類時返回一個實例。

至於你的問題，錯誤信息很清楚。實例化時，您沒有將data=request.data傳遞給序列化程序。文檔包含an example如何做到這一點。