Json 如何获取主键相关字段嵌套序列化程序django rest框架的所有值

我有以下型号：

class SearchCity(models.Model):
    city = models.CharField(max_length=200)

class SearchNeighborhood(models.Model):
    city = models.ForeignKey(SearchCity, on_delete=models.CASCADE)
    neighborhood = models.CharField(max_length=200)

然后是以下嵌套序列化程序：

class CityNeighborhoodReadOnlySerializer(serializers.ModelSerializer):
    searchneighborhood_set = serializers.PrimaryKeyRelatedField(many=True, read_only=True)

    class Meta:
        model = SearchCity
        fields = ('city','searchneighborhood_set')
        read_only_fields =('city', 'searchneighborhood_set')

与视图配对：

class CityNeighborhoodView(ListAPIView):
    queryset = SearchCity.objects.all()
    serializer_class = CityNeighborhoodReadOnlySerializer

当我调用api时，我得到以下信息：

city: "Chicago"
    searchneighborhood_set: 
      0: 5 
      1: 4
      2: 3
city: "New York"
    searchneighborhood_set:
      0: 8
      1: 7
      2: 6

我只是得到相关对象的主键。这很好，我需要它，但我还需要

邻居的名字，我怎么才能得到它

编辑：

这个问题可能会有一些启发。但是，他们没有使用与主键相关的序列化程序，所以我的问题是（如果这当然有效，那么与主键相关的序列化程序的意义是什么

答案是不要使用
primarykeyrelatedserializer
，而是使用序列化程序来序列化
SearchNeighborary
对象

我改变了这一点：

class CityNeighborhoodReadOnlySerializer(serializers.ModelSerializer):
    searchneighborhood_set = serializers.PrimaryKeyRelatedField(many=True, read_only=True)

    class Meta:
        model = SearchCity
        fields = ('city','searchneighborhood_set')
        read_only_fields =('city', 'searchneighborhood_set')

为此：

class CityNeighborhoodReadOnlySerializer(serializers.ModelSerializer):
    searchneighborhood_set = SearchNeighborhoodSerializer(many=True, read_only=True)

    class Meta:
        model = SearchCity
        fields = ('city','searchneighborhood_set')
        read_only_fields =('city', 'searchneighborhood_set')

从这个输出：

city: "Chicago"
    searchneighborhood_set: 
      0: 5 
      1: 4
      2: 3
city: "New York"
    searchneighborhood_set:
      0: 8
      1: 7
      2: 6

我想要的是：

city: Chicago
    searchneighborhood_set:
         0: {pk: 5, neighborhood: 'River North}
    ....

但是现在出现了一个新问题，主键实现的序列化程序有什么意义