如何在 django rest 框架中使用 hyperlinkedModelSerializer答案

【问题标题】：How to use hyperlinkedModelSerializer in django rest framework如何在 django rest 框架中使用 hyperlinkedModelSerializer
【发布时间】：2020-10-22 04:58:26
【问题描述】：

如何在 django rest framework 中使用 hyperlinkedModelSerializer 我的输出显示：

HyperlinkedRelatedField 需要序列化程序上下文中的请求。实例化序列化器时添加context={'request': request}。

代码如下：

serailizers.py

#Program Serializer

class ProgramSerializer(serializers.ModelSerializer):
    class Meta:
        model = Program
        fields = '__all__'

#Program MiniSerializer

class ProgramMiniSerializer(serializers.HyperlinkedModelSerializer):

 programCode = serializers.HyperlinkedRelatedField(many=True,view_name='program-detail', read_only=True)

    class Meta:
        model = Program
        fields = ('programCode', 'pro_name', 'url', 'DepartmentID')

viewsets.py

class ProgramViewSet(viewsets.ModelViewSet):
    queryset = Program.objects.all()
    serializer_class = ProgramSerializer
    filterset_class = ProgramFilter
    filter_backends = (django_filters.rest_framework.DjangoFilterBackend,)
    __basic_fields = ( 'programCode', 'pro_name','pro_shortForm', 'DepartmentID')
    filter_backends = (filters.DjangoFilterBackend, SearchFilter, OrderingFilter)
    filter_fields = ('programCode', 'DepartmentID')
    search_fields = ('DepartmentID')
    

    def list(self, request,  *args, **kwargs):
        programs = Program.objects.all()   
        serializer = ProgramMiniSerializer(programs, many=True)
        return Response(serializer.data)

    def get_queryset(self): 
        programs = Program.objects.all()
        return programs

    def retrieve(self, request,  *args, **kwargs):
        params=kwargs
        print(params['pk'])
        # programs = Program.objects.all()
        programs = Program.objects.filter(DepartmentID = params['pk'])
        serializer = ProgramMiniSerializer(programs, many=True)
        return Response(serializer.data)

【问题讨论】：

能否请您在使用 ProgramMiniSerializer 的地方添加视图？
是的，我已经添加了使用 ProgramMiniSerializer 的 viewset.py 文件

标签： django filter django-rest-framework

【解决方案1】：

在初始化序列化程序的list 和retrieve 方法中，您需要将上下文传递给它，如下所示：

serializer = ProgramMiniSerializer(
    programs, 
    many=True, 
    context={
        'request': request,
    },
)

【讨论】：