view

from rest_framework.viewsets import GenericViewSet
from rest_framework.mixins import ListModelMixin
from rest_framework.filters import SearchFilter
from . import models, serializers

# 搜索课程接口
class SearchCourseViewSet(GenericViewSet, ListModelMixin):
    queryset = models.Course.objects.filter(is_delete=False, is_show=True).all()
    serializer_class = serializers.CourseSerializer

    pagination_class = pagination.PageNumberPagination

    filter_backends = [SearchFilter]
    search_fields = ['name']

1 继承了GenericAPIview必须写

queryset = models.Course.objects.filter(is_delete=False, is_show=True).all()
serializer_class = serializers.CourseSerializer

包括了下列方法

queryset = models.Book.objects.all()
serializer_class = serializer.BookModelSerializer
get_queryset：获取配置的queryset
get_object：单条记录查询时使用，路由中的分组字段必须是pk
get_serializer：获取配置的序列化类    

2 GenericViewSet继承了ViewSetMixin,和GenericAPIView

ViewSetMixin能自动生成路由

3 这五个视图子类必须和GenericAPIview或继承它的类(GenericViewSet)写在一起

from rest_framework.mixins import ...
CreateModelMixin：create方法创建一条
DestroyModelMixin：destory方法删除一条
ListModelMixin：list方法获取所有
RetrieveModelMixin：retrieve获取一条
UpdateModelMixin：update修改一条

因为这5个类中需要queryset和serializer_class作为参数和GenericAPIView的方法

queryset = models.Course.objects.filter(is_delete=False, is_show=True).all()
serializer_class = serializers.CourseSerializer

4 listmodelmixin源码

class ListModelMixin:
    """
    List a queryset.
    """
    def list(self, request, *args, **kwargs):
        queryset = self.filter_queryset(self.get_queryset())

        page = self.paginate_queryset(queryset)
        if page is not None:
            serializer = self.get_serializer(page, many=True)
            return self.get_paginated_response(serializer.data)

        serializer = self.get_serializer(queryset, many=True)
        return Response(serializer.data)