完成了viewset， 自定义筛选，搜索， 排序的学习

apps/goods/urls.py

@@ -16,7 +16,17 @@ Including another URLconf
 """
 from django.contrib import admin
 from django.urls import path
-from apps.goods import views, views_api, views_apiview, views_mixin
+from apps.goods import views, views_api, views_apiview, views_mixin, views_generics, views_viewset
+
+goods_list = views_viewset.GoodsViewSet.as_view({
+    'get': 'list',
+    'post': 'create',
+})
+goods_detail = views_viewset.GoodsViewSet.as_view({
+    'get': 'retrieve',
+    'put': 'update',
+    'delete': 'destroy',
+})
 
 urlpatterns = [
     # path('cate_index/', views.GoodCateView.as_view(), name='cate_index'),
@@ -32,4 +42,8 @@ urlpatterns = [
     path('goods_apiview/<int:id>/', views_apiview.GoodsAPIView.as_view()),
     path('goods_mixin/', views_mixin.GoodsMixin.as_view()),
     path('goods_mixin/<pk>/', views_mixin.GoodsDetailMixin.as_view()),
+    path('goods_generics/', views_generics.GoodsGenerics.as_view()),
+    path('goods_generics/<pk>/', views_generics.GoodsDetailGenerics.as_view()),
+    path('goods_viewset/', goods_list),
+    path('goods_viewset/<pk>/', goods_detail),
 ]

apps/goods/views_generics.py

@@ -0,0 +1,14 @@
+from rest_framework import generics
+
+from apps.goods.models import Goods
+from apps.goods.serializers import GoodsSerializers
+
+
+class GoodsGenerics(generics.ListCreateAPIView):
+    queryset = Goods.objects.all()
+    serializer_class = GoodsSerializers
+
+
+class GoodsDetailGenerics(generics.RetrieveUpdateDestroyAPIView):
+    queryset = Goods.objects.all()
+    serializer_class = GoodsSerializers

apps/goods/views_mixin.py

@@ -2,12 +2,12 @@ from rest_framework import mixins
 from rest_framework import generics
 
 from apps.goods.models import Goods
-from apps.goods.serializers import GoodsSerializers
+from apps.goods.serializers import GoodsSerializers, GoodsModelSerializer
 
 
 class GoodsMixin(mixins.ListModelMixin, mixins.CreateModelMixin, generics.GenericAPIView):
-    queryset = Goods.objects.all()
-    serializer_class = GoodsSerializers
+    queryset = Goods.objects.all().order_by('-id')[:3]
+    serializer_class = GoodsModelSerializer
 
     # GoodsSerializers(queryset, many=True)
 
@@ -21,7 +21,7 @@ class GoodsMixin(mixins.ListModelMixin, mixins.CreateModelMixin, generics.Generi
 class GoodsDetailMixin(mixins.RetrieveModelMixin, mixins.UpdateModelMixin, mixins.DestroyModelMixin,
                        generics.GenericAPIView):
     queryset = Goods.objects.all()
-    serializer_class = GoodsSerializers
+    serializer_class = GoodsModelSerializer
 
     def get(self, request, *args, **kwargs):
         return self.retrieve(request, *args, **kwargs)

apps/goods/views_viewset.py

@@ -0,0 +1,29 @@
+from rest_framework import viewsets
+from rest_framework import mixins
+from django_filters.rest_framework import DjangoFilterBackend
+from rest_framework import filters
+
+from apps.goods.models import Goods
+from apps.goods.serializers import GoodsSerializers
+from common.mypagination import MyPagination
+from common.myfilter import MyFilter
+
+
+class GoodsViewSet(mixins.ListModelMixin,
+                   mixins.RetrieveModelMixin,
+                   mixins.CreateModelMixin,
+                   mixins.UpdateModelMixin,
+                   mixins.DestroyModelMixin,
+                   viewsets.GenericViewSet):
+    queryset = Goods.objects.all()
+    serializer_class = GoodsSerializers
+    # 分页
+    # pagination_class = MyPagination  #针对viewset的分页设置，也可以走全局
+    # 筛选
+    filter_backends = (DjangoFilterBackend, filters.SearchFilter, filters.OrderingFilter)
+    # filter_backends = (DjangoFilterBackend,)
+    filterset_class = MyFilter
+    # 搜索
+    search_fields = ('name', 'price')
+    # 排序
+    ordering_fields = ('id', 'name', 'price')

common/myfilter.py

@@ -0,0 +1,13 @@
+import django_filters
+from django_filters import rest_framework as filters
+from apps.goods.models import Goods
+
+
+class MyFilter(filters.FilterSet):
+    name = filters.CharFilter(field_name='name', lookup_expr='icontains')
+    max_price = filters.NumberFilter(field_name='price', lookup_expr='lte', label='最高价格')
+    min_price = filters.NumberFilter(field_name='price', lookup_expr='gte', label='最低价格')
+
+    class Meta:
+        model = Goods
+        fields = ('name', 'max_price', 'min_price')

common/mypagination.py

@@ -0,0 +1,8 @@
+from rest_framework.pagination import PageNumberPagination
+
+
+class MyPagination(PageNumberPagination):
+    page_size = 2
+    max_page_size = 5
+    page_size_query_param = 'size'
+    page_query_param = 'page'

myshop_back/settings.py

@@ -11,9 +11,10 @@ https://docs.djangoproject.com/en/4.2/ref/settings/
 """
 
 from pathlib import Path
-from rest_framework.renderers import JSONRenderer
 import sys, os
 
+import rest_framework.filters
+
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
 
@@ -45,6 +46,7 @@ INSTALLED_APPS = [
     'ckeditor',
     'ckeditor_uploader',
     'rest_framework',
+    'django_filters'
 ]
 
 MIDDLEWARE = [
@@ -146,9 +148,15 @@ auth.User.groups: (fields.E304) Reverse accessor 'Group.user_set' for 'auth.User
 AUTH_USER_MODEL = 'user.Myuser'
 
 REST_FRAMEWORK = {
+    # 设置全局渲染模板
     'DEFAULT_RENDERER_CLASSES': (
         # 'rest_framework.renderers.JSONRenderer',
         'apps.goods.drf_customer_renderer.CustomRenderer',
         'rest_framework.renderers.BrowsableAPIRenderer',
-    )
+    ),
+    # 设置全局分页设置
+    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
+    'PAGE_SIZE': 5,
+    # 设置筛选模板
+    'DEFAULT_FILTER_BACKENDS': ('django_filters.rest_framework.DjangoFilterBackend',),
 }