标签:存在 focus return lte 资源 queryset 阶段 bsp books
urlpatterns = [ # 资源books接口的设计 url(r‘^books/$‘, views.BookAPIView.as_view()), # 群查、单增 url(r‘^books/(?P<pk>\d+)/$‘, views.BookAPIView.as_view()), # 单查、单删、单(整体|局部)改 ]
from rest_framework.views import APIView from rest_framework.response import Response from . import models class BookAPIView(APIView): def _multiple_get(self): # 不能返回,数据是QuerySet[Obj, Obj],也不能强制转换list # return list(models.Book.objects.all()) # QuerySet[dict, dict] # print(models.Book.objects.values(‘name‘, ‘price‘)) # QuerySet[tuple, tuple] # print(models.Book.objects.values_list(‘name‘, ‘price‘)) return Response(list(models.Book.objects.values(‘name‘, ‘price‘))) def _single_get(self, pk): # return Response(models.Book.objects.filter(pk=pk).values(‘name‘, ‘price‘).first()) # 开发阶段建议能用try的地方,不要使用if判断 try: return Response(models.Book.objects.values(‘name‘, ‘price‘).get(pk=pk)) except: return Response(‘资源不存在‘) # 单查、群查 def get(self, request, *args, **kwargs): pk = kwargs.get(‘pk‘) if pk: # 单查逻辑 return self._single_get(pk) else: # 群查逻辑 return self._multiple_get()
标签:存在 focus return lte 资源 queryset 阶段 bsp books
原文地址:https://www.cnblogs.com/baohanblog/p/12324293.html