Django and drf source view resolution

0902 self-summary

Django and drf source view resolution

Analysis of a native Django CBV Source:. View

"""
1）as_view()是入口，得到view函数地址
2）请求来了调用view函数，内部调用dispatch函数完成请求分发
3）dispatch函数将请求方式映射成视图类的同名方法，完成请求的处理，得到相应
4）再将相应的结果一层层返回
"""

Two .drf CBV source code analysis: APIView

"""
1）as_view()是入口，得到view函数地址，在范围view函数地址时局部禁用csrf认证
2）请求来了调用view函数，内部调用(APIView类的)dispatch函数完成请求分发
3）dispatch函数 二次封装request、完成三大认证后，再将请求方式映射成视图类的同名方法，完成请求的处理，得到相应，再对相应做渲染处理
4）再将相应的结果一层层返回
"""

Dealt .APIView do

• as_view: 就干了一件事，禁用csrf认证

• dispatch:
  • 1) Secondary Packaging request
  • 2) Three certification

Four .drf local and global rendering rendering

We looked through the source code to render the content is JSONRendererstillBrowsableAPIRenderer

BrowsableAPIRenderer with the introduction JSONRenderer

from rest_framework.renderers import JSONRenderer from rest_framework.renderers import BrowsableAPIRenderer

• Local Settings

  • In class we add the basis for the definition APIView of renderer_classes = [JSONRenderer]this page js data does not appear to render the display only

  E.g

  class UserAPIView(APIView):
    renderer_classes = [JSONRenderer]
  
      def get(self, request, *args, **kwargs):
          print(request.query_params)
          data = {
              'status': 0,
              'msg': 'get ok',
              'results': [],
              'token': '123.12321.231'
          }
          return Response(
              data=data,
              status=status.HTTP_200_OK,
              headers={'Token': '123as.masd21.asd213sd'},
              content_type='application/json'  # 默认就是application/json
          )

• Global Settingssetting

  # drf配置
  REST_FRAMEWORK = {
      # 响应的渲染模块
      'DEFAULT_RENDERER_CLASSES': [
          'rest_framework.renderers.JSONRenderer',
          'rest_framework.renderers.BrowsableAPIRenderer',
      ],
      'DEFAULT_PARSER_CLASSES': [
          'rest_framework.parsers.JSONParser',  # 'application/json'
          'rest_framework.parsers.FormParser',  # 'application/x-www-form-urlencoded'
          'rest_framework.parsers.MultiPartParser'  # multipart/form-data
      ],
  }