django middleware

图片来自网络

 

process_request  -->  url ---> process_view  --> view   ---> process_response 

 

测试

自定义middleware

app01.middlewaretest.py  包含5个方法可以定制

#!/usr/bin/env python3
# -*- coding:utf-8 -*-
from django.utils.deprecation import MiddlewareMixin

class Mid2(MiddlewareMixin):
    def process_request(self,request):
        print('process_requst 2')
        pass
    def process_view(self, request, callback, callback_args, callback_kwargs):
        print('process_view 2')
        pass

    def process_template_response(self, request, response):
        print('process_template 2')
        pass

    def process_exception(self, request, exception):
        print('process_except 2')
        pass

    def process_response(self, request, response):
        print('process_response 2')
        return response


class Mid3(MiddlewareMixin):
    def process_request(self,request):
        print('process_requst 3')
        pass
    def process_view(self, request, callback, callback_args, callback_kwargs):
        print('process_view 3')
        pass

    def process_template_response(self, request, response):
        print('process_template 3')
        pass

    def process_exception(self, request, exception):
        print('process_except 3')
        pass

    def process_response(self, request, response):
        print('process_response 3')
        return response

setting中顺序

MIDDLEWARE = [
    ......
    默认略
    ......
    'app01.middlewaretest.Mid2',
    'app01.middlewaretest.Mid3',
]

view

def index2(request):
    # print(request.id)
    print("in view of fbv...")
    return HttpResponse('a')

日志，正常访问未触发到process_template_response与process_exception

[31/Aug/2018 15:46:56] "GET /index2/ HTTP/1.1" 200 1
process_requst 2
process_requst 3
process_view 2
process_view 3
in view of fbv...
process_response 3
process_response 2