02: django Advanced articles

1.1 cookie

　　1, cookie Introduction

　　　　　　1. cookie essence is the client hard disk to store key-value pairs, the use of this feature can be used for user authentication

　　　　　　2. For example: { "username": "dachengzi"} # url to access the information again will carry over

　　2, the front end of cookie operation
　　　　　　instructions: using the following method of operation must be introduced into the cookie jquery.cookie.js

　　　　　　1. Get distal cookie value:  var .cookie V = $ ( 'per_page_count'); 

　　　　　　2. The front end of the cookie value:  $ .cookie ( 'per_page_count', V); 

　　3, back-end operations cookie

　　　　　　说明： response = HttpResponse(...)  或  response ＝ render(request, ...)

　　　　　　1. Set rear cookie value:   response.set_cookie ( 'username', "zhangsan")

　　　　　　2. After the rear end to the cookie value:  request.COOKIES.get ( 'username')