Example of how to use cookies in Django and djangocookie

Example of how to use cookies in Django and djangocookie

Preface

The emergence of various Internet-based service systems, the establishment of commercial sites or relatively well-functional personal sites, often need to record some of the visitor's information; forum as one of the products of Internet development, it plays an increasingly important role in the Internet and is one of the main places for users to obtain, exchange, and transmit information, forums often need to record some basic information of visitors (such as identity identification numbers, passwords, The way users shop on a Web site or the number of times they visit the site ). Currently, it is recognized that cookies and Session technologies are used to record some basic information of visitors.

Next, let's take a look at the basic usage of cookies in Django. If you don't talk about them much, let's take a look at the detailed introduction.

1. Brief Introduction

(1) set Cookies

response.set_cookie("cookie_key","value")

(2) obtain Cookies

value = request.COOKIES["cookie_key"]

(3) Delete Cookies

response.delete_cookie("cookie_key",path="/",domain=name)

(4) Cookies

if "cookie_name" in request.COOKIES :

(5)response.set_cookie()Pass some optional parameter descriptions

2. Example

2.1 set Cookies

Login_user = models. user. objects. get (username = username, password = password) # data storage in mongodb # print (login_user ["username"]) # The account and password are correct, cookie save logon status # Get the corresponding object response = redirect (reverse ("blog: index") # Set cookieresponse. set_cookie ("blog_username", login_user ["username"], 604800) # The expiration time unit is s (set to 7 days here) response. set_cookie ("blog_password", login_user ["password"], 604800)

2.2 detect and obtain Cookies

Def index (request): # Check whether cookies exist if "blog_username" in request. COOKIES: # obtain cookies login_username = request. COOKIES. get ("blog_username") login_password = request. COOKIES. get ("blog_password") # obtain the Login User Information login_user = models. user. objects. get (username = login_username, password = login_password) # return to the page after successful logon return render (request, "blog/index.html", {"login_user": login_user}) else: # return render (request, "blog/index.html ")

2.3 Delete Cookies

# Logout view function def logout (request): response = redirect (reverse ("blog: index") response. delete_cookie ("blog_username") response. delete_cookie ("blog_password") return response

Summary

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