Hence, it can accommodate larger amounts of data. On the other hand, the session data is stored on the server-side, i.e., a database or a session store. If we did that, a hacker could easily get hold of that information and steal personal data for malicious activities. A cookie cannot store any sort of user credentials or secret information. In a cookie, you can’t store a lot of data. The browser attaches cookies to every HTTP request that is sent to the server. We need to answer the question of what is the difference between a session and a cookie.Ī cookie is a key-value pair that is stored in the browser. The difference between session and cookieĪs you might have noticed, we’ve introduced a new concept called a cookie. This will make HTTP protocol connections stateful. We use this session ID and look up the session saved in the database or the session store to maintain a one-to-one match between a session and a cookie. This cookie will be sent on every request to the server. This cookie will contain the session’s unique id stored on the server, which will now be stored on the client. When the server responds to the client, it sends a cookie. When the client makes a login request to the server, the server will create a session and store it on the server-side. In session-based authentication, the user’s state is stored in the server’s memory or a database. A session will contain some unique data about that client to allow the server to keep track of the user’s state. HTTP is a stateless protocol which means at the end of every request and response cycle, the client and the server forget about each other. Get_expire_at_browser_close() − Returns either True or False, depending on whether the user’s session cookies have expired when the user’s web browser is closed.A website is based on the HTTP protocol. Get_expiry_date() − Returns the date this session will expire.Ĭlear_expired() − Removes expired sessions from the session store. Get_expiry_age() − Returns the number of seconds until this session expires. Set_expiry ( value) − Sets the expiration time for the session. USE SESSION HOW TOWe have seen how to store and access a session, but it's good to know that the session attribute of the request have some other useful actions like − Some More Possible Actions Using Sessions If you access /myapp/connection again, you will get the login form (screen 1). Now, if you access /myapp/logout, you will get the following page − Url(r'^logout/', 'logout', name = 'logout'), Return HttpResponse("You are logged out.")Īnd pair it with a logout URL in myapp/url.py Let's create a simple logout view that erases our cookie. Now if you try to access /myapp/connection again, you will get redirected to the second screen directly. When accessing /myapp/connection, you will get to see the following page −Īnd you will get redirected to the following page − Url(r'^connection/','formView', name = 'loginform'), Now let us change the url.py file to change the url so it pairs with our new view −įrom import patterns, urlįrom import TemplateView Return render(request, 'loggedin.html', ) Basically, let's make our login system we used in Django Cookies handling more secure, by saving cookies server side.įor this, first lets change our login view to save our username cookie server side − Let us save the username in a cookie so, if not signed out, when accessing our login page you won’t see the login form. We have built a simple login system before (see Django form processing chapter and Django Cookies Handling chapter). Let's create a simple sample to see how to create and save sessions. When session is enabled, every request (first argument of any view in Django) has a session (dict) attribute. '.SessionMiddleware'īy default, Django saves session information in database (django_session table or collection), but you can configure the engine to store information using other ways like: in file or in cache. This should be done while creating the project, but it's always good to know, so MIDDLEWARE_CLASSES should have − In Django, enabling session is done in your project settings.py, by adding some lines to the MIDDLEWARE_CLASSES and the INSTALLED_APPS options. Sessions are also useful to avoid cases where the user browser is set to ‘not accept’ cookies. Sessions are used to abstract the receiving and sending of cookies, data is saved on server side (like in database), and the client side cookie just has a session ID for identification. This leads to lot of security holes depending on the importance of the data you want to save.įor security reasons, Django has a session framework for cookies handling. We have seen before that we can use client side cookies to store various data useful for our web app. As discussed earlier, we can use client side cookies to store a lot of useful data for the web app.
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