Question

I have a web application having three pages, one is login page, second is contact page, and third is chat page. The natural sequence to traverse is one to second and from second to third.

Login (using our web service) is required to open second and third page. Now we have a requirement that we want to open third page directly from a third party application.

So, suppose if third page is requested from browser and on the same browser login (using first page) has been made. Then we need to directly show the third page otherwise show the user first page i.e. login page.

The requirement is similar as required facebook page can be opened by clicking an link from gmail page, if facebook user has done login, he can see the desired page directly.

Answer 1

When i wrote this functionality into my last project, i generally did the following:

1. try to load the page
2. at the beginning of any page load, the first thing that is checked is login status
3. if loggedIn == false, then you’re going to save the current url and redirect to login with an argument of the previous url
   (mysite.com/login?url=/something/page3)
4. then when they submit the new login information, upon success you can simply grab the value of your url argument, and do a redirect to
   that value.

However, in order to do this, you probably need the following problems to already be solved: your page framework, modular code on a per page basis (mvc usually helps for this), a login functionality that can check login status easily, and more