MVC (CodeIgniter) Question

Hi,

I'm hoping to improve the security of a site that I'm been creating over the past few days  in order to learn codeignter.

I wanted to create a function that will check in person accessing the page in question is logged in and if not deny them access.

I'm unsure however of what the best approach would be to do this.

Should I add the new function in each model?  Should I have a seperate model just for security that I would load each time?

Is there a better way of doing this that I haven't thought of?

Your input would be greatly appreciated!

Thanks
codeigniternoobAsked:
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Ray PaseurCommented:
I would be surprised if CodeIgniter did not have this functionality built in.

If you want to learn the design pattern for PHP authentication, this article will show you.
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/A_2391-PHP-login-logout-and-easy-access-control.html
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Ray PaseurCommented:
Yep, a quick Google search shows that there are lots of ways to extend CodeIgniter with login functionality.  However as you look at these, remember that you are looking at open-source code that is not always up-to-date.  I noticed an ereg() in one of these.  Since that function is going away, I would test carefully with error_reporting(E_ALL) before depending on "free code" that I found on the internet!

http://codeigniter.com/wiki/Simplelogin
http://net.tutsplus.com/articles/news/codeigniter-from-scratch-day-6-login/
http://jrtashjian.com/2009/02/simple-login-form-with-codeigniter-2/
http://www.izzycode.com/codeigniter/codeigniter-login-model-example.html
http://heybigname.com/2009/11/09/developing-a-website-with-code-igniter-part-3-the-login-process/

Best of luck with it, ~Ray
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