Redirecting users to the facebook app - facebook

Question

If I have an app on facebook that's pulling the content from http://example.com for instance, is there a way I can stop people visting the example.com site and instead redirect them to the facebook app page?

Answer 1

Facebook is sending a POST variable called signed_request when the page is opened within a Fan Page Tab or the Canvas page of your App. Simply check if the POST variable is there and redirect to your App's Canvas page if not ;-)
Here you can read a bit how the signed_request is used inside an App.

Answer 2

Kalvin is close. Props to Kalvin :)
Setup your website to default to index.html
Move the real content of your site from index.html to index-fb.html
In index.html then place either the meta tag for redirection or just javascript for location.href='' script for redirection. The url to redirect to will be in the https://apps.facebook.com/{yourappname} format.
In facebook, update the app settings canvas app url from http://example.com to http://example.com/index-fb.html

Answer 3

1) Pull your content from your website from a subfolder
2) Redirect them from the index.html using a meta tag:
http://www.web-source.net/html_redirect.htm
A better way would be to check if the content is being displayed inside facebook and then redirect but I have no idea how to do that

Answer 4

Edit the .htaccess or conf.d file on your Apache web server (or the rewrite rules in IIS) to give a 301 Permenant Redirect.
Assuming you have Apache:
1.) Log into the box using ssh or some terminal emmulation program
2.) cd /etc/httpd/conf.d
3.) Locate the the configuration file for your site, edit it using vi, emacs, nano, or some text editor
4.) See here on how to write the rewrite rule.