This is a basic tutorial on how to get CodeIgniter facebook application on nginx (with the gotchas). The nginx configuration would be like the following

server { listen 80; server_name; location ~ /index.php/ { root /home/production/blah; index index.html index.htm index.php; include conf/fcgi.conf; fastcgi_param SCRIPT_FILENAME /home/production/fb_apps/quickdate/index.php; fastcgi_pass; } access_log /usr/local/nginx/logs/blah.access_log; error_log /usr/local/nginx/logs/blah.error_log; }

The critical line is the fastcgi_params parameter, that changes the whole game. In the code Igniter application you need to add the following file in [app]/system/application/libraries/FB_controller.php

facebook = new Facebook($this->API_KEY, $secret); $this->uid = $this->facebook->require_login(); } } ?>

There are some significant changes in the configuration which is at [app]/system/application/config/config.php

$config[‘’enable_query_strings’’] = TRUE; $config[‘‘subclass_prefix’’] = ‘‘FB_’’; $config[‘‘uri_protocol’’] = “REQUEST_URI”;

Now in the application you should write controllers extending the above defined class , for example I modified the welcome controller.

facebook->api_client->Users_isAppUser()) { $this->facebook->redirect($this->facebook->get_add_url()); return; } } catch (Exception $x) { // Clear cookies for your application and redirect them to a login prompt $this->facebook->expire_session(); $facebook->redirect($this->facebook->get_login_url()); } } function index() { } }

Fire this up and see it all running smoothly, this is basically compiled from all kinds of forum over the internet. Thought it will be useful for someone. In case of any issues contact me at [email protected].