Codeigniter, Facebook and Facebook's login "code" query variable -

we're trying log users our codeigniter app php sdk, we're using segmented uris , have no need query strings we've opted not use them. 1 of problems seems ci , facebook passing redirect_uri parameter getloginurl() e.x.

public function login(){     if(!$this->user){         $this->data['loginurl'] = $this->facebook->getloginurl(array(             'redirect_uri' => 'http://appdomain.com/users/login'         ));         $this->load->view('users/login', $this->data);     }else{         redirect('home/index');     } } 

after logging facebook, uri returned has code query variable ci doesn't like, breaks routing , displays blank page.

http://appdomain.com/users/login/?code=dsfeoilkjd983274893hflksdfhhewhkdsiue8... 

even if add $route['users/login/(:any)'] = 'users/login'; routes.php, i'm still redirected blank page. since using getaccesstoken() make api calls on user's behalf, don't need use code query var exchange access token. possible remove query string completely, possibly in my_controller, before routing method/action?

the way able bypass problem passing default controller redirect_uri parameter, else won't route correct uri , displays blank page.

any suggestions appreciated!

you can remove query string .htaccess. not sure if work, should if function actual redirect i.e. login process sending user http://appdomain.com/users/login/?code=dsfeoilkjd983274893hflksdfhhewhkdsiue8... seems case.

this .htaccess (in addition removing index.php) strip query string , send url http://appdomain.com/users/login/?code=dsfeoilkjd983274893 http://appdomain.com/users/login/:

rewritecond $1 !^(index\.php|images|robots\.txt)  rewriterule ^(.*)$ /index.php/$1 rewritecond %{query_string} !="" rewriterule ^(.*)$ $1? [r,l] 

the r on last line seemingly optional. if leave out, url still display querystring in url, won't parsed. if leave in, not display querystring in url.