How to integrate CakePHP-app to Facebook canvas -


i have problems integrating cakephp-app (2.3.8) facebook canvas. when load app-page in facebook, answer is:

the request has been black-holed error: requested address '/?fb_source=search&ref=ts&fref=ts' not found on server.

i have defined in facebook's app settings canvas secure url is:

https://facebook.mydomain.com/

so page found facebook. (actually if cakephp's tmp/ directory not writable, facebook's app-page displays error message -> url @ least correct)

i have used facebook php-sdk integrating facebook. page works standalone page, integrating facebook canvas problem.

here config/facebook.php

  $config = array(     'facebook' => array(             'appid' => '***********',             'secret' => '**********************'             )     );

and here controller facebook related stuff:

 public function login() {             configure::load('facebook');             $appid = configure::read('facebook.appid');             $app_secret = configure::read('facebook.secret');             $facebook = new facebook(array(                             'appid' => $appid,                             'secret'=> $app_secret             ));             $loginurl = $facebook->getloginurl(array(                             'scope' => 'user_birthday,user_location',                             'redirect_uri' => base_url . 'books/facebook_connect',                             'display' => 'popup'             ));             $this->redirect($loginurl);     } public function facebook_connect() {             configure::load('facebook');             $appid = configure::read('facebook.appid');             $app_secret = configure::read('facebook.secret');             $facebook = new facebook(array(                             'appid' => $appid,                             'secret'=> $app_secret             ));             $user = $facebook->getuser();  // , rest of function saving authenticated user database

all tutorials have found pretty straightforward , make easy integrate facebook canvas. have not succeeded in getting simple "hello world"-page index.php , facebook php-sdk work. have tried cookies set true, didn't either.

this pretty broad question , must hard imagine wrong in case, if can find out or had suffered similar errors, please share knowledge.

update ! :

here var_dump($this->params); bookscontroller.php:

object(cakerequest)#6 (9) { ["params"]=> array(5) { ["plugin"]=> null ["controller"]=> string(5) "books" ["action"]=> string(5) "index" ["named"]=> array(0) { } ["pass"]=> array(0) { } } ["data"]=> array(2) { ["signed_request"]=> string(514) "//here long string hash" ["locale"]=> string(5) "en_gb" }

(i didn't paste whole var_dump() here because lots of unnecessary information)

so understood need somehow validate signed_request facebook website working in facebook canvas? don't have clue how that... have implemented "my own" admin authentication system auth-components. know need fix there, somehow don't know start. moving parts...

is approach presented in answer below correct one? @ least fixed problem, mine didn't. mean is, key element in answer can transfer code? or if full picture, find out myself answer...

second update ! :

i unset($this->request->data['signed_request']) , $this->security->csrfcheck = false... didn't work. i'm missing?

the "blackhole" due security component. believe issue has been resolved @ question/answer: cakephp , facebook security component turned on


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