Facebook OAuth Issue with CakePHP 2.9 - facebook

Question

Hi Guys first of all let me tell you guys that I am a newbie with CakePHP and MVC also but one of my old client requested me some favor which I took as a challenge. So If anyone can help me I will appreciate a lot.
I have a CakePHP 2.9 application where OAuth is not working properly following is the code for app/Controller/UsersController.php
public function facebookLogin(){
$this->layout = false;
App::import('Vendor', 'Facebook/facebook');
/*$facebook = new Facebook(array(
'appId' => '1867587306812489', // Facebook App ID
'secret' => '9fb41a07d3da3406dbab5861c3498764', // Facebook App Secret
'cookie' => false,
)
); */
$facebook = new Facebook(array(
'appId' => '1887387108164606', // Facebook App ID
'secret' => '8d733aa6a4501ce27fde9626429baab9', // Facebook App Secret
'cookie' => false,
)
);
$user = $facebook->getUser();
if ($user) {
try {
$user_profile = $facebook->api('/me?fields=first_name,last_name,email');
$usersArr = $this->User->find('first',array('conditions'=>array('User.email'=>$user_profile['email'],'User.social_id'=>$user_profile['id'],'User.role_id'=>0)));
$user_count = $this->User->find('first',array('conditions'=>array(),'order'=>'User.id DESC','limit'=>1));
if(empty($usersArr)){
$saveUserArr['User']['username'] = trim($user_profile['first_name']).' '.trim($user_profile['last_name']);
$saveUserArr['User']['firstname'] = $user_profile['first_name'];
$saveUserArr['User']['lastname'] = $user_profile['last_name'];
/* $user_n = $saveUserArr['User']['first_name'].'.'.$saveUserArr['User']['last_name'];
$user_cnt = $user_count['User']['id'] + 1;
$user_n = str_replace(' ','_',$user_n).'.'.$user_cnt;
$saveUserArr['User']['user_unique_id'] = $user_n; */
$saveUserArr['User']['email'] = $user_profile['email'];
$saveUserArr['User']['password'] = '123456';
$saveUserArr['User']['social_id'] = $user_profile['id'];
$saveUserArr['User']['login_from'] = 'facebook';
$saveUserArr['User']['role_id'] = 0;
$this->User->save($saveUserArr['User'],false);
}else{
$this->User->id = $usersArr['User']['id'];
$this->User->saveField('social_id', $user_profile['id']);
$this->User->saveField('login_from', 'facebook');
}
$this->request->data['User']['email'] = $user_profile['email'];
$this->request->data['User']['login_from'] = 'facebook';
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
} else {
$loginUrl = $facebook->getLoginUrl(array(
'scope' => 'email', // Permissions to request from the user
));
return $this->redirect($loginUrl);
}
}
private function deleteFacebookSession(){
Configure::write('debug', 0);
if(!$this->Session->check('Auth.User')){
foreach( $this->Session->read() as $key => $value ) {
if( strpos( $key, 'fb_' ) === 0 ) {
$this->Session->delete($key);
}
}
}
}
It throws following error:

Answer 1

The oauth script url is not properly configured in your fb app.
You may go to your fb app settings and look for APP DOMAIN.
Include your domain there:
If you are developing in your localhost, you may want to create a server.local rec in your hosts file so you can access your localserver as server.local.
Also, you can create test versions of the main fb app, and allows you to have a copy of your fb app that works in other environments, it is called "create test app"