Access Token not retrieving data from Facebook PHP sdk - php

Question

Here's my code to retrieve user's info from Facebook. I am using PHP SDK.
public function indexAction()
{
$fb = new Facebook\Facebook([
'app_id' => '934741473308351',
'app_secret' => 'de001d018a7769eb17eb11300e772a0c',
'default_graph_version' => 'v2.5',
'default_access_token' => isset($_SESSION['facebook_access_token']) ? $_SESSION['facebook_access_token'] : 'APP-ID|APP-SECRET'
]);
try {
if(isset($_SESSION['facebook_access_token'])){
$response = $fb->get('/me');
$userNode = $response->getGraphUser();
Mage::log("Email====>Before".$userNode->getFirstName());
// echo 'Name: ' . $user['first_name'];
$this->_redirectUrl('/app-new/app/#/myAccount');
exit;
}
//redirect, or do whatever you want
} catch(Facebook\Exceptions\FacebookResponseException $e) {
//echo 'Graph returned an error: ' . $e->getMessage();
} catch(Facebook\Exceptions\FacebookSDKException $e) {
//echo 'Facebook SDK returned an error: ' . $e->getMessage();
}
$helper = $fb->getRedirectLoginHelper();
$permissions = ['email', 'user_likes']; // optional
$loginUrl = $helper->getLoginUrl(Mage::getBaseUrl().'facebook/facebook/authenticate', $permissions);
echo $loginUrl;
}
public function authenticateAction(){
Mage::log("Authenticate=======");
$fb = new Facebook\Facebook([
'app_id' => '934741473308351',
'app_secret' => 'de001d018a7769eb17eb11300e772a0c',
'default_graph_version' => 'v2.5',
]);
$helper = $fb->getRedirectLoginHelper();
try {
$accessToken = $helper->getAccessToken();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
if (isset($accessToken)) {
// Logged in!
Mage::log("Access Token=================>".(string) $accessToken);
$oAuth2Client = $fb->getOAuth2Client();
// Exchanges a short-lived access token for a long-lived one
$fb->setDefaultAccessToken((string) $accessToken);
$_SESSION['facebook_access_token'] = (string) $accessToken;
try {
$response = $fb->get('/me');
$userNode = $response->getGraphUser();
Mage::log("Email====>Before".$userNode->getFirstName());
$customer = $this->checkIfUserExists($userNode);
$this->_redirectUrl('/app-new/app/#/myAccount');
exit;
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
}
}
I got the result first, but I am not getting result after that. Is it due to access taken or something else. What am I doing wrong here

Answer 1

You are missing a new feature of v2.4 of the Graph API, it´s called "Declarative Fields". You now have to add a field parameter to specify the fields you want to get, else you will only get id and name: https://developers.facebook.com/docs/apps/changelog#v2_4
Also, make sure your login works correctly and you get asked for the email permission when you authorize your App.