/** @return \Kdyby\Facebook\Dialog\LoginDialog */
protected function createComponentFbLogin()
{
$dialog = $this->facebook->createDialog('login');
/** @var \Kdyby\Facebook\Dialog\LoginDialog $dialog */
$dialog->onResponse[] = function (\Kdyby\Facebook\Dialog\LoginDialog $dialog) {
$fb = $dialog->getFacebook();
if (!$fb->getUser()) {
$this->flashMessage("Facebook authentication failed.");
return;
}
/**
* If we get here, it means that the user was recognized
* and we can call the Facebook API
*/
try {
$me = $fb->api('/me');
if (!($existing = $this->usersModel->findByFacebookId($fb->getUser()))) {
/**
* Variable $me contains all the public information about the user
* including facebook id, name and email, if he allowed you to see it.
*/
$existing = $this->usersModel->registerFromFacebook($fb->getUser(), $me, $this->user);
}
/**
* You should save the access token to database for later usage.
*
* You will need it when you'll want to call Facebook API,
* when the user is not logged in to your website,
* with the access token in his session.
*/
$this->usersModel->updateFacebookAccessToken($fb->getUser(), $fb->getAccessToken());
/**
* Nette\Security\User accepts not only textual credentials,
* but even an identity instance!
*/
$this->user->setExpiration('365 days', FALSE);
$this->user->login(new \Nette\Security\Identity($existing->id, NULL, $existing));
/**
* You can celebrate now! The user is authenticated :)
*/
} catch (\Kdyby\Facebook\FacebookApiException $e) {
/**
* You might wanna know what happened, so let's log the exception.
*
* Rendering entire bluescreen is kind of slow task,
* so might wanna log only $e->getMessage(), it's up to you
*/
\Tracy\Debugger::log($e, 'facebook');
$this->flashMessage("Facebook authentication failed.");
}
$this->redirect('this');
};
return $dialog;
}
