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+--- Thread: Facebook login (/showthread.php?tid=69775)
Facebook login - Marcolino92 - 01-16-2018
Hello guys, sorry for the question, which I have already tried immensely on google but I could not make it with any tutorial present. I would like to create a facebook login, but it seems that every tutorial is not fully functional.
Can you give me a guide or a small example of this? I would simply like a login with an obvious system of permissions (if logged in or not). I've tried a lot of guides, but it seems to always miss something or always make a mistake.
RE: Facebook login - neuron - 01-16-2018
I used this library:
https://github.com/facebook/php-graph-sdk/contributors
and put it to application/third_party folder
usage:
1. I created Facebook.php library in appication/library:
PHP Code:
class Facebook {
public function __construct($config = array()) {
require_once APPPATH.'third_party/facebook/vendor/autoload.php';
$this->fb = new Facebook\Facebook($config);
$this->permissions = ['public_profile','email'];
$this->fb_helper = $this->fb->getRedirectLoginHelper();
}
public function loginURL($url) {
return $this->fb_helper->getLoginUrl($url, $this->permissions);
}
public function authenticate($code = null) {
return $this->client->authenticate($code);
}
public function getAccessToken() {
try{
$token = $this->fb_helper->getAccessToken();
return array('token' => $token, 'message' => '');
}catch(Facebook\Exceptions\FacebookResponseException $e)
{
// When Graph returns an error
return array('token' => false,
'message' => 'There was an error while trying to login using Facebook: ' . $e->getMessage()
);
}catch(Facebook\Exceptions\FacebookSDKException $e)
{
// When validation fails or other local issues
return array('token' => false,
'message' => 'Facebook SDK returned an error: ' . $e->getMessage()
);
}
}
public function setAccessToken($token) {
if (!empty($token)) {
$this->fb->setDefaultAccessToken($token);
}
}
public function revokeToken() {
return $this->client->revokeToken();
}
public function getUserInfo() {
try{
$response = $this->fb->get('/me?fields=id,first_name,last_name,name,email,verified');
return array('user_info' => $response->getGraphUser(), 'message' => '');
}catch(Facebook\Exceptions\FacebookResponseException $e)
{
// When Graph returns an error
return array('user_info' => false,
'message' => 'Could not retrieve user data: ' . $e->getMessage()
);
}
catch(Facebook\Exceptions\FacebookSDKException $e)
{
// When validation fails or other local issues
return array('user_info' => false,
'message' => 'Facebook SDK returned an error: ' . $e->getMessage()
);
}
}
}
2. In login controller:
PHP Code:
public function index(){
//...
$this->load->library('facebook', $this->config->item('fb_config'));
$callbackurltoyourwebsite = base_url() . 'login/facebookLogin';
$data['facebook_login_link'] = $this->facebook->loginURL($callbackurltoyourwebsite);
//facebook_login_link will be used in view as a facebook login button
}
PHP Code:
public function facebookLogin()
{
$this->load->library('facebook', $this->config->item('fb_config'));
$response = $this->facebook->getAccessToken();
if($response['token'])
{
$token = $response['token'];
$this->facebook->setAccessToken($token);
}else{
error_log($response['message']);
}
if(!empty($token))
{
$response = $this->facebook->getUserInfo();
if($response['user_info']){
$fbuser = $response['user_info'];
$member_data = array();
if ($fbuser['id'] && $fbuser['verified'])
{
$login_data['email'] = $fbuser['email'];
$member_data = $this->member_model->getmember($login_data);
if (empty($member_data)) //if there is no member with the same email address
{
//insert new member
//then:
$this->_set_session_data($member_data);
}
else{
$this->_set_session_data($member_data);
redirect();
}
}else{
}
}else{
}
}
}
your facebook configs in applicaton/config/config.php:
PHP Code:
$config['fb_config'] = array(
'app_id' => '',
'app_secret' => '',
'default_graph_version' => 'v2.5');
RE: Facebook login - Marcolino92 - 01-16-2018
Thanks for your help, can you tell me where to upload the facebook sdk? And how to call the folder?
RE: Facebook login - neuron - 01-16-2018
(01-16-2018, 12:16 PM)Marcolino92 Wrote: Thanks for your help, can you tell me where to upload the facebook sdk? And how to call the folder?
Everything is in my answer read carefully
RE: Facebook login - bvrignaud - 01-17-2018
Hello,
You can use my library : https://github.com/bvrignaud/ci-fb-ion-auth
RE: Facebook login - Marcolino92 - 01-19-2018
Hi guys, I tried with a library but this error appears. It does not find the class. I inserted the Facebook "Facebook" SDK folder inside the Library. Where am I wrong?
An uncaught Exception was encountered
Type: Error
Message: Class 'Facebook\Facebook' not found
Filename: /home/mhd-01/www.augustani.it/htdocs/application/libraries/Facebook.php
Line Number: 65