i have created a facebook app and it works well for new users if they start the app with the direct server link (https://www.mydomain.com/app/index.php) and use the login button.
But if they try to use the app within facebook (https://apps.facebook.com/myapp) as a canvas app(for the first time) then they see the "landing" page of my app and the log in button. But if they click on it, an errormessage appears, that the content of the iframe couldn't be displayed. If they start the app in a new tab, then the login process works. (see the error below, sorry it's german, maybe you are familiar with this type of error message?)
It would be desirable if the new user could use the login link in the canvas app.
How can this be achieved? My index.php looks like this: (i am using the facebook SDK)
<?php
require_once('php-sdk/facebook.php');
$config = array(
'appId' => 'YOUR_APP_ID',
'secret' => 'YOUR_APP_SECRET',
);
$facebook = new Facebook($config);
$user_id = $facebook->getUser();
?>
<html>
<head></head>
<body>
<?php
if($user_id) {
try {
$user_profile = $facebook->api('/me','GET');
echo "Name: " . $user_profile['name'];
} catch(FacebookApiException $e) {
$login_url = $facebook->getLoginUrl();
echo 'Please login.';
error_log($e->getType());
error_log($e->getMessage());
}
} else {
$login_url = $facebook->getLoginUrl();
echo 'Please login.';
}
?>
</body>
</html>
Related
I am new to facebook graph api
i have written a small application for posting comments on the user profile.
the following is the code:
<?php
require_once 'config.php';
/* Get a valid session */
$user= $facebook->getUser();
$me = null;
if($user) {
//Check if session is valid
$me = $facebook->api('/me');
}
if($me) {
echo 'User is logged in and has a valid session';
print_r($me);
$id=getfirstpostid($facebook->api('/me/posts'));
echo "id is ".$id;
$message="This is done programatically";
$comment_id = $facebook->api('/'.$id.'/comments','POST',
array('message' => $message,));
//$like_id = $facebook->api('/'.$id.'/likes', 'POST');
}
else {
//$login_url = $facebook->getLoginUrl();
//header("Location: {$login_url}");
echo 'Session expired or user has not logged in yet.
Redirecting...';
$login_url=$facebook->getLoginUrl(array('req_perms'=>'publish_actions,user_likes,offline_access,manage_pages,user_friends',));
echo '<script>top.location.href="'. $login_url .'";</script>';
}
function getfirstpostid($feeds)
{
return $feeds['data'][0]['id'];
}
?>
<?php
$logoutUrl = $facebook->getLogoutUrl(array('next' => 'http://distanceeducationhelpline.org/',));
?>
<a href='<?php echo $appBaseUrl?>about.php' target='_top'>
About Us</a>
<a href='http://www.9itech.com' target='_top'>External Link</a>
<br/>
<br/>
<a href ="#" onclick="top.location.href='<?php echo $logoutUrl; ?>';
return false;">Logout</a>
a. While creating the app ,i have not provided secure Canvas Url and accordingly the Canvas page does not show up in facebook.
is it due to the secure canvas url not being proper that blank page comes in the canvas page url.
b. when i am accessing the user profile the profile does not ask for permission to post on his profile even though i have given permissions .
i am not able to get the likes and post comments to work.kindly update if there is any problem in code.
do we need to get access tokens in this case or the code is proper.
thanks
Currently I have the facebook api working. I have included scope string to grab extra permissions.
I am lacking the ability to authorize access to restricted pages on my site. How can I set it up so when facebook logs the user in they are also logged in to my site?
<?php
include 'src/facebook.php';
// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
'appId' => '****************',
'secret' => '****************',
'cookie' => true
));
// Get User ID
$user = $facebook->getUser();
// We may or may not have this data based on whether the user is logged in.
//
// If we have a $user id here, it means we know the user is logged into
// Facebook, but we don't know if the access token is valid. An access
// token is invalid if the user logged out of Facebook.
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
// Login or logout url will be needed depending on current user state.
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
echo "<a href='$logoutUrl'>Logout</a>";
} else {
$statusUrl = $facebook->getLoginStatusUrl();
$loginUrl = $facebook->getLoginUrl(array(
'scope' => 'user_checkins, user_location, friends_checkins')
);
echo "<a href='$loginUrl'>Login</a>";
}
?>
<h3>Welcome to your profile</h3>
<?php
echo $user_profile['first_name'];
echo ' <span> </span> ';
echo $user_profile['last_name'];
?>
This is the basic php api from facebook.
There are endless ways to do this, but you should just be able to place the private content inside of an IF block checking for the logged in Facebook user:
<?php if ($user): // Show the private content ?>
<h3>Welcome to your profile</h3>
<?php
echo $user_profile['first_name'];
echo ' <span> </span> ';
echo $user_profile['last_name'];
?>
<?php endif; ?>
i have created a facebook app and it works well for new users if they start the app with the direct server link (https://www.mydomain.com/app/index.php) and use the login button.
But if they try to use the app within facebook (https://apps.facebook.com/myapp) as a canvas app(for the first time) then they see the "landing" page of my app and the log in button. But if they click on it, an errormessage appears, that the content of the iframe couldn't be displayed. If they start the app in a new tab, then the login process works. (see the error below, sorry it's german, maybe you are familiar with this type of error message?)
It would be desirable if the new user could use the login link in the canvas app.
How can this be achieved? My index.php looks like this: (i am using the facebook SDK)
<?php
require_once('php-sdk/facebook.php');
$config = array(
'appId' => 'YOUR_APP_ID',
'secret' => 'YOUR_APP_SECRET',
);
$facebook = new Facebook($config);
$user_id = $facebook->getUser();
?>
<html>
<head></head>
<body>
<?php
if($user_id) {
try {
$user_profile = $facebook->api('/me','GET');
echo "Name: " . $user_profile['name'];
} catch(FacebookApiException $e) {
$login_url = $facebook->getLoginUrl();
echo 'Please login.';
error_log($e->getType());
error_log($e->getMessage());
}
} else {
$login_url = $facebook->getLoginUrl();
echo 'Please login.';
}
?>
</body>
</html>
I have a problem on Facebook App.
I want to make a fan-gate when any one enter the app url, Ex. apps.facebook.com/zoomcompetition/
I can't make it on the tab because it display blank.
but it works on the app url so I want to add fan-gate on the app appoint to Facebook Page.
This is the code
<?php
require 'src/facebook.php';
//require 'fbconfig.php';
require 'functions.php';
// Create An instance of our Facebook Application.
$facebook = new Facebook(array(
'appId' => ***************,
'secret' => **************,
));
// Get the app User ID
$user = $facebook->getUser();
if ($user) {
try {
// If the user is authenticated and logged-in
$user_profile = $facebook->api('/me');
//var_dump($user_profile);
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
// If the user is authenticated then generate the variable for the logout URL
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
?>
<!-- Insert Logged in HTML here -->
Logout
<?php
//Always place this code at the top of the Page
session_start();
if (!isset($_SESSION['id'])) {
// Redirection to login page facebook
header("location: index.php");
}
echo ' Welcome '.$_SESSION['username']; // or whatever you want your user to see.
$varri = "http://www.*****.ps";
?>
<iframe src=<?php print $varri; ?> scrolling="auto" width=100% height=100% frameborder="0"> </iframe>
<?php
$user = $facebook->getUser();
if ($user) {
$ret_obj = $facebook->api('/me/feed', 'POST',
array(
'link' => 'https://www.************.com',
'picture' => 'http://www.*******************.jpg',
'caption' => "أهلا وسهلا!",
'message' => ' Welcome '.$_SESSION['username'],
'uid'=> $facebook->getUser()
));
}
?>
<?php
} else {
$loginUrl = $facebook->getLoginUrl();
}
if (!empty($user_profile )) {
$username = $user_profile['name'];
$uid = $user_profile['id'];
$email = $user_profile['email'];
$user = new User();
$userdata = $user->checkUser($uid, 'facebook', $username,$email,$twitter_otoken,$twitter_otoken_secret);
if(!empty($userdata)){
session_start();
$_SESSION['id'] = $userdata['id'];
$_SESSION['oauth_id'] = $uid;
$_SESSION['username'] = $userdata['username'];
$_SESSION['email'] = $email;
$_SESSION['oauth_provider'] = $userdata['oauth_provider'];
//header("Location: home.php");
?>
<!--<!DOCTYPE>
<HTML>
<head>
<script>
function run(){
window.location.href = '/facebook/home.php';
}
</script>
</head>
<body onLoad="run()">
</body>
</html> -->
<?php
}
} else {
die("There was an error.");
}
}
else {
// Generate a session if there is none.
$login_url = $facebook->getLoginUrl(array( 'scope' => ' read_stream, publish_stream, email'));
?>
<!DOCTYPE>
<HTML>
<head>
<script>
function run(){
window.location.href = '<?php echo $login_url ?>';
}
</script>
</head>
<body onLoad="run()">
</body>
</html>
<?php
}
?>
Can you help me to solve one of the following:
What do I need to make it not display "Blank" on the tab?
2- How can I make a fan-gate for specific Facebook Pae if any one go to App
url directly?
What do I need to make it not display "Blank" on the tab?
Generate some output instead of nothing, I’d guess …?
How can I make a fan-gate for specific Facebook Pae if any one go to App url directly?
You can redirect from the canvas page to a specific page/app combination via JavaScript (top.location.href = "FB-Address of your page/app id combo"). And to check whether you’re on the canvas page, the simplest way to do so is give it an extra GET parameter in the canvas page address, which you then can evaluate in your code.
I've been struggeling with the facebook connect for a few days now, I'm only using the PHP SDK downloaded from facebook.
I first used some custom code, but after that failed I just copied the code on facebook, but this still fails.
Is there anything I do wrong? I've created an app on facebook, added the right domain (I get redirected correctly).
Once people login, this is the URL they get redirected to:
http://www.mysite.com/index.php?state=33e35654a84559d246c152ed10e8150b&code=AQBGxCMu4vgbw5HgU8EIoyq8rhuHaKvtJQR-VbPMVH8bd2JMIRcxojqJ-l7XrjIdG9TNN05el14Jv8isbHbUWj9so-CdhaEqj7tLR-Rj6-JaOTA7QErrpfN_0XQN1CGCmvmTL6ZtoUupgkVwkzq_CWDT9lSoDPvNHu2F67Jqlsi2DfQZGE1J7pDzujBoSoJhDhs#_=_
The code I copied from facebook:
<?
// Remember to copy files from the SDK's src/ directory to a
// directory in your application on the server, such as php-sdk/
require_once('classes/facebook/facebook.php');
$config = array(
'appId' => 'appID here',
'secret' => 'secret here',
);
$facebook = new Facebook($config);
$user_id = $facebook->getUser();
?>
<html>
<head></head>
<body>
<?
if($user_id) {
// We have a user ID, so probably a logged in user.
// If not, we'll get an exception, which we handle below.
try {
$user_profile = $facebook->api('/me','GET');
echo "Name: " . $user_profile['name'];
} catch(FacebookApiException $e) {
// If the user is logged out, you can have a
// user ID even though the access token is invalid.
// In this case, we'll get an exception, so we'll
// just ask the user to login again here.
$login_url = $facebook->getLoginUrl();
echo 'Please login.';
error_log($e->getType());
error_log($e->getMessage());
}
} else {
// No user, print a link for the user to login
$login_url = $facebook->getLoginUrl();
echo 'Please login.';
}
?>
</body>
</html>
It turns out it had something to do with the certificate, after some looking around I found out that changing
if (curl_errno($ch) == 60) {
// CURLE_SSL_CACERT
to
if (curl_errno($ch) == 60 || curl_errno($ch) == 77) {
// CURLE_SSL_CACERT
solves the problem