php - 在登录时更改 Facebook 重定向 URL

Question

我正在尝试更改我网站上 Facebook 登录的重定向 URL。这样我就可以转到一个页面，如果他们不存在，我可以在我的数据库中创建一个新用户，然后将他们重定向到我的主页。但是，当我尝试登录时，我在 Facebook 上收到以下错误:PHP SDK 单元测试发生错误。请稍后再试。

我的代码(我想将它们重定向到 mysite.com/createfbuser.php):

public function getLoginUrl($params=array()) {
     $this->establishCSRFTokenState();
     $currentUrl = $_SERVER['SERVER_NAME'] . '/createfbuser.php';
     return $this->getUrl(
       'www',
       'dialog/oauth',
       array_merge(array(
                'client_id' => $this->getAppId(),
                'redirect_uri' => $currentUrl, // possibly overwritten
                'state' => $this->state,
                'scope' => 'email'),
       $params));
}

EDIT 原代码为$currentUrl = $this->getCurrentUrl(); 供引用

Answer 1

首先，您不必编辑 PHP SDK，下面是验证用户然后重定向到您的着陆页的示例，

确保更换:

YOUR-APP-ID-HERE 和你的 facebook 应用程序 ID，

YOUR-APP-API-SECRET-HERE 和您的 facebook 应用程序 key

YOUR-REDIRECT-URL-HERE 和您的着陆页 URL

<?php

    // Requires Facebook PHP SDK 3.0.1: https://github.com/facebook/php-sdk/
    require ('facebook.php');

    define('FACEBOOK_APP_ID',"YOUR-APP-ID-HERE");
    define('FACEBOOK_SECRET',"YOUR-APP-API-SECRET-HERE");
    define('REDIRECT_URI',"YOUR-REDIRECT-URL-HERE");
    $user = null;

    $facebook = new Facebook(array(
        'appId' => FACEBOOK_APP_ID,
        'secret' => FACEBOOK_SECRET,
        'cookie' => true
    ));

    $user = $facebook->getUser(); // Get the UID of the connected user, or 0 if the Facebook user is not connected.

    if($user == 0) {
        // If the user is not connected to your application, redirect the user to authentication page
        /**
         * Get a Login URL for use with redirects. By default, full page redirect is
         * assumed. If you are using the generated URL with a window.open() call in
         * JavaScript, you can pass in display=popup as part of the $params.
         * 
         * The parameters:
         * - redirect_uri: the url to go to after a successful login
         * - scope: comma separated list of requested extended perms
         */

        $login_url = $facebook->getLoginUrl($params = array('redirect_uri' => REDIRECT_URI));

        echo ("<script> top.location.href='".$login_url."'</script>");

    } else {
        // if the user is already connected, then redirect them to landing page or show some content
        echo ("<script> window.location.href='".REDIRECT_URI."'</script>");
    }

?>

如果你想获得扩展权限，那么只需在登录 url 中添加另一个“范围”参数，例如:

$login_url = $facebook->getLoginUrl($params = array('redirect_uri' => REDIRECT_URI,'scope' => 'comma-separated-list-of-requested-extended-perms'));

有关权限的更多详细信息，请参阅 facebook permissions docs