无法使用iframe标签访问Facebook signed_request [英] Cannot access Facebook signed_request with an iframe tab

问题描述

我有一个iframe加载在粉丝页面的Facebook选项卡，我没有运气访问$ _REQUEST [signed_request]对象。我很困惑，因为这应该是一个免费的，容易访问的。我已阅读并重新阅读了facebook文档，并重新检查了我的Facebook应用程序设置，但没有任何工作。

I've got an iframe loading in a facebook tab on a fan page and I'm not having any luck accessing the $_REQUEST["signed_request"] object. I'm confused because this is supposed to be a freebie and easily accessible. I've read and re-read the facebook docs and rechecked my facebook application settings but nothing is working.

isset($_REQUEST['signed_request']

总是错误，因为我使用Facebook PHP sdk也试过

is always false. Since I'm using the Facebook PHP sdk I've also tried

$facebook->getSignedRequest();

我在$ _REQUEST上完成了print_r，我没有看到signed_request，当我打印$ facebook对象时，我看到signedRequest为空

I've done print_r on the $_REQUEST and I don't see the signed_request in there. When I print_f the $facebook object, I see that the signedRequest is empty

[appId:protected] => XXX
[apiSecret:protected] => XXXXXXXXXXXXXXXXXXXX
[session:protected] => Array

        [access_token] => XXXXXXXXXX|2.h75WqKxcA1xbNPufFvpKQQ__.3600.1304452800.1-726960374|JiO0ZS30SyLaApeqhMtdocK8B_Y
        [base_domain] => XXXXXXXXX
        [expires] => 1304452800
        [secret] => rDF9C_z43_EUFy0Q_e6tyQ__
        [session_key] => 2.h75WqKxcA1xbNPufFvpKQQ__.3600.1304452800.1-726960374
        [sig] => 1971ef7eb8057c7404eae1f82d770ab5
        [uid] => XXXXXXXXXXXXXXX


[signedRequest:protected] => 
[sessionLoaded:protected] => 1
[cookieSupport:protected] => 1
[baseDomain:protected] => 
[fileUploadSupport:protected] => 

我的应用程序启用了OAuth 2.0设置。 p>

I do have the OAuth 2.0 setting enabled for the application.

推荐答案

经过调查，我怀疑这与iframe源的托管位置有关。

After some investigation, I suspect this has something to do with where the iframe source is hosted.

当我将所有内容移至localhost时，signed_request开始进行。

When I moved everything to localhost, the signed_request started coming in fine.

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