Php Laravel 4 API不允许来自外部站点的POST请求

我正试图通过从外部站点向我的Laravel 4 API发送POST请求来创建一个用户。我已将以下代码添加到我的app/filters.php文件中：

App::before(function($request)
{
    if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {

        header('Access-Control-Allow-Origin', 'http://www.myexternalsite.net');
        header('Allow', 'GET, POST, OPTIONS, PUT, DELETE');
        header('Access-Control-Allow-Headers', 'Origin, Content-Type, Accept, Authorization, X-Request-With');
        header('Access-Control-Allow-Credentials', 'true');

        exit;
    }
});

App::after(function($request, $response)
{
    $response->headers->set('Access-Control-Allow-Origin', 'http://www.myexternalsite.net');
    $response->headers->set('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
    $response->headers->set('Access-Control-Allow-Headers', 'Origin, Content-Type, Accept, Authorization, X-Requested-With');
    $response->headers->set('Access-Control-Allow-Credentials', 'true');
    $response->headers->set('Access-Control-Max-Age','86400');
    return $response;
});

当我根据来自的POST请求运行我的开发工具时，我收到以下警告消息：

event.returnValue is deprecated. Please use the standard event.preventDefault() instead. main-built.js:6

以及以下错误消息：

OPTIONS http://api.mywebsite.com/users 500 (Internal Server Error) main-built.js:7
OPTIONS http://api.mywebsite.com/users No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://www.myexternalsite.net' is therefore not allowed access. main-built.js:7

---

我遗漏了什么吗？

第一个错误严格来说是客户端javascript错误。错误描述的意思正是它所说的。您应该适当地更新js

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第二组错误消息可能与您正在跨域请求一个javascript文件有关，该文件不受PHP发送的头文件的约束。您需要在Web服务器上为此类端点配置CORS

谢谢！对于其他与Laravel有CORS相关问题的人，我在这里使用了这个包：简化流程。