如何在facebook上发布链接使用sdk PHP

Question

我正在创建向Facebook分享帖子的功能，我正在关注文档：https://developers.facebook.com/docs/php/howto/postwithgraphapi。但它不起作用。 这是我的功能

public function shareFB(Request $request, $slugify)
{
    $petition = Petitions::where('slug', $slugify)->first();
    $access_token = auth()->user()->social_account->access_token;

    $fb = new Facebook\Facebook([
      'app_id' => config("services.facebook.client_id"),
      'app_secret' => config("services.facebook.client_secret"),
      'default_graph_version' => 'v2.2',
    ]);

    $linkData = [
      'link' => route('petitions.index',$petition->slug),
      'message' => $request->get('shareFB'),
    ];

    try {
        $response = $fb->post('/me/feed','post', $linkData, $access_token);
    } catch(Facebook\Exceptions\FacebookResponseException $e) {
        echo 'Graph returned an error: ' . $e->getMessage();
        exit;
    } catch(Facebook\Exceptions\FacebookSDKException $e) {
        echo 'Facebook SDK returned an error: ' . $e->getMessage();
        exit;
    }

    $share = $response->getGraphNode();
}

这是我在laravel的路线

Route::post('share/p/{slugify}','Frontend\SocialController@shareFB')->name('social.shareFB');

当我点击一个按钮上面有href时，它会显示MethodNotAllowedHttpException。有人帮我解决了！