MethodNotAllowedHttpException in laravel

当我试图检查验证器是否工作时，我得到了"Symfony''Component''HttpKernel''Exception''MethodNotAllowedHttpException"作为响应。所以当我点击保存按钮后。这是我的代码：

在我的视图"addMedia partial.blade.php"中：

         {{ Form::open() }}
            <input type="text" name="videoUrl" placeholder="enter youtube video url" />
            <input type="text" name="videoTitle" placeholder="enter video title" />
            <input type="text" name="videoDescription" placeholder="enter video description" />
            <input type="submit" value="Save">
        {{ Form::close() }}

在我的routes.php中：

Route::get('/guide/dashboard/media/add/storeVideo', array('as' => 'guide-video-add','uses' => 'MediaController@getNewVideo'));
Route::post('/guide/dashboard/media/add/storeVideo', array('uses' => 'MediaController@postNewVideo'));

在我的控制器MediaController.php中：

public function postNewVideo() 
{
        $rules = array('videoUrl' => 'required', 'videoTitle' => 'required|min:5', 'videoDescription' => 'required|min:20');
        $validator = Validator::make(Input::all(), $rules);
        if ($validator->fails()) {

            //return Redirect::route('guide-media-add')->withErrors($validator);
            //gaat niet omdat dit in een andere controller is ?? 
            return Redirect::route('guide-video-add')->withErrors($validator);
        }
}
public function getNewVideo()
{
    return View::make('guide.dashboard.dashboard')->nest('child', 'guide.dashboard.addMedia-partial');
}