title: Can't get user_id Laravel with Auth::user() just with \Auth::user()
body: <p>sorry if it is a noob question, but I'm trying to learn laravel on laracast and can't solve this by my own.</p>
  
  <p>there is a store function on my ArticlesController like this:</p>
  
  <pre><code>public function store(ArticleRequest $request)
      {
          $article = new Article($request-&gt;all());
  
          Auth::user()-&gt;articles()-&gt;save($article);
  
          return redirect('articles');
      }
  </code></pre>
  
  <p>and it returns a blank page, making clear that is some error, but if I change to </p>
  
  <pre><code>    \Auth::user()-&gt;articles()-&gt;save($article);
  </code></pre>
  
  <p>it works as expected, saving the article with the <code>user_id</code> field.
  <br>
  I tried import with <code>use App\Http\Controllers\Auth\AuthController;</code> but I think this is not the way.</p>
  
  <p>*obs: Laravel 5.0</p>