title: laravel 5.2 how to protect route only for authenticated user
body: <p>i'm new to laravel, i had installed auth scaffold, here is the route up to now.</p>
  
  <pre><code>Route::group(['middleware' =&gt; ['web']], function () {
  
      Route::auth();
      Route::get('/home', 'HomeController@index');    
  
  
      Route::get('addthreadhtml', function()
      {
          return View::make('addThreadForm');
      });
      Route::post('thread/add', 'ThreadController@addthread');
      Route::get('thread/showall', 'ThreadController@showallthread');
  
  });
  </code></pre>
  
  <p>i want to protect addthreadhtml from non-authenticated user access, if the user don't login, they will be redirected to another view.</p>
  
  <p>How can i do that? </p>