title: How to pass default parameters to laravel controller in a get route
body: <p>I have a route like that:</p>
  
  <pre><code>Route::get('category/{id}/{date?}', array('as' =&gt; 'category/date', 'uses' =&gt; 'Controller@getCategory'));
  </code></pre>
  
  <p>I want to run @getCategory with default parameters when called '/' root route. So if '/' route called, getCategory function should run with id=1 and date=2015-12-18.</p>
  
  <p>How should I do that?</p>