title: Update Model with __construct to limit returned result
body: <p>I have a mode Clients, that user’s database table Clients</p>
  
  <pre><code>Id  | active
  ________________
  1   | true
  2   | true
  3   | false
  </code></pre>
  
  <p>I want to update this model, so that every time Model Clients is called inside my app 
  Visitors::get();</p>
  
  <p>It return only those Visitors that has active ==  true</p>
  
  <pre><code>class Clients extends Eloquent {
  
      protected $table = ' Clients ';
  …..
  public function __construct()....
  </code></pre>
  
  <p>How I can do that?</p>