title: Soft delete not working in Laravel 4
body: <p>I can't manage to successfully delete an item with <code>Asset::destroy($id)</code> when soft delete is enabled (with <code>protected $softDelete = true;</code> in the model). The item doesn't get deleted, and <code>deleted_at</code> is not updated. However if I remove the soft delete line from the model, then the item gets removed from the database. I haven't been able to get soft delete to work, or even to find out the cause of this issue.</p>
  
  <p>This is my Asset model code,</p>
  
  <pre><code>&lt;?php
  
  class Asset extends Eloquent {
  
      protected $guarded = array();
  
      protected $softDelete = true;   
  
      public static $rules = array(
              'message' =&gt; 'required'
          );
  
      public static function validate($data)
      {
          return Validator::make($data, static::$rules);
      }
  }
  </code></pre>