title: Laravel's save() does not save all fields
body: <p>AdvertiseController.php</p>
  
  <pre><code>class AdvertiseController extends Controller
  {
      ...
      public function NewAdvertiser()
      {
          $advertiser = new Advertiser((string)Uuid::generate(4));
          $advertiser-&gt;createAdvertiser();
          return Redirect::route('dashboard');
      }
      ...
  }
  </code></pre>
  
  <p>Advertiser.php</p>
  
  <pre><code>class Advertiser extends Model
  {
      ...
      protected $fillable = ['token'];
  
      private $token;
  
      function __construct($token)
      {
          $this-&gt;token = $token;
      }
  
      function createAdvertiser()
      {
          //dd($this);
          $this-&gt;save();
          //dd($this);
      }
      ...
  }
  </code></pre>
  
  <p>The first <code>dd($this)</code> prints the following:</p>
  
  <pre><code>Advertiser {#181 ▼
    #fillable: array:1 [▼
      0 =&gt; "token"
    ]
    -token: "44f1e74b-ad19-4e73-ac2e-b37ffde59e99"
    #connection: null
    #table: null
    #primaryKey: "id"
    #perPage: 15
    +incrementing: true
    +timestamps: true
    #attributes: []
    #original: []
    #relations: []
    #hidden: []
    #visible: []
    #appends: []
    #guarded: array:1 [▼
      0 =&gt; "*"
    ]
    #dates: []
    #dateFormat: null
    #casts: []
    #touches: []
    #observables: []
    #with: []
    #morphClass: null
    +exists: false
    +wasRecentlyCreated: false
  }
  </code></pre>
  
  <p>The second <code>dd($this)</code>:</p>
  
  <pre><code>Advertiser {#181 ▼
    #fillable: array:1 [▼
      0 =&gt; "token"
    ]
    -token: "295764d5-c45c-4aa9-8ce2-8ed772687fb8"
    #connection: null
    #table: null
    #primaryKey: "id"
    #perPage: 15
    +incrementing: true
    +timestamps: true
    #attributes: array:3 [▼
      "updated_at" =&gt; "2016-05-19 11:39:42"
      "created_at" =&gt; "2016-05-19 11:39:42"
      "id" =&gt; 7
    ]
    #original: array:3 [▼
      "updated_at" =&gt; "2016-05-19 11:39:42"
      "created_at" =&gt; "2016-05-19 11:39:42"
      "id" =&gt; 7
    ]
    #relations: []
    #hidden: []
    #visible: []
    #appends: []
    #guarded: array:1 [▼
      0 =&gt; "*"
    ]
    #dates: []
    #dateFormat: null
    #casts: []
    #touches: []
    #observables: []
    #with: []
    #morphClass: null
    +exists: true
    +wasRecentlyCreated: true
  }
  </code></pre>
  
  <p>The <code>token</code> has a minus sign, does it have anything to do with it? I couldn't find any information about it.</p>
  
  <p>The database migration for the field:</p>
  
  <pre><code>$table-&gt;uuid('token');
  </code></pre>
  
  <p>The problem is that all the records are stored successfully but the <code>token</code> field is blank.</p>