Laravel:无法将用户对象保存到数据库

我正在YouTube上关注这个Laravel登录/注册教程，我遇到了一个问题。

似乎我无法将$user对象中的数据插入我的数据库中。到目前为止，我所拥有的一切都很好，直到我达到$user->save()方法。

以下是我AccountController.php.您会注意到我正在使用print_r来尝试调试该过程。第一个print_r被打印到我的页面上，但第二个永远不会打印：Laravel只是停止并输出一个神秘的Whoops, looks like something went wrong.警告。

class AccountController extends BaseController {
    public function getCreate()
    {
        return View::make('account.create');
    }
    public function postCreate()
    {
        $validator = Validator::make(Input::all(), array(
                    'email' => 'required|max:64|min:3|email|unique:users',
                    'name' => 'required|max:64|min:3',
                    'password' => 'required|max:64|min:6'
        ));
        if ($validator->fails())
        {
            // Return to form page with proper error messages
            return Redirect::route('account-create')
                            ->withErrors($validator)
                            ->withInput();
        }
        else
        {
            // Create an acount
            $email = Input::get('email');
            $name = Input::get('name');
            $password = Input::get('password');
            // Activation code
            $code = str_random(64);
            $user = User::create(array(
                        'active' => 0,
                        'email' => $email,
                        'username' => $name,
                        'password' => Hash::make($password),
                        'code' => $code
            ));
            if ($user)
            {
                // Send the activation link
                Mail::send('emails.auth.activate', array(
                    'link' => URL::route('account-activate', $code),
                    'name' => $name
                        ), function($message) use($user) {
                    $message
                            ->to($user->email, $user->username)
                            ->subject('Jasl | Activate your new account');
                });
                return Redirect::route('home')
                                ->with('success', 'One more step! You''ll get an email from us soon. Please follow the activation link to activate your account.');
            }
        }
    }
    public function getActivate($code)
    {
        // Find user whose code corresponds to the one we've previously sent through email
        $user = User::where('code', '=', $code)->where('active', '=', 0);
        if ($user->count())
        {
            $user = $user->first();
            $user->active = 1;
            $user->code = '';
            echo '<pre>', print_r($user), '<pre>';
            if ($user->save())
            {
                echo '-----------------------';
                echo '<pre>', print_r($user), '<pre>';
            }
        }
    }
}

谷歌搜索了一下，发现我应该在我的User类中创建一个$fillable数组，所以我做到了：

use Illuminate'Auth'UserTrait;
use Illuminate'Auth'UserInterface;
use Illuminate'Auth'Reminders'RemindableTrait;
use Illuminate'Auth'Reminders'RemindableInterface;
class User extends Eloquent implements UserInterface, RemindableInterface {
    protected $fillable = array('active', 'name', 'email', 'password', 'password_temp', 'code', 'salt', 'created_at', 'updated_at', 'pref_weight', 'pref_units', 'pref_time', 'pref_ener');
    use UserTrait,
        RemindableTrait;
    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'users';
    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */
    protected $hidden = array('password', 'remember_token');
}

这些实际上是我的用户表具有的所有元素。

这并没有解决问题。

我错过了什么？为什么$user->save()不能正常工作？