public function actionRegister()
    {
        $model = new RegisterForm;
        $msg = null;
        if ($model->load(Yii::$app->request->post()) && Yii::$app->request->isAjax)
        {
            Yii::$app->response->format = Response::FORMAT_JSON;
            return ActiveForm::validate($model);
        }
        if ($model->load(Yii::$app->request->post()))
        {
            if($model->validate())
            {
                $table = new Usuario;
                $table->username = $model->username;
                $table->email = $model->email;
                $table->password = crypt($model->password, Yii::$app->params["salt"]);
                $table->authKey = $this->randKey("abcdef0123456789", 200);
                $table->accessToken = $this->randKey("abcdef0123456789", 200);

                //Si el registro es guardado correctamente
                if ($table->save())
                {
                    $user = $table->find()->where(["email" => $model->email])->one();
                    $id = urlencode($user->id);
                    $authKey = urlencode($user->authKey);
                    $subject = "Confirmar registro";
                    $body = "<h1>Haga click en el siguiente enlace para finalizar tu registro</h1>";
                    $body .= "<a href='http://localhost:8888/futbolpika/web/index.php/site/confirm?id=".$id."&authKey=".$authKey."'>Confirmar</a>";
                    //Enviamos el correo
                    Yii::$app->mailer->compose()
                        ->setTo($user->email)
                        ->setFrom([Yii::$app->params["adminEmail"] => Yii::$app->params["title"]])
                        ->setSubject($subject)
                        ->setHtmlBody($body)
                        ->send();
                    $model->username = null;
                    $model->email = null;
                    $model->password = null;
                    $model->password_repeat = null;

                    $msg = "Ahora sólo falta que confirmes tu registro en tu cuenta de correo";
                }
                else
                {
                    $msg = "Ha ocurrido un error al llevar a cabo tu registro";
                }
            }
            else
            {
                $model->getErrors();
            }
        }
        return $this->render("register", ["model" => $model, "msg" => $msg]);
    }