how to get from submitted and return with previous object in yii2

i have a search result page and another form on it. when i get the result on this page i am submitted an enquiry form and want to get back on the page with different layout. my search function is:


public function actionFind()

{

    $GOR = new OnroadRequest();

    if(Yii::$app->request->post())

    {

        $data = $_POST;

        if($_POST['brand_id'] != ''){

            $brand_id = $_POST['brand_id'];

        }

        else{

            $brand_id = '';

        }

        if($_POST['city_id'] != ''){

            $city_id = $_POST['city_id'];

        }

        else{

            $city_id = '';

        }

        if($_POST['model_id'] != ''){

            $model_id = $_POST['model_id'];

        }

        else{

            $model_id = '';

        }

        if(isset($_POST['variant_id'])){

            $variant_id = $_POST['variant_id'];

        }

        else{

            $variant_id = '';

        }

        $getonroad = VariantOnroadprice::find()->where('city_id = '.$city_id.' and model.id = '.$model_id.' and model.brand_id = '.$brand_id.'')->joinWith('model')->joinWith('city')->asArray()->one();

        if($getonroad != '')

        {

            if(isset($getonroad['model'])){

                $getonroad['galleries'] = Gallery::find()->where('model_id = '.$getonroad['model']['id'].' and group_id = 4')->select('image')->asArray()->one();

                $getonroad['galleries']['count'] = Gallery::find()->where('model_id = '.$getonroad['model']['id'].' and (group_id = 1 or group_id = 2)')->count('image');

            }

        }

         return $this->render('find',[

            'getonroad' => $getonroad,

            'GOR' => $GOR,

            'brand_id'=>$brand_id,

            'city_id'=>$city_id,

            'model_id'=>$model_id,

            'variant_id'=>$variant_id,

        ]);

    }

    else 

    {

        return $this->render('find',[

            'GOR' => $GOR,

        ]);

    }

}

and my form function is :


public function actionAdd(){

        $GOR = new OnroadRequest();

        if ($GOR->load(Yii::$app->request->post())) 

        {

            if($GOR->phone_id != ''){

                $phone = Phone::find()->where('phone = '.$GOR->phone_id.'')->asArray()->one();

                if($phone == ''){

                    $phone = new Phone();

                    $phone->phone = $GOR->phone_id;

                    if($phone->save()){

                        $GOR->phone_id = $phone->id;

                    }

                }

                else{

                    $GOR->phone_id = $phone['id'];

                }

            }

            if($GOR->save()){

                return $this->render('result', [

                    'GOR' => $GOR,

                ]);

            }

            else{

                Yii::$app->getSession()->setFlash('error', 'Unable to save.');

                return $this->redirect('find', [

                    'GOR' => $GOR,

                ]);

            }

        } 

        else 

        {

            return $this->render('index', [

                    'GOR' => $GOR,

                ]);

        }

    }

now this find function is working fine. and the add function is also submitting data to db. but after submitting the add function i dont get my previous searched data or the variable. so how do i resolve it.

P.S. i have used $_POST because the i cant create any object which has attributes like i want to be in search filter. and do recommend any method to get the form data of html helper form without active object. thanks in advance