ubn5/frontend/models/SearchForm.php

<?php


namespace frontend\models;


use yii\base\Model;

class SearchForm extends Model
{
    public $q;

    public function rules()
    {
        return [
            [['q'], 'required'],
        ];
    }

    public function attributeLabels()
    {
        return [
            'q' => 'คำค้น'
        ];
    }
}