common/models/Currency.php

<?php
namespace common\models;
use Yii;
/**
 * This is the model class for table "w_currency".
 *
 * @property integer $id
 * @property string $name
 * @property double $rate
 * @property integer $is_default
 * @property string $timestamp
 */
class Currency extends \yii\db\ActiveRecord
{
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'w_currency';
    }
    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['name', 'rate'], 'required'],
            ['rate', \common\components\CommaNumberValidator::className()],
            [['is_default'], 'integer'],
            [['timestamp'], 'safe'],
            [['name'], 'string', 'max' => 50],
            [['name'], 'unique'],
            [['is_default'], 'unique']
        ];
    }
    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID',
            'name' => 'Название',
            'rate' => 'Курс',
            'is_default' => 'Is Default',
            'timestamp' => 'Дата обновления',
        ];
    }
    public function beforeSave($insert)
    {
        if ( parent::beforeSave($insert) ) {
            $this->timestamp = date("Y-m-d H:i:s");
            return true;
        } else {
            return false;
        }
    }
}