Rafalsky/HomeFinance

<?php

/*
 * This file is part of the HomeFinanceV2 project.
 *
 * (c) Rafalsky.com <http://github.com/Rafalsky/>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace common\validators;

use yii\validators\Validator;

/**
 * @author Eugene Terentev <eugene@terentev.net>
 */
class JsonValidator extends Validator
{
    /**
     * @inheritdoc
     */
    public function init()
    {
        parent::init();
        if ($this->message === null) {
            $this->message = \Yii::t('common', '"{attribute}" must be a valid JSON');
        }
    }
    /**
     * @inheritdoc
     */
    public function validateValue($value)
    {
        if (!@json_decode($value)) {
            return [$this->message, []];
        }
    }

    /**
     * @inheritdoc
     */
    public function clientValidateAttribute($model, $attribute, $view)
    {
        $message = \Yii::$app->getI18n()->format($this->message, [
            'attribute' => $model->getAttributeLabel($attribute)
        ], \Yii::$app->language);
        return <<<"JS"
            try {
                JSON.parse(value);
            } catch (e) {
                messages.push('{$message}')
            }
JS;
    }
}