<?php
/**
 *
 * Copyright © 2016 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Catalog\Controller\Adminhtml\Category;

class RefreshPath extends \Magento\Catalog\Controller\Adminhtml\Category
{
    /**
     * @var \Magento\Framework\Controller\Result\JsonFactory
     */
    protected $resultJsonFactory;

    /**
     * @param \Magento\Backend\App\Action\Context $context
     * @param \Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory
     */
    public function __construct(
        \Magento\Backend\App\Action\Context $context,
        \Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory
    ) {
        parent::__construct($context);
        $this->resultJsonFactory = $resultJsonFactory;
    }

    /**
     * Build response for refresh input element 'path' in form
     *
     * @return \Magento\Framework\Controller\Result\Json
     */
    public function execute()
    {
        $categoryId = (int)$this->getRequest()->getParam('id');
        if ($categoryId) {
            $category = $this->_objectManager->create('Magento\Catalog\Model\Category')->load($categoryId);

            /** @var \Magento\Framework\Controller\Result\Json $resultJson */
            $resultJson = $this->resultJsonFactory->create();
            return $resultJson->setData(['id' => $categoryId, 'path' => $category->getPath()]);
        }
    }
}
