Fab\Vidi\ViewHelpers\Result\ToJsonViewHelper

Complexity

Total Complexity

5

Size/Duplication

Total Lines	58
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	render()	0	16	1
A	getNextTransactionId()	0	8	2
A	setHttpHeaders()	0	7	1
A	getRowsView()	0	4	1

<?php
namespace Fab\Vidi\ViewHelpers\Result;

/*
 * This file is part of the Fab/Vidi project under GPLv2 or later.
 *
 * For the full copyright and license information, please read the
 * LICENSE.md file that was distributed with this source code.
 */

use Fab\Vidi\View\Grid\Rows;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;

/**
 * View helper for rendering a JSON response.
 */
class ToJsonViewHelper extends AbstractViewHelper
{

    /**
     * Render a Json response
     *
     * @throws \TYPO3\CMS\Fluid\Core\ViewHelper\Exception\InvalidVariableException
     */
    public function render()
    {

        $objects = $this->templateVariableContainer->get('objects');
        $columns = $this->templateVariableContainer->get('columns');
        $output = array(
            'sEcho' => $this->getNextTransactionId(),
            'iTotalRecords' => $this->templateVariableContainer->get('numberOfObjects'),
            'iTotalDisplayRecords' => $this->templateVariableContainer->get('numberOfObjects'),
            'iNumberOfRecords' => count($objects),
            'aaData' => $this->getRowsView()->render($objects, $columns),
        );

        $this->setHttpHeaders();
        print json_encode($output);
    }

    /**
     * @return int
     */
    protected function getNextTransactionId()
    {
        $transaction = 0;
        if (GeneralUtility::_GET('sEcho')) {
            $transaction = (int)GeneralUtility::_GET('sEcho') + 1;
        }
        return $transaction;
    }

    /**
     * @return void
     * @throws \TYPO3\CMS\Fluid\Core\ViewHelper\Exception\InvalidVariableException
     * @throws \InvalidArgumentException
     */
    protected function setHttpHeaders()
    {
        /** @var \TYPO3\CMS\Extbase\Mvc\Web\Response $response */
        $response = $this->templateVariableContainer->get('response');
        $response->setHeader('Content-Type', 'application/json');
        $response->sendHeaders();
    }

    /**
     * @return Rows|object
     */
    protected function getRowsView()
    {
        return GeneralUtility::makeInstance(Rows::class);
    }
}