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<?php |
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namespace Fab\Vidi\ViewHelpers\Result; |
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/* |
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* This file is part of the Fab/Vidi project under GPLv2 or later. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.md file that was distributed with this source code. |
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*/ |
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use Fab\Vidi\ViewHelpers\Grid\RowsViewHelper; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper; |
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/** |
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* View helper for rendering a JSON response. |
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*/ |
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class ToJsonViewHelper extends AbstractViewHelper |
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{ |
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/** |
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* Render a Json response |
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* |
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* @return boolean |
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* @throws \TYPO3\CMS\Fluid\Core\ViewHelper\Exception\InvalidVariableException |
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*/ |
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public function render() |
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{ |
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$objects = $this->templateVariableContainer->get('objects'); |
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$columns = $this->templateVariableContainer->get('columns'); |
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$output = array( |
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'sEcho' => $this->getNextTransactionId(), |
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'iTotalRecords' => $this->templateVariableContainer->get('numberOfObjects'), |
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'iTotalDisplayRecords' => $this->templateVariableContainer->get('numberOfObjects'), |
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'iNumberOfRecords' => count($objects), |
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'aaData' => $this->getRowsViewHelper()->render($objects, $columns), |
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); |
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$this->setHttpHeaders(); |
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return json_encode($output); |
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} |
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/** |
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* @return int |
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*/ |
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protected function getNextTransactionId() |
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{ |
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$transaction = 0; |
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if (GeneralUtility::_GET('sEcho')) { |
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$transaction = (int)GeneralUtility::_GET('sEcho') + 1; |
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} |
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return $transaction; |
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} |
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/** |
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* @return void |
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* @throws \InvalidArgumentException |
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*/ |
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protected function setHttpHeaders() |
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{ |
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/** @var \TYPO3\CMS\Extbase\Mvc\Web\Response $response */ |
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$response = $this->templateVariableContainer->get('response'); |
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$response->setHeader('Content-Type', 'application/json'); |
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$response->sendHeaders(); |
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} |
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/** |
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* @return RowsViewHelper |
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*/ |
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protected function getRowsViewHelper() |
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{ |
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return $this->objectManager->get(RowsViewHelper::class); |
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} |
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} |
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fabarea /
vidi
