TCA options viewHelper

gistfile1.php

<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2010 Franz Koch <typo3@elements-net.de>, Koch & Koch GbR
*  			
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/


/**
 * Is fetching property values from TCA
 *
 * @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License, version 3 or later
 */
class Tx_ElementsExtbase_ViewHelpers_Tca_OptionsViewHelper extends Tx_Fluid_Core_ViewHelper_AbstractViewHelper {

	/**
	 * local cache for dataMaps
	 * @var array
	 */
	protected $dataMaps = array();

	/**
	 * @var Tx_Extbase_Persistence_Mapper_DataMapper
	 */
	protected $dataMapper;

	/**
	 * @var Tx_Extbase_Object_ObjectManager
	 */
	protected $objectManager;

	/**
	 * Injects the dataMapper
	 * @param Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper
	 * @return void
	 */
	public function injectDataMapper(Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper) {
		$this->dataMapper = $dataMapper;
	}

	/**
	 * Injects the objectManager
	 * @param Tx_Extbase_Object_ObjectManager $objectManager
	 * @return void
	 */
	public function injectObjectManager(Tx_Extbase_Object_ObjectManager $objectManager) {
		$this->objectManager = $objectManager;
	}

	/**
	 * Is returning select values for a property or propertyPath of a given object or className
	 * @param mixed $subject The object or className the property belongs to
	 * @param string $property The property itself
	 * @return array The select options as array
	 */
	public function render($subject = NULL, $property = '') {
		if (!is_object($subject) && is_string($subject) && class_exists($subject)) {
			$subject= $this->objectManager->create($subject);
		}
		return self::getSelectOptions($property, $subject);
	} 

	/**
	 * Is resolving the select values for a property or propertyPath of a given object or className
	 * @param string $propertyPath The property itself
	 * @param object $subject The object or className the property belongs to
	 * @return array The select options as array
	 */
	private function getSelectOptions($propertyPath, $subject) {
		$selectOptions = array();

		if (is_object($subject)) {
			$propertyPathSegments = t3lib_div::trimExplode('.', $propertyPath);
			$object = clone($subject);
			$propertyName = $propertyPath;

			// resolve a property path
			if (count($propertyPathSegments) > 1) {
				foreach($propertyPathSegments as $key => $propertyName) {
					$propertyType = $this->dataMapper->getType(get_class($tempObject), $propertyName);
					if (strpos($propertyType,'_')) {
						$object = $this->objectManager->create($propertyType);
					} else {
						break;	
					}
				}
			}

			$dataMap = self::getDataMap($object);

			if ($dataMap == NULL || !$dataMap->isPersistableProperty($propertyName)) {
				return $selectOptions;	
			}
	
			$tableName = $this->dataMapper->convertClassNameToTableName(get_class($object));
			$columnName = $dataMap->getColumnMap($propertyName)->getColumnName();
				
			// only convert select items which do not have a DB relation
			$columnConfig = $GLOBALS['TCA'][$tableName]['columns'][$columnName]['config'];
			if ($columnConfig['type'] == 'select' && count($columnConfig['items']) && !$columnConfig['foreign_table']) {
				foreach ($columnConfig['items'] as $option) {
					$selectOptions[$option[1]] = Tx_Extbase_Utility_Localization::translate($option[0], $this->controllerContext->getRequest()->getControllerExtensionName());
				}
			}
		}

		return $selectOptions;
	}

	/**
	 * Resolve the dataMap for the given object
	 * @param object $object The domain object to get the dataMap for
	 * @return Tx_Extbase_Persistence_Mapper_DataMap
	 */
	private function getDataMap($object) {
		$class = is_object($object) ? get_class($object) : $object;
		if (!isset($this->dataMaps[$class])) {
			$this->dataMaps[$class] = $this->dataMapper->getDataMap($class);
		}
		return $this->dataMaps[$class];	
	}
}


?>