TYPO3 fluid selectbox viewhelper.

In the below example, the selectbox options are coming from locallang.

‘hotelclass’ => array(
‘exclude’ => 1,
‘label’ => ‘LLL:EXT:myext/Resources/Private/Language/locallang_db.xlf:tx_myext_domain_model_hotels.hotelclass’,
‘config’ => array(
‘type’ => ‘select’,
‘items’ => array(
array(‘LLL:EXT:myext/Resources/Private/Language/locallang_db.xlf:tx_myext_domain_model_hotels.hotelclass.2star’, ‘2’),
array(‘LLL:EXT:myext/Resources/Private/Language/locallang_db.xlf:tx_myext_domain_model_hotels.hotelclass.3star’, ‘3’),
array(‘LLL:EXT:myext/Resources/Private/Language/locallang_db.xlf:tx_myext_domain_model_hotels.hotelclass.5star’, ‘5’),
array(‘LLL:EXT:myext/Resources/Private/Language/locallang_db.xlf:tx_myext_domain_model_hotels.hotelclass.7star’, ‘7’),
),
‘size’ => 1,
‘maxitems’ => 1,
‘eval’ => ”
),
)

To display this select box in FE from, we can use the custom view helper.

To use the viewhelpler follow the following steps.

1. Create the file

myext/Classes/viewHelpers/TcaOptionsViewHelper.php

2. Add the below code

<?php
namespace TYPO3\Myext\ViewHelpers;

class TcaOptionsViewHelper extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper {

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

/**
* @var \TYPO3\CMS\Extbase\Persistence\Generic\Mapper\DataMapper
* @inject
*/
protected $dataMapper;

/**
* objectManager
*
* @var \TYPO3\CMS\Extbase\Object\ObjectManager
* @inject
*/
protected $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= $this->objectManager->get($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 = \TYPO3\CMS\Core\Utility\GeneralUtility::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]] = \TYPO3\CMS\Extbase\Utility\LocalizationUtility::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];
}
}
?>

3. Add the below lines in fluid template, that is intended to show FE form

{namespace custom=TYPO3\Myext\ViewHelpers}

<f:form.select property=”hotelclass” options=”{custom:TcaOptions(property:’hotelclass’,subject:’TYPO3\\Myext\\Domain\\Model\\Hotels’)}” />

4. The output source will be like this.

<select name=”tx_myext_hotels[hotels][hotelclass]”>
<option value=”2″>2 Star</option>
<option value=”3″>3 Star</option>
<option value=”5″>5 Star</option>
<option value=”7″>7 Star</option>
</select>

Thanks to: https://gist.github.com/anonymous/888297

 

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