{foo}
*
* Output::
*
* 1234
*
* Output array key
* ----------------
*
* ::
*
*
*
* Output::
*
*
* - fruit1: apple
* - fruit2: pear
* - fruit3: banana
* - fruit4: cherry
*
*
* Iteration information
* ---------------------
*
* ::
*
*
*
* - Index: {fooIterator.index} Cycle: {fooIterator.cycle} Total: {fooIterator.total}{f:if(condition: fooIterator.isEven, then: ' Even')}{f:if(condition: fooIterator.isOdd, then: ' Odd')}{f:if(condition: fooIterator.isFirst, then: ' First')}{f:if(condition: fooIterator.isLast, then: ' Last')}
*
*
*
* Output::
*
*
* - Index: 0 Cycle: 1 Total: 4 Odd First
* - Index: 1 Cycle: 2 Total: 4 Even
* - Index: 2 Cycle: 3 Total: 4 Odd
* - Index: 3 Cycle: 4 Total: 4 Even Last
*
*
* @api
* @see https://docs.typo3.org/permalink/fluid:typo3fluid-fluid-for
*/
class ForViewHelper extends AbstractViewHelper
{
/**
* @var bool
*/
protected $escapeOutput = false;
public function initializeArguments()
{
$this->registerArgument('each', 'array', 'The array or \SplObjectStorage to iterated over', true);
$this->registerArgument('as', 'string', 'The name of the iteration variable', true);
$this->registerArgument('key', 'string', 'Variable to assign array key to');
$this->registerArgument('reverse', 'boolean', 'If true, iterates in reverse', false, false);
$this->registerArgument('iteration', 'string', 'The name of the variable to store iteration information (index, cycle, total, isFirst, isLast, isEven, isOdd)');
}
/**
* @return string
* @throws ViewHelper\Exception
*/
public function render()
{
if (!isset($this->arguments['each'])) {
return '';
}
if (is_object($this->arguments['each']) && !$this->arguments['each'] instanceof \Traversable) {
throw new ViewHelper\Exception('ForViewHelper only supports arrays and objects implementing \Traversable interface', 1248728393);
}
if ($this->arguments['reverse'] === true) {
$this->arguments['each'] = array_reverse(iterator_to_array($this->arguments['each']), true);
}
if (isset($this->arguments['iteration'])) {
$iterationData = [
'index' => 0,
'cycle' => 1,
'total' => count($this->arguments['each']),
];
}
$globalVariableProvider = $this->renderingContext->getVariableProvider();
$localVariableProvider = new StandardVariableProvider();
$this->renderingContext->setVariableProvider(new ScopedVariableProvider($globalVariableProvider, $localVariableProvider));
$output = '';
foreach ($this->arguments['each'] as $keyValue => $singleElement) {
$localVariableProvider->add($this->arguments['as'], $singleElement);
if (isset($this->arguments['key'])) {
$localVariableProvider->add($this->arguments['key'], $keyValue);
}
if (isset($this->arguments['iteration'])) {
$iterationData['isFirst'] = $iterationData['cycle'] === 1;
$iterationData['isLast'] = $iterationData['cycle'] === $iterationData['total'];
$iterationData['isEven'] = $iterationData['cycle'] % 2 === 0;
$iterationData['isOdd'] = !$iterationData['isEven'];
$localVariableProvider->add($this->arguments['iteration'], $iterationData);
$iterationData['index']++;
$iterationData['cycle']++;
}
$output .= $this->renderChildren();
}
$this->renderingContext->setVariableProvider($globalVariableProvider);
return $output;
}
}