/**
* @param mixed $candidate
* @param RenderingContextInterface $renderingContext
* @return mixed
*/
protected static function getTemplateVariableOrValueItself($candidate, RenderingContextInterface $renderingContext)
{
$variables = $renderingContext->getVariableProvider()->getAll();
$extractor = new VariableExtractor();
$suspect = $extractor->getByPath($variables, $candidate);
if (NULL === $suspect) {
return $candidate;
}
return $suspect;
}
/**
* Groups the given array by the specified groupBy property.
*
* @param array $elements The array / traversable object to be grouped
* @param string $groupBy Group by this property
* @return array The grouped array in the form array('keys' => array('key1' => [key1value], 'key2' => [key2value], ...), 'values' => array('key1' => array([key1value] => [element1]), ...), ...)
* @throws ViewHelper\Exception
*/
protected function groupElements(array $elements, $groupBy)
{
$extractor = new VariableExtractor();
$groups = array('keys' => array(), 'values' => array());
foreach ($elements as $key => $value) {
if (is_array($value)) {
$currentGroupIndex = isset($value[$groupBy]) ? $value[$groupBy] : NULL;
} elseif (is_object($value)) {
$currentGroupIndex = $extractor->getByPath($value, $groupBy);
} else {
throw new ViewHelper\Exception('GroupedForViewHelper only supports multi-dimensional arrays and objects', 1253120365);
}
$currentGroupKeyValue = $currentGroupIndex;
if ($currentGroupIndex instanceof \DateTime) {
$currentGroupIndex = $currentGroupIndex->format(\DateTime::RFC850);
} elseif (is_object($currentGroupIndex)) {
$currentGroupIndex = spl_object_hash($currentGroupIndex);
}
$groups['keys'][$currentGroupIndex] = $currentGroupKeyValue;
$groups['values'][$currentGroupIndex][$key] = $value;
}
return $groups;
}