/**
* @static
* @param ElementInterface $element
* @param array|\ArrayAccess|\Traversable $data
* @return null|array|\ArrayAccess|\Traversable
*/
protected static function filterFormData(ElementInterface $element, $data)
{
if (!$data && $element instanceof Collection && $element->getOption('count') == 0) {
return null;
}
if (is_array($data)) {
if ($element instanceof Collection) {
// Collections are to be recursed
foreach ($data as $key => $value) {
$data[$key] = static::filterFormData($element->getTargetElement(), $value);
}
} elseif ($element instanceof FieldsetInterface) {
// Fieldsets are to be recursed
foreach ($data as $key => $value) {
if ($element->has($key)) {
$data[$key] = static::filterFormData($element->get($key), $value);
} else {
unset($data[$key]);
}
}
} else {
// Array for a normal element, make sure there is ANY data in the array
if (count(array_filter($data)) > 0) {
return $data;
} else {
return null;
// null?;
}
}
}
return $data;
}
