public function isSalable($product = null)
{
$salable = parent::isSalable($product);
/*if (!is_null($salable)) {
return $salable;
}*/
$optionCollection = $this->getOptionsCollection($product);
if (!count($optionCollection->getItems())) {
return false;
}
$requiredOptionIds = array();
foreach ($optionCollection->getItems() as $option) {
if ($option->getRequired()) {
$requiredOptionIds[$option->getId()] = 0;
}
}
$selectionCollection = $this->getSelectionsCollection($optionCollection->getAllIds(), $product);
if (!count($selectionCollection->getItems())) {
return false;
}
$salableSelectionCount = 0;
foreach ($selectionCollection as $selection) {
if ($selection->isSalable()) {
$requiredOptionIds[$selection->getOptionId()] = 1;
$salableSelectionCount++;
}
}
return array_sum($requiredOptionIds) == count($requiredOptionIds) && $salableSelectionCount;
}
