/**
* Process category data before delete
* update children count for parent category
* delete child categories
*
* @param \Magento\Framework\Object $object
* @return $this
*/
protected function _beforeDelete(\Magento\Framework\Object $object)
{
parent::_beforeDelete($object);
/**
* Update children count for all parent categories
*/
$parentIds = $object->getParentIds();
if ($parentIds) {
$childDecrease = $object->getChildrenCount() + 1;
// +1 is itself
$data = array('children_count' => new \Zend_Db_Expr('children_count - ' . $childDecrease));
$where = array('entity_id IN(?)' => $parentIds);
$this->_getWriteAdapter()->update($this->getEntityTable(), $data, $where);
}
$this->deleteChildren($object);
return $this;
}
