private function addorupdateProductCategories($data, $postedData)
{
$prodcutid = $data->id;
$cats = $postedData->categories;
$this->deleteProductCategoriesByPrdId($prodcutid);
foreach($cats as $cat)
{
if(!is_null($cat->id))
{
$attributes = array(
"product_id" => $prodcutid,
"category_id" => $cat->id
);
$data = \Productcategory::create($attributes);
}
}
}