Adding multiple categories to newly added products

[janskopljak]

So I've been dealing with this problem for quite some time and can't find a clear solution. So basically I'm adding new products directly into db using Product object. For now it went well but I can't manage to link new products with a category.

$cat_ids = [];

foreach ($value['kat_naziv'] as $cat_val) {

$cat_ids[] = (int)$luceed->selectCategoryIds($cat_val)[$cat_val]['id_category'];

}


$product->id_category = 3;

$product->id_category_default = 3;


$product->save();


$product->addToCategories($cat_ids);

So basically $cat_ids is an array of integers that i'm getting from db where name is something i pass as a parameter to selectCategoryIds;

What is the problem here why it wont associate newly created product with categories i give to it