Updating One to many relation in laravel 5.3

Question

I want to update a one to many relationship. For example I have a model called Product

class Product extends Model
{
    protected $primaryKey         


        

Answer 1

You override your $array in the loop. After the for loop, $array has possibly the last size.

In general, your query is correct, but it's about the place of execute. It should be like below:

if (isset($request->$selectedSize)) { // or is_int() ?
    $Size = Size::where('product_id', $request->id)->update(['size'=> $request->$selectedSize]);
}