laravel slow query issue optimization - php

Question

I want to optimize my query as it is taking long to run with current eloquents. I have two table, toys and product.
From each product one is reserved as sample of toy if not than it has to be updated as sample by the query so what i'm doing right now is below.
$toywithsample=product::select('toyid')->groupBy('toyid')->where('sample','yes')->get();
Above code is to get id of all the product with which have their one sample from in its product
$toywithoutsamples=toy::select('id')->whereNotIn('id',$toywithsample)->get();
Above code is to get id of all product which have no sample toy in
foreach($toywithoutsamples as $toywithoutsample){
$product=product::where('toyid',$toywithoutsample->id)
->where('sample','sale')->limit(1)
->update(['sample'=>'yes']);
}
Below is table structure
toy table
id,name,
product
id, toyid,sample

Answer 1

$toys_ids_with_sample = Product::where('sample', 'yes')->get()->pluck('toyId');
// get the products grouped by toyId.
$products = Product::whereNotIn('toyId', $toys_ids_with_sample)->where('sample', 'sale')->get()->groupBy('toyId');
// get the product ids whose sample field you want to change to
// yes.
$update_product_ids = [];
foreach($products as $toyId => $products){
// We will only pick the first one, as we have to change just 1.
array_push($update_product_ids, $products->first()->id);
}
Product::whereIn('id', $update_product_ids)->update(['sample' => 'yes']);
This reduces the total number of queries.