Getting Records with multiple ids in eloquent - laravel

Question

Hello i am posting the id of several items along with their quantities to my server eg.:
[{"id": "1", "quantity": "2"}, {"id": "2", "quantity": "5"}, {"id": "3", "quanity": "10"}]
Now on my server I need to validate each of these ids and get certain values from their respective rows in my database table.
What i simply want to do is this:
foreach ($items as $item)
{
$row = Items::find($item);
$price = $row->price;
}
But here i am wondering if the foreach loop will have a huge impact on speed and performance since the items may be many.
My question is is there a way of doing this in laravel without using a foreach, loop, like a query that can fetch data based on an array of ids.

Answer 1

If you want to take all the price attributes of certain ids you can use query's builder whereIn method to achieve this.whereIn accepts an array of values and returns the rows corresponding to these values.It's also very cost efficient when it comes to performance
I see you are passing a json string, so if you where to use whereIn one solution might be like the following:
Example
//json string
$json = '[{"id": "1", "quantity": "2"}, {"id": "2", "quantity": "5"}, {"id": "3", "quanity": "10"}]';
//convert json to array
$json_toArray = json_decode($json,true);
//get id values from array
//If you are using php 5.5+ this will work, if you are using an older version you can use
//array_map method like this: $array_ids = array_map(function ($array) {return $array['id'];}, $json_toArray);
$array_ids = array_column($json_toArray, 'id');
//Finally execute the query
//Using Eloquent
$result = Items::whereIn('id', $array_ids)->select('price')->get();
//Using the Query Builder
$result = DB::table('items')->whereIn('id',$array_ids)->select('price')->get();