Filtering ranges based on a column from latest model in relationship, then a column from a parent model

Question

I have two tables: auctions and bids . In auctions , I have a start_amount field and in bids , amount . Both tables also has created_at and modified_at timestamp columns. I want to be able to retrieve a list of auctions that match the highest (or latest, however you look at it) bid within a certain range.

I've been working at it for the past week and have only managed to filter based on all bids rather than the latest (or minimum) bid ( start_amount included.) How would I achieve what I am looking for?

The code that I've tried:

if (request()->has('bid_range'))
    $auctions->with(['bids' => function ($query) use ($bid_min, $bid_max) {
        $query->whereBetween('amount', [$bid_min, $bid_max])->orWhereBetween('start_amount', [$bid_min, $bid_max])->orderBy('created_at', 'desc')->get();
    }]);

Answer 1

Correct me if I'm wrong, but you probably trying to do this:

select *
from auctions
where exists 
    (select 1 
    from bids 
    where amount > 10 and amount < 20
    and bids.auctions_id = auction.id)

So, the Laravel way:

DB::table('auctions')
        ->whereExists(function ($query) use ($bid_min, $bid_max) {
            $query->from('bids')
                  ->whereRaw("'amount' > $bid_min and 'amount' < $bid_max")
                  ->whereRaw('bids.auctions_id = auction.id');
        })
        ->get();

That's what you want?