Conditional orderBy - laravel

Question

I'm building a filter function in a project.
I have a filter option "Show newest", "Show oldest" and a bunch of other options. I found a way how to implement conditional where clauses, but there doesn't seems to be a conditional orderBy class.
My conditional where clause looks like this:
$query->where(function($query) use ($request){
if( ! empty($request->input('prices')) ){
$opts = $request->prices;
$query->where('price_id', $opts[0]);
}
})
Is there a way to do this with a ->orderBy too?
UPDATE
return Auction::where('end_date', '>', Carbon::now() )
->where('locale', $locale)
->where('sold', 0)
->where(function($query) use ($request){
if( ! empty($request->input('prices')) ){
$opts = $request->prices;
$query->where('price_id', $opts[0]);
}
})->paginate(8);
How can I do it in the eloquent-way?

Answer 1

Of course, you can do it this way:
if ($request->input('id_desc')) {
$query = $query->orderBy('id', 'DESC');
}
or you can do it this way:
$columns = ['id','name',]; // here define columns you allow for sorting
$orderBy = ['ASC', DESC'];
$column = $request->input('order_by_column');
$type = $request->input('order_by_type');
if (!in_array($column, $columns)) {
$column = 'id';
}
if (!in_array($type , $orderBy )) {
$type = 'ASC';
}
$query = $query->orderBy($column, $type);
EDIT
Using your code:
$query = Auction::where('end_date', '>', Carbon::now() )
->where('locale', $locale)
->where('sold', 0)
->where(function($query) use ($request){
if( ! empty($request->input('prices')) ){
$opts = $request->prices;
$query->where('price_id', $opts[0]);
}
});
if ($request->input('id_desc')) {
$query = $query->orderBy('id', 'DESC');
}
return $query->paginate(8);