Is there a way to select fields from an eager loaded table in Laravel?

Question

So I have a couple of relational tables defined below

Parent DB:

public function backorderQuantities(){
        return $this->hasMany(BackorderQuantity:         


        

Answer 1

you can select columns of eger loading by using with :

 Item::with('backorderQuantities:QUANTITY,...');

don't forgot pass forigen key of backorderQuantities table to selected columns

Edit :

for sorting by child column you should use join statement :

 Item::select('items.*')->leftJoin('items.ITEMNMBR','=','backorderQuantities.ITEMNMBR')->groupBy('backorderQuantities.ITEMNMBR')->orderBy('backorderQuantities.backorderQuantities')