Where NOT in pivot table

Question

In Laravel we can setup relationships like so:

class User {
    public function items()
    {
        return $this->belongsToMany(\'Item\');
    }
}
         


        

Answer 1

How about left join?

Assuming the tables are users, items and item_user find all items not associated with the user 123:

DB::table('items')->leftJoin(
    'item_user', function ($join) {
        $join->on('items.id', '=', 'item_user.item_id')
             ->where('item_user.user_id', '=', 123);
    })
    ->whereNull('item_user.item_id')
    ->get();