EloquentAirlineRepository

<?php
namespace Game\Repositories;

use Airline;

class EloquentAirlineRepository implements AirlineRepositoryInterface
{
    public function getById($id)
    {
        return Airline::find($id);
    }
    public function updateFunds($airline_id, $amount)
    {
        $airline = $this->getById($airline_id);
        $airline->increment('funds', $amount);

        return $airline->funds;
    }

    public function signDeal($airline_id, $airport_id, $fees)
    {
        $airline = $this->getById($airline_id);
        $airline->deals()->attach($airport_id, $fees);
        return true;
    }
}