public static void show(Long id) {
Bowl bowl = Bowl.findById(id);
List<Participant> bowlParticipants = Participant.calculateShares(bowl);
List<Bill> bills = Bill.generateByBowl(bowl);
render(bowl, bowlParticipants, bills);
}
public static void expense(Long id) {
Expense expense = Expense.findById(id);
List<Bill> bills = Bill.generateByExpense(expense);
render(expense, bills);
}