PROJECT 12 - INVENTORY SYSTEM

Lab 3 Overview

In this lab, we’ll enhance the TicketManager program by adding a user interface that allows dynamic interaction with the ticketing system through a command-line menu. This lab will consolidate your understanding of how to apply object-oriented design to create practical, user-friendly applications.

Add Ticket

Notice the variable actions above. It is a dictionary where we can assign numerical menu choices (1-4) to the four different function in our program.
To add our first menu item "Add Ticket" we simply create the function and add it to the actions dictionary.
Our function will be callled add_ticket_ui as it is adding a user interface to our already existing facade method add_ticket.

Actions

actions = { '1': add_ticket_ui }

Function

def add_ticket_ui(manager):

    name = input("Enter ticket name: ")

    event_date = input("Enter event date (YYYY-MM-DD): ")

    price = float(input("Enter ticket price: "))

    ticket = Ticket(name, datetime.datetime.strptime(event_date, '%Y-%m-%d').date(), price)

    if manager.add_ticket(ticket):

        print("Ticket added successfully.")

    else:

        print("Failed to add ticket.")

Calling the Function

elif choice in actions:

    actions[choice](manager)

If the number chosen in the menu is in the dictionary (in this case '1'), then access the matching value (add_ticket_ui).
Notice it has (manager) at the end. The result is you get add_ticket_ui(manager), calling the function and passing manager into it.