mananjain0220/CoreData-Exercise

Little Lemon App - Core Data Integration

Overview

In this course, I've developed key skills in handling data within iOS apps using Core Data, interfacing with REST APIs, and managing user interactions. This README briefly outlines the Core Data functions implemented in the final project for the Little Lemon app.

Core Data Functions

1. retrieveMenuItems()

• Purpose: Fetches the food menu via a REST API.
• Method: Uses URLSession for asynchronous data retrieval.

2. decodeMenuItems(from data: Data)

• Purpose: Decodes JSON data into MenuItem structs.
• Method: Implements JSONDecoder and the Codable protocol.

3. saveItemsToCoreData(_ items: [MenuItem], context: NSManagedObjectContext)

• Purpose: Stores items in Core Data, checking for duplicates.
• Method: Uses a loop with dishExists checks and saves new entries.

4. fetchSortedAndFilteredDishes(searchText: String, context: NSManagedObjectContext)

• Purpose: Fetches and sorts dishes based on user input.
• Method: Applies NSPredicate for filtering and NSSortDescriptor for sorting.

5. showOrderConfirmation(for dish: Dish)

• Purpose: Displays a confirmation alert on selecting a dish.
• Method: Triggered by user interaction with UI elements.