Book Image

Core Data iOS Essentials

By : Bintu Harwani, B. M. Harwani
Book Image

Core Data iOS Essentials

By: Bintu Harwani, B. M. Harwani

Overview of this book

Core Data is the essential ingredient in data driven iOS apps. It's used for storing, retrieving, and manipulating application data in databases, XML, and binary formats. It's an essential component for iPhone, iPod Touch, and iPad apps.Core Data Essentials provides a clear, readable guide to the most useful aspects of Core Data. Built around a realistic example app, the book showcases the most important aspects of Core Data development in the context of a complete, functioning app written in Objective C.The book starts with a tour of how the app works. Then you'll see how to easily display data using the Table View. You'll learn how to develop an appropriate data model that fits the needs of your app, then implement that model as updatable data objects. You'll see how to update data and build relationships between objects and learn how Core Data can work with search, and how to provide your users with friendly data editing features.
Table of Contents (19 chapters)
Core Data iOS Essentials
About the Author
About the Reviewers

Chapter 11. Displaying the Products for Sale and Updating the Stock

Our data-driven application is almost complete. Just two more features need to be added. They are as follows:

  • Auto displaying of products available for sale - In Chapter 8, Entering, Saving, Listing, and Deleting the Records of the Products Sold to the Customers, we entered the information of the product sold to the customer manually, that is, we entered the product name, price, and quantity sold to the customer manually; we need to remember the list of products that are available for sale and their price. What we want now, is to automatically display the list of products available for sale from the MasterProduct entity and we just need to click the product that is sold to the customer. Also we would want the product name, its image, and price to appear automatically on selecting the product, so that we just have to enter the quantity sold to the customer.

  • The second thing is to update the stock, that is, we want the quantity...