Application Architecture for SwiftUI & Firebase

SwiftUI & Firestore: Updating Data

In this series of articles about SwiftUI and Firebase, we’re building a simple CRUD (Create, Read, Update, Delete) application that allows users to manage their book library.

In previous episodes,

• I showed you how to fetch data from Cloud Firestore in realtime
• we looked at making our apps safer by mapping Firestore documents using Codable
• we discovered how easy it is to add data to Cloud Firestore from a SwiftUI app

The following screen flow diagram gives you an impression of what we’ve achieved so far (in the blue frame):

You can use our sample app to add new books and display them in a list view. What’s missing is updating existing books or seeing their details.

In this episode, we’re going to implement the missing screens (in the pink frame) for viewing and editing a book’s details. The result will be a basic CRUD application that you can easily adapt to other data models.