Load a TextEditor with Previously Saved CoreData in SwiftUI

Описание: Discover how to effectively load and edit previously saved CoreData in a SwiftUI TextEditor for your notes app.
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This video is based on the question https://stackoverflow.com/q/64557406/ asked by the user 'PaulBarr' ( https://stackoverflow.com/u/3460300/ ) and on the answer https://stackoverflow.com/a/64558361/ provided by the user 'Asperi' ( https://stackoverflow.com/u/12299030/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Load TextEditor with Previously Saved CoreData in SwiftUI

Building a notes app can be an exciting project, especially when working with SwiftUI and CoreData. One common feature in such applications is the ability to load previously saved text into a TextEditor for editing. If you're facing challenges doing this, fear not! In this guide, we’ll explore how to effectively load and edit previously saved CoreData in a SwiftUI TextEditor.

Understanding the Problem

You’ve created an application using SwiftUI with an entity called ApplicationQuestion. You've already implemented saving user input via a TextEditor, but now you want that text to be editable when the user reopens the app. The main concern arises from how to properly load existing data from CoreData into the TextEditor so that it's not lost upon saving new content.

Analyzing Your Current Implementation

Your existing code looks something like this:

[[See Video to Reveal this Text or Code Snippet]]

As it stands, the initial value of answerText is set to an empty string. This is the crux of the problem—you need to pull in the actual saved answer from your CoreData entity, question.answer.

The Solution: Loading Text into the TextEditor

To allow the TextEditor to load previously saved text, you'll need to modify the answerComposer structure slightly. Here’s how:

Step 1: Adjust the State Variable Initialization

Instead of initializing answerText with an empty string, you’ll want to initialize it with the saved value from your ApplicationQuestion entity.

Modified Code

Here's how your updated code will look:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of Changes

Initialization of answerText: In the init method, we set self._answerText to start with the existing answer stored in your CoreData entity. This allows the TextEditor to display the previously saved content when the user navigates back to this view.

Maintaining User Input: The updated state binding ensures any modifications made in the TextEditor are retained until the user saves and updates the CoreData entry.

Conclusion

By adjusting the initial value of the answerText variable in your answerComposer, you ensure a seamless user experience where the notes can be easily loaded and edited. This small change brings your app one step closer to being a polished product! Happy coding!