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Struggling with migrating user creation code from Firebase v8 to v9? This guide guides you step-by-step to ensure a smooth transition while adding user information with images and usernames.
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This video is based on the question https://stackoverflow.com/q/72144382/ asked by the user 'Naomi Matari' ( https://stackoverflow.com/u/19054525/ ) and on the answer https://stackoverflow.com/a/72144603/ provided by the user 'codmitu' ( https://stackoverflow.com/u/14548500/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Add New User Information from Firebase v8 to v9: A Complete Guide

When working with Firebase, migrating from one version to another can often feel daunting, especially when your existing code involves user creation and management. If you've been using Firebase v8 to create user accounts along with their images and usernames, shifting your code to Firebase v9 may seem challenging. Fortunately, with a little guidance, you can make this transition smoothly.

In this post, we’ll explore how to update your Firebase code to add user information such as images and usernames, using the new syntax and features introduced in Firebase v9.

The Challenge

You may have had successful code snippets in Firebase v8 like the following:

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

Now, it’s time to upgrade this code to work with Firebase v9, which uses a modular approach for tree-shaking.

The Solution

To successfully add user information in Firebase v9, you need to update your existing code, focusing on how you manage storage and Firestore interactions. Let's break it down step by step.

Step 1: Import Required Functions

In Firebase v9, you need to import specific functions that you'll utilize in your code. The important imports for our task will be:

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

Step 2: Upload the Image

Instead of placing the image in a specific path directly, you will create a reference and use the uploadBytesResumable method to manage the upload task.

Here is how you can do it:

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

Step 3: Manage Upload State

You can track the upload progress by listening to the state_changed events. Here’s how to implement that:

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

Step 4: Update User Information in Firestore

Finally, after getting the download URL of the uploaded image, you should update your user profile in Firestore while ensuring you use { merge: true } to prevent overwriting existing data.

Conclusion

Migrating your code from Firebase v8 to v9 can seem like a significant task, but by understanding the new modular approach and leveraging the updated syntax, you can seamlessly enhance your application. This guide has walked through uploading images, tracking upload progress, and updating user information, ensuring your new users have their images and usernames correctly set in your database.

If you have any questions or need further assistance, feel free to reach out. Happy coding!