How can I get a user’s name with their ID?

I’m creating a comments system in an app - only signed in users can comment. I want to store each user’s ID with the comment (each comment is a document), then get the user’s name to display on the page.

Either

• Use the Users sdk inside a cloud function
• Store the ID with the username - can be problematic in case the username has changed, for that you can go with this 👇 approach

2 Collections

1st collection will be

• comment
• date
• user_id

2nd collection will be the user details

• user_id
• user_name

So that's way you'll need to update only the 2nd collection when the user changes is name, and also you can make the second collection accessible without a having to use cloud function.

Seems a bit much - this is just an addon feature that’s not really required - it would just be a bit useful. I guess I’ll just store the name directly