[SOLVED] Prevent creating a document that has a property identical to another

is it possible to prevent creating a document that has a property (example: username) identical to another document?

You can use a unique index for that: https://appwrite.io/docs/databases#indexes

so I have to check if the username is available before creating an account right (and create a document) ?

You mean ID? Or email? The API would return an error if one already exists

No username. I mean my usercollection look like that (with some example) :

When I create a new user, I add a document with the usernameand extra info like language, bio, avatar etc...

But I dont want to have the same username in two different document

How about use the same custom id when creating the user and for the document id of this users collection?

So I thought it was easier to retrieve a document by its id rather than looking for the document that has a certain userId. I thought it was faster in terms of performance and server load, isn't it?

Yes, It's faster to do getDocument rather than listDocumebts

[SOLVED] Prevent creating a document that has a property identical to another