[legacy-framework] Add setPublicDataForUser() — useful for updating the role of another user

[lksnmnn]

Closes: blitz-js/legacy-framework#144
Documentation PR: blitz-js/blitzjs.com#500

What are the changes and their implications?

This change adds a new API to update a user's publicData across all of the user's active sessions. Among other things this feature solves the common usecase, where a user's role is changed and the change should be reflected immediatly, i.e., when the user is denoted from "admin" to "user".

Bug Checklist

• Integration test added (see test docs if needed)

Feature Checklist

• Integration test added (see test docs if needed)
• Documentation added/updated (submit PR to blitzjs.com repo)

[flybayer]

Thank you!!

[lksnmnn]

There is one thing I might want to test with this, that is actually being logged in with both users and check what happens to the user, when his publiData is being updated.

In my version of this function, which I posted in the linked issue, it worked, but when I changed browsers to quickly after updating the role, the user got weird invalid session and CSRF errors. Which is probably a bug in the session logic, but using this new API could trigger this.

[flybayer]

@lksnmnn ok good to know. You are going to test?

[lksnmnn]

Yes, I will try to reproduce this in the auth example, so I can debug and hopefully find the issue. From outside it “felt” similar to the issue I was having with using gSSP (https://github.com/blitz-js/blitz/issues/2448).

But I wont be able to start this before Sunday I guess.

[lksnmnn]

I could not reproduce this bug in the auth example. So I guess the issue was my code doing something weird. 🚀

[flybayer]

Ok thank you, we'll roll with this and address the bug later if it shows up

[blitzjs-bot]

Added @lksnmnn contributions for code and test