Storing users in Convex

What is the recommended way to create a user in a Convex table corresponding to each user from my IDP? I was doing this

      convex.setAuth(idToken);
      const createUser = convex.mutation('user/create');
      createUser()
        .then((convexUser) => {
          setConvexUser(convexUser);
        });

      convex.setAuth(idToken);
      const createUser = convex.mutation('user/create');
      createUser()
        .then((convexUser) => {
          setConvexUser(convexUser);
        });

but I'm upgrading Convex and now it wants an async getIdToken function instead, and it seems the mutation does not wait for that token process to resolve, so I get an authentication error.

4 Replies

Dan MercerOP•3y ago

Heh, I should have checked the docs first I guess 😅 https://docs.convex.dev/using/auth#storing-users-in-convex

Authentication | Convex Developer Hub

Add authentication to your Convex app.

Dan MercerOP•3y ago

~~Switching to useMutation fixed it. Though I'm surprised useMutation waits for the auth to finish but convex.mutation doesn't.~~ Hmm actually that didn't fix it. There's still a race condition between fetching the token and calling the mutation. If I add a forced delay to the getIdToken function, it fails every time.

ballingt•3y ago

You can await the setAuth call / do a .then() on the promise that it now returns

const createUser = convex.mutation("user/create");
convex.setAuth(idToken).then(() => {
  createUser().then((convexUser) => {
    setConvexUser(convexUser);
  });
});

const createUser = convex.mutation("user/create");
convex.setAuth(idToken).then(() => {
  createUser().then((convexUser) => {
    setConvexUser(convexUser);
  });
});

but I can understand the expectation that this the mutation would wait for the new auth "if a mutation is invoked after a call to setAuth it will use a token returned from that new auth fetcher" seems fair, I can't think of a case where you wouldn't want this sorry about the trouble here, look for a behavior change here in an upcoming release

Dan MercerOP•3y ago

Ah I thought I checked for a return value from setAuth, but I guess I have weekend brain. 😅 That works, thanks so much!

Storing users in Convex

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