League of Extraordinary FoundryVTT Developers•8mo ago

hook preCreateToken update token name

I'm trying to update the token name when dropping a token on a scene. I basically have something like this

Hooks.on("preCreateToken", async function (tokenDocument) {
  tokenDocument.actor.update({name: "some dude"});
});

Hooks.on("preCreateToken", async function (tokenDocument) {
  tokenDocument.actor.update({name: "some dude"});
});

I'm trying to follow the operation described here https://foundryvtt.com/article/v11-actor-delta/ but getting an error related to id and embeddedCollection how should I update a token in the preCreateToken hook

Version 11 Token Changes | Foundry Virtual Tabletop

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Solution:

so switching the hook to createToken and keeping everything else the same seems to get the functionality i'm looking for.

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12 Replies

Zhell•8mo ago

Are you updating the token name, or the actor name?

bluegreymouseOP•8mo ago

I'm trying to update the token name. i've also tried

Hooks.on("preCreateToken", async function (tokenDocument) {
  tokenDocument.update({name: "some dude"});
});

Hooks.on("preCreateToken", async function (tokenDocument) {
  tokenDocument.update({name: "some dude"});
});

and every variation in between i can think of 😅 I essentially want this but within the preCreateToken hook where canvas.tokens.controlled[0] is the token being created

canvas.tokens.controlled[0].document.update({name: "bla"})

canvas.tokens.controlled[0].document.update({name: "bla"})

Zhell•8mo ago

OK, so (1) You cant use an async function inside a "pre" hook like this. (2) You can't use update to change a document before it has been created; you use updateSource instead.

Hooks.on("preCreateToken", function(tokenDocument) {
  tokenDocument.updateSource({name: "some dude"});
});

Hooks.on("preCreateToken", function(tokenDocument) {
  tokenDocument.updateSource({name: "some dude"});
});

bluegreymouseOP•8mo ago

thanks. though I just tried this to the same result 😕 I don't get any errors but the token name remains the same as the actor or prototype token

Zhell•8mo ago

Did you make sure the script actually runs?

bluegreymouseOP•8mo ago

bluegreymouseOP•8mo ago

here it is on the line with a breakpoint i can step in and through the update.

bluegreymouseOP•8mo ago

but the token still ends up on the canvas without that name

Ethaks•8mo ago

I still spy some await in there, so your hook callback is still async, right? Foundry does not await hooks, so your callback has to be synchronous. Giving an async callback results in your function not running before the token creation data is sent to the server.

bluegreymouseOP•8mo ago

ah okay i see. I'm trying to roll on a rolltable for a random name to apply to a token. is that not something I can do in a hook since it can't contain async calls?

Solution

bluegreymouse•8mo ago

so switching the hook to createToken and keeping everything else the same seems to get the functionality i'm looking for.

bluegreymouseOP•8mo ago

Thanks for your help!

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hook preCreateToken update token name