# Discourse toolkit to render forms

**URL:** https://meta.discourse.org/t/discourse-toolkit-to-render-forms/326439
**Category:** Developer Guides
**Created:** [September 13, 2024, 9:20pm UTC](https://meta.discourse.org/t/discourse-toolkit-to-render-forms/326439 "2024-09-13T21:20:27Z")
**Posts on this page:** 1
**Showing post:** 33

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### Author: ![merefield](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/merefield/32/176214_2.png) [@merefield](https://meta.discourse.org/u/merefield)
#### Post date: [December 23, 2025, 5:55pm UTC](https://meta.discourse.org/t/discourse-toolkit-to-render-forms/326439/33 "2025-12-23T17:55:56Z")

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> [@system](#):
>
> `validateUsername(name, value, data, { addError }) {`

this is incorrect - it should be `validateUsername(name, value, { data, addError }) {` or you will get a destructuring error.

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