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[Regression]: v2 server functions retrieve URLSearchParams from form posts instead of FormData聽#2307
Description
Duplicates
- I have searched the existing issues
Latest version
- I have tested the latest version
Current behavior 馃槸
When making a form post to a server function without explicit enctype it's first param is a URLSearchParams object.
Expected behavior 馃
The server function should retrieve a FormData object from a form post.
Steps to reproduce 馃暪
From the basic template, change the index route to the code below, start the server and click on the Hello button:
import { Title } from "@solidjs/meta";
import { action } from "@solidjs/router";
import Counter from "~/components/Counter";
const hello = action(async (data: FormData) => {
"use server"
console.log(data)
}, 'hello')
export default function Home() {
return (
<main>
<Title>Hello World</Title>
<h1>Hello world!</h1>
<Counter />
<form>
<input name="name" value="james" />
<button name="hello" value="world" formAction={hello} formMethod="post">Hello</button>
</form>
<p>
Visit{" "}
<a href="https://start.solidjs.com" target="_blank">
start.solidjs.com
</a>{" "}
to learn how to build SolidStart apps.
</p>
</main>
);
}Context 馃敠
No response
Your environment 馃寧
OS: Linux
Browser: Zen (Firefox)
Node: v24.18.0
Activity
[-][Regression]: v2 server functions retrieve URLSearchParams instead of FormData from non-js forms[/-][+][Regression]: v2 server functions retrieve URLSearchParams from form posts instead of FormData[/+]lxsmnsyc commentedon Aug 21, 2026
Intended, due to inconsistent parsing that is v1, made it consistent in v2. Documentation needs to be updated.
katywings commentedon Aug 23, 2026
Closing this for now 馃憤. I update the docs when I have some spare time.