Formsnap

The goal of this library is to make working with the already incredible sveltekit-superforms even more pleasant, by wrapping it with accessible form components.

Installation

npm i formsnap sveltekit-superforms <your-schema-library>

Usage

You'll handle the initial Superforms setup just as you normally would, where you define a schema and return the form from your load function.

1. Define a Zod schema

// schemas.ts
import { z } from "zod";
export const settingsFormSchema = z.object({
	email: z.string().email(),
	bio: z.string().max(250).optional(),
	marketingEmails: z.boolean().default(true),
	language: z.enum(["en", "es", "fr"]).default(["en"]),
	theme: z.enum(["light", "dark"]).default(["light"]),
});

2. Return the form from your load function

// +page.server.ts
import { superValidate } from "sveltekit-superforms";
import { zod } from "sveltekit-superforms/adapters";
import type { PageServerLoad } from "./$types";
import { settingsFormSchema } from "./schemas";

export const load: PageServerLoad = async () => {
	return {
		form: await superValidate(zod(settingsFormSchema)),
	};
};

3. Construct the form in your page

<script lang="ts">
	import { Field, Label, FieldErrors, Control, Description, Fieldset, Legend } from "formsnap";
	import { settingsFormSchema } from "./schemas";
	import { superForm } from "sveltekit-superforms";
	import { zodClient } from "sveltekit-superforms/adapters";

	export let data;

	const form = superForm(data.form, {
		validators: zodClient(settingsFormSchema),
	});

	const { form: formData, enhance } = form;
</script>

<form method="POST" use:enhance>
	<Field {form} name="email">
		<Control let:attrs>
			<Label>Email</Label>
			<input type="email" {...attrs} bind:value={$formData.email} />
		</Control>
		<Description>We'll provide critical updates about your account via email.</Description>
		<FieldErrors />
	</Field>

	<Field {form} name="bio">
		<Control let:attrs>
			<Label>Bio</Label>
			<textarea bind:value={$formData.bio} {...attrs} />
		</Control>
		<FieldErrors />
	</Field>

	<Field {form} name="language">
		<Control let:attrs>
			<Label>Language</Label>
			<select {...attrs} bind:value={$formData.language}>
				<option value="en">English</option>
				<option value="es">Spanish</option>
				<option value="fr">French</option>
			</select>
		</Control>
		<FieldErrors />
	</Field>

	<Field {form} name="marketingEmails">
		<Control let:attrs>
			<Label>Receive marketing emails from us</Label>
			<input type="checkbox" {...attrs} bind:checked={$formData.marketingEmails} />
		</Control>
		<FieldErrors />
	</Field>

	<Fieldset {form} name="theme">
		<Legend>Select your theme</Legend>
		{#each ["light", "dark"] as theme}
			<Control let:attrs>
				<input {...attrs} type="radio" bind:group={$formData.theme} value={theme} />
				<Label>{theme}</Label>
			</Control>
		{/each}
		<FieldErrors />
	</Fieldset>

	<button type="submit">Submit</button>
</form>

Check out Formsnap.dev for more documentation.