Form handling with XForm component and useFormBuilder. Use when creating forms, handling validation errors, managing form state, or building form-based slideovers and modals.
Nuxt Forms
Form handling with XForm component and validation error display.
Core Concepts
forms.md - XForm, useFormBuilder, validation patterns
XForm Component
<XForm
ref="formRef"
url="/api/posts"
method="POST"
:data="formData"
:waiting="waitingFor.posts.creating"
@submit="onSubmit"
@success="onSuccess"
@error="onError"
>
<UFormField label="Title" name="title" :error="form?.errors.first('title')">
<UInput v-model="formData.title" />
</UFormField>
<template #actions>
<UButton type="submit" label="Create" :loading="form?.processing" />
</template>
</XForm>
Form Data Pattern
const formData = ref<CreatePostData>({
title: '',
content: '',
authorId: '',
isDraft: true,
})
const onSubmit = async (data: CreatePostData) => {
await createPostAction(data)
}
const onSuccess = () => {
emits('close', true)
}
Validation Errors
// Access errors
form.errors.has('title') // boolean
form.errors.first('title') // string | undefined
form.errors.get('title') // string[] | undefined
form.errors.any() // boolean
// Display in template
<UFormField label="Title" name="title" :error="form?.errors.first('title')">
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