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ui/docs/content/2.components/form-group.md
Benjamin Canac e92be71749 docs: new structure (#1282)
Co-authored-by: Sébastien Chopin <seb@nuxt.com>
2024-01-30 11:24:02 +01:00

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---
title: FormGroup
description: Display a label and additional informations around a form element.
links:
- label: GitHub
icon: i-simple-icons-github
to: https://github.com/nuxt/ui/blob/dev/src/runtime/components/forms/FormGroup.vue
---
## Usage
Use the FormGroup component around an [Input](/components/input), [Textarea](/components/textarea), [Select](/components/select) or a [SelectMenu](/components/select-menu) with a `label`. The `<label>` will automatically be associated with the form element so it gets focused on click.
::component-card
---
props:
label: 'Email'
code: >-
<UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
---
#default
:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
::
### Required
Use the `required` prop to indicate that the form element is required.
::component-card
---
props:
label: 'Email'
required: true
code: >-
<UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
---
#default
:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
::
### Description
Use the `description` prop to display a description below the label.
::component-card
---
props:
label: 'Email'
description: "We'll only use this for spam."
code: >-
<UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
---
#default
:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
::
### Hint
Use the `hint` prop to display a hint above the form element.
::component-card
---
props:
label: 'Email'
hint: 'Optional'
code: >-
<UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
---
#default
:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
::
### Help
Use the `help` prop to display an help message below the form element.
::component-card
---
props:
label: 'Email'
help: 'We will never share your email with anyone else.'
code: >-
<UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
---
#default
:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
::
### Error
Use the `error` prop to display an error message below the form element.
When used together with the `help` prop, the `error` prop will take precedence.
:component-example{component="form-group-error-example"}
::callout{icon="i-heroicons-light-bulb"}
The `error` prop will automatically set the `color` prop of the form element to `red`.
::
You can also use the `error` prop as a boolean to mark the form element as invalid.
::component-card
---
props:
label: 'Email'
error: true
excludedProps:
- ui
- error
- label
code: >-
<UInput placeholder="you@example.com" />
---
#default
:u-input{model-value="benjamincanac" placeholder="you@example.com"}
::
::callout{icon="i-heroicons-light-bulb" to="/components/form"}
Learn more about form validation in the `Form` component.
::
### Size
Use the `size` prop to change the size of the label and the form element.
::component-card
---
props:
size: 'xl'
label: 'Email'
hint: 'Optional'
description: "We'll only use this for spam."
help: 'We will never share your email with anyone else.'
excludedProps:
- label
- hint
- description
- help
code: >-
<UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
---
#default
:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
::
::callout{icon="i-heroicons-exclamation-triangle"}
This will only work with form elements that support the `size` prop.
::
### Eager Validation
By default, validation is only triggered after the initial `blur` event. This is to prevent the form from being validated as the user is typing. You can override this behavior by setting the `eager-validation` prop to `true`
:component-example{component="form-group-eager-validation-example"}
## Slots
### `label`
Use the `#label` slot to set the custom content for label.
::component-card
---
slots:
label: <UAvatar src="https://avatars.githubusercontent.com/u/739984?v=4" size="3xs" />
default: <UInput model-value="benjamincanac" placeholder="you@example.com" />
---
#label
:u-avatar{src="https://avatars.githubusercontent.com/u/739984?v=4" size="3xs" class="mr-2 inline-flex"}
#default
:u-input{model-value="benjamincanac" placeholder="you@example.com"}
::
### `description`
Use the `#description` slot to set the custom content for description.
::component-card
---
slots:
description: Write only valid email address <UIcon name="i-heroicons-arrow-right-20-solid" />
default: <UInput model-value="benjamincanac" placeholder="you@example.com" />
props:
label: 'Email'
---
#description
Write only valid email address :u-icon{name="i-heroicons-information-circle" class="align-middle"}
#default
:u-input{model-value="benjamincanac" placeholder="you@example.com"}
::
### `hint`
Use the `#hint` slot to set the custom content for hint.
::component-card
---
slots:
hint: <UIcon name="i-heroicons-arrow-right-20-solid" />
default: <UInput model-value="benjamincanac" placeholder="you@example.com" />
props:
label: 'Step 1'
---
#hint
:u-icon{name="i-heroicons-arrow-right-20-solid"}
#default
:u-input{model-value="benjamincanac" placeholder="you@example.com"}
::
### `help`
Use the `#help` slot to set the custom content for help.
::component-card
---
slots:
help: Here are some examples <UIcon name="i-heroicons-arrow-right-20-solid" />
default: <UInput model-value="benjamincanac" placeholder="you@example.com" />
props:
label: 'Email'
---
#help
Here are some examples :u-icon{name="i-heroicons-information-circle" class="align-middle"}
#default
:u-input{model-value="benjamincanac" placeholder="you@example.com"}
::
### `error`
Use the `#error` slot to set the custom content for error.
::component-example
---
component: 'form-group-error-slot-example'
componentProps:
class: 'w-60'
---
::
## Props
:component-props
## Config
:component-preset