RadioField

Description

A controlled radio input component with validation states and a label.

Installation

yarn add @commercetools-uikit/radio-field

npm --save install @commercetools-uikit/radio-field

Additionally install the peer dependencies (if not present)

yarn add react

npm --save install react

Usage

import RadioField from '@commercetools-uikit/radio-field';
import RadioInput from '@commercetools-uikit/radio-input';

const Example = () => (
  <RadioField
    title="Fruits"
    name="fruits"
    value="apple"
    onChange={(event) => alert(event.target.value)}
  >
    <RadioInput.Option value="apple">{'Apple'}</RadioInput.Option>
    <RadioInput.Option value="banana">{'Banana'}</RadioInput.Option>
  </RadioField>
);

export default Example;

Properties

Props	Type	Required	Default	Description
id	string			Used as HTML id property. An id is auto-generated when it is not specified.
horizontalConstraint	union Possible values: , 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 'scale', 'auto'		'scale'	Horizontal size limit of the input fields.
errors	Record			A map of errors. Error messages for known errors are rendered automatically. Unknown errors will be forwarded to renderError.
renderError	Function See signature.			Called with custom errors. This function can return a message which will be wrapped in an ErrorMessage. It can also return null to show no error.
isRequired	boolean			Indicates if the value is required. Shows an the "required asterisk" if so.
touched	boolean			Indicates whether the field was touched. Errors will only be shown when the field was touched.
name	string			Used as HTML name of the input component.
value	string	✅		Value of the input component.
onChange	ChangeEventHandler			Called with an event containing the new value. Required when input is not read only. Parent should pass it back as value.
onBlur	FocusEventHandler			Called when input is blurred
onFocus	FocusEventHandler			Called when input is focused
isDisabled	boolean			Indicates that the input cannot be modified (e.g not authorized, or changes currently saving).
isReadOnly	boolean			Indicates that the field is displaying read-only content
direction	union Possible values: 'stack' , 'inline'			Rendering direction of the radio RadioInput.Options
directionProps	Partial			Passes props of the Spacings.Stack or Spacings.Inline, depending on the chosen direction
children	ReactNode	✅		At least one RadioInput.Option component or another node (mixed children are allowed)
title	union Possible values: string , ReactNode	✅		Title of the label
hint	union Possible values: string , ReactNode			Hint for the label. Provides a supplementary but important information regarding the behaviour of the input (e.g warn about uniqueness of a field, when it can only be set once), whereas description can describe it in more depth. Can also receive a hintIcon.
description	union Possible values: string , ReactNode			Provides a description for the title.
onInfoButtonClick	Function See signature.			Function called when info button is pressed. Info button will only be visible when this prop is passed.
hintIcon	ReactElement			Icon to be displayed beside the hint text. Will only get rendered when hint is passed as well.
badge	ReactNode			Badge to be displayed beside the label. Might be used to display additional information about the content of the field (E.g verified email)

Signatures

Signature renderError

(key: string, error?: boolean) => ReactNode;

Signature onInfoButtonClick

(
  event: MouseEvent<HTMLButtonElement> | KeyboardEvent<HTMLButtonElement>
) => void

data-* props

The component further forwards all data- attributes to the underlying RadioInput component.

RadioInput.Option

See RadioInput README for the list of props.

errors

This object is a key-value map. The renderError prop will be called for each entry with the key and the value. The return value will be rendered inside an ErrorMessage component underneath the input.

The RadioField supports some errors out of the box. Return undefined from renderError for these and the default errors will be shown instead. This prevents consumers from having to reimplement the same error messages for known errors while still keeping the flexibility of showing custom error messages for them.

When the key is known, and when the value is truthy, and when renderError returned undefined for that error entry, then the RadioField will render an appropriate error automatically.

Known error keys are:

• missing: tells the user that this field is required

Main Functions and use cases are:

• Single option selection field in login forms