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JsonField

Github
Storybook

A textarea component for JSON input

Importing

The component can be imported via:

import { JsonField } from '@customerio/pluma-components/react';

Usage

The JsonField component is a thin wrapper around TextArea that automatically validates JSON input on blur. It supports all the same props as TextArea.

import { JsonField } from '@customerio/pluma-components/react';
import { useState } from 'react';

export default function Example() {
	const [value, setValue] = useState('{"name": "John"}');

	return <JsonField
		label="JSON Input"
		value={value}
		onInput={(e) => setValue(e.target.value)}
	/>
}

Automatic validation

The JsonField component automatically validates JSON on blur. If the JSON is invalid, an error message will be displayed. The error is cleared when the field is focused again.

Type invalid JSON and click outside to see validation
import { JsonField } from '@customerio/pluma-components/react';
import { useState } from 'react';

export default function Example() {
	const [value, setValue] = useState('');

	return <JsonField
		label="JSON Input"
		description="Type invalid JSON and click outside to see validation"
		value={value}
		onInput={(e) => setValue(e.target.value)}
	/>
}

Custom error messages

If you provide a custom error prop, it will override the automatic validation error.

This field is required
import { JsonField } from '@customerio/pluma-components/react';
import { useState } from 'react';

export default function Example() {
	const [value, setValue] = useState('{"valid": "json"}');

	return <JsonField
		label="JSON Input"
		value={value}
		error="This field is required"
		onInput={(e) => setValue(e.target.value)}
	/>
}

All TextArea props supported

Since JsonField extends TextArea, all TextArea props work including placeholder, rows, minRows, maxRows, resize, etc.

Enter your JSON configuration
import { JsonField } from '@customerio/pluma-components/react';
import { useState } from 'react';

export default function Example() {
	const [value, setValue] = useState('');

	return <JsonField
		label="Configuration"
		placeholder='{"key": "value"}'
		description="Enter your JSON configuration"
		minRows={3}
		maxRows={10}
		value={value}
		onInput={(e) => setValue(e.target.value)}
	/>
}

API

PlumaJsonField extends Box

ariaDescribedby  string | undefined

Element (or elements) that describe the form field. Also used for error messages, as aria-errormessage isn't supported in all assistive technologies: https://a11ysupport.io/tech/aria/aria-errormessage_attribute

ariaLabel  string | undefined

String value that labels the form field.

ariaLabelledby  string | undefined

Element (or elements) that label the form field.

cols  number | undefined

Visible width of the textarea.

description  ContentT | undefined

A description for the field, providing additional context or hints.

error  boolean | ContentT | undefined

An error message associated with the form field. Boolean: Ember-only. If the error named block is used, this prop can be set to true to indicate an error is present, which will make the error block render.

id  string | undefined

An optional id to be assigned to the input element. Also used to generate ids for labels and error messages. If one isn't provided, it will be generated.

isDisabled  boolean | undefined

Whether the form field is disabled.

isFullWidth  boolean | undefined

Default:true

Whether the textarea should stretch to fill the width of its container. Set this to false if the textarea needs to be resized horizontally (via resize both or horizontal).

isInvalid  boolean | undefined

Whether the form field is in an invalid state.

label  ContentT | undefined

The label text to show with the form field.

maxRows  number | undefined

Maximum number of rows when auto-growing.

minRows  number | undefined

Minimum number of rows when auto-growing.

name  string | undefined

The name of the textarea.

onKeyDown  ((event: KeyboardEvent) => void) | undefined

The keydown event handler for the textarea element.

placeholder  string | null | undefined

Placeholder text to show inside the field.

resize  "none" | "both" | "horizontal" | "vertical" | undefined

Default:vertical

Whether the textarea is resizable.

rows  number | undefined

Number of visible text lines.

shouldAllowAutofill  boolean | undefined

Whether to allow browser autofill and password managers. When false (default), adds attributes to disable password managers (1Password, LastPass, Bitwarden, Dashlane). Set to true for fields where autofill is desired (e.g., email, password, address fields).

shouldAppendAriaDescribedbyId  boolean | undefined

Whether the generated description id should be included in the input's aria-describedby attribute. Disable this when a label`` tag surrounds the input as well as it's description text, for example in an OptionCard` component.

shouldAppendAriaLabelledbyId  boolean | undefined

Whether the generated label id should be included in the input's aria-labelledby attribute. Disable this when the label tag surrounds the input as well as it's label text, for example in an OptionCard component.

shouldSubmitOnEnter  boolean | undefined

Default:false

When true, pressing Enter key will submit the form instead of creating a new line.

shouldValidateLabelPresence  boolean | undefined

By default, form elements will throw an error if no label or aria-label is provided. Disable this to suppress the error, for example when building a custom form element, and you want to handle labeling yourself.

unsafe_descriptionClassName  string | undefined

Additional classes to be applied to the description element.

unsafe_errorClassName  string | undefined

Additional classes to be applied to the error element.

unsafe_fieldClassName  string | undefined

Additional classes to be applied to the field node.

unsafe_footerClassName  string | undefined

Additional classes to be applied to the footer element.

unsafe_hasLabelBlock  boolean | undefined

Ember-only: this is used internally to detect whether a label named block is present, and to ignore empty label props if so.

unsafe_inputClassName  string | undefined

Additional classes to be applied to the input node.

unsafe_inputSize  number | undefined

Sets the size attribute on the input element. This controls the visible width of the input in characters.

unsafe_isLegacy  boolean | undefined

Whether the component should render with "legacy" styles.

unsafe_labelClassName  string | undefined

Additional classes to be applied to the label node.

unsafe_textareaWrapperClassName  string | undefined

Additional class to apply on the textarea element wrapper.

withCenterBaseline  boolean | undefined

Whether to apply the center-baseline variant.

On this page

Importing
Usage
Automatic validation
Custom error messages
All TextArea props supported
API