ChatGPT UI Form Control - Horizon AI Template

FormControl provides context such as isInvalid, isDisabled, and isRequired to form elements.

It follows the WAI specifications for forms.

Import#

import {
  FormControl,
  FormLabel,
  FormErrorMessage,
  FormHelperText,
} from "@chakra-ui/react"

Usage#

<FormControl id="email">
  <FormLabel>Email address</FormLabel>
  <Input type="email" borderRadius="16px" />
  <FormHelperText>We'll never share your email.</FormHelperText>
</FormControl>

<FormControl id="email">
  <FormLabel>Email address</FormLabel>
  <Input type="email" />
  <FormHelperText>We'll never share your email.</FormHelperText>
</FormControl>

Sample usage for a radio or checkbox group#

<FormControl as="fieldset">
  <FormLabel as="legend">Favorite Naruto Character</FormLabel>
  <RadioGroup defaultValue="Itachi">
    <HStack spacing="24px">
      <Radio value="Sasuke">Sasuke</Radio>
      <Radio value="Nagato">Nagato</Radio>
      <Radio value="Itachi">Itachi</Radio>
      <Radio value="Sage of the six Paths">Sage of the six Paths</Radio>
    </HStack>
  </RadioGroup>
  <FormHelperText>Select only if you're a fan.</FormHelperText>
</FormControl>

<FormControl as="fieldset">
  <FormLabel as="legend">Favorite Naruto Character</FormLabel>
  <RadioGroup defaultValue="Itachi">
    <HStack spacing="24px">
      <Radio value="Sasuke">Sasuke</Radio>
      <Radio value="Nagato">Nagato</Radio>
      <Radio value="Itachi">Itachi</Radio>
      <Radio value="Sage of the six Paths">Sage of the six Paths</Radio>
    </HStack>
  </RadioGroup>
  <FormHelperText>Select only if you're a fan.</FormHelperText>
</FormControl>

Making a field required#

By passing the isRequired props, the Input field has aria-required set to true, and the FormLabel will show a red asterisk.

<FormControl id="first-name" isRequired>
  <FormLabel>First name</FormLabel>
  <Input placeholder="First name" borderRadius="16px" />
</FormControl>

<FormControl id="first-name" isRequired>
  <FormLabel>First name</FormLabel>
  <Input placeholder="First name" borderRadius="16px" />
</FormControl>

Select Example#

<FormControl id="country">
  <FormLabel>Country</FormLabel>
  <Select placeholder="Select country">
    <option>Romania</option>
  </Select>
</FormControl>

<FormControl id="country">
  <FormLabel>Country</FormLabel>
  <Select placeholder="Select country">
    <option>Romania</option>
  </Select>
</FormControl>

Number Input Example#

<FormControl id="amount">
  <FormLabel>Amount</FormLabel>
  <NumberInput max={50} min={10}>
    <NumberInputField />
    <NumberInputStepper>
      <NumberIncrementStepper />
      <NumberDecrementStepper />
    </NumberInputStepper>
  </NumberInput>
</FormControl>

<FormControl id="amount">
  <FormLabel>Amount</FormLabel>
  <NumberInput max={50} min={10}>
    <NumberInputField />
    <NumberInputStepper>
      <NumberIncrementStepper />
      <NumberDecrementStepper />
    </NumberInputStepper>
  </NumberInput>
</FormControl>

Usage with Form Libraries#

Form Libraries like Formik make it soooo easy to manage form state and validation. I 💖 Formik

function FormikExample() {
  function validateName(value) {
    let error
    if (!value) {
      error = "Name is required"
    } else if (value.toLowerCase() !== "naruto") {
      error = "Jeez! You're not a fan 😱"
    }
    return error
  }
  return (
    <Formik
      initialValues={{ name: "Sasuke" }}
      onSubmit={(values, actions) => {
        setTimeout(() => {
          alert(JSON.stringify(values, null, 2))
          actions.setSubmitting(false)
        }, 1000)
      }}
    >
      {(props) => (
        <Form>
          <Field name="name" validate={validateName}>
            {({ field, form }) => (
              <FormControl isInvalid={form.errors.name && form.touched.name}>
                <FormLabel htmlFor="name">First name</FormLabel>
                <Input
                  {...field}
                  id="name"
                  placeholder="name"
                  borderRadius="16px"
                />
                <FormErrorMessage>{form.errors.name}</FormErrorMessage>
              </FormControl>
            )}
          </Field>
          <Button
            mt={4}
            colorScheme="brand"
            isLoading={props.isSubmitting}
            type="submit"
          >
            Submit
          </Button>
        </Form>
      )}
    </Formik>
  )
}

function FormikExample() {
  function validateName(value) {
    let error
    if (!value) {
      error = "Name is required"
    } else if (value.toLowerCase() !== "naruto") {
      error = "Jeez! You're not a fan 😱"
    }
    return error
  }
  return (
    <Formik
      initialValues={{ name: "Sasuke" }}
      onSubmit={(values, actions) => {
        setTimeout(() => {
          alert(JSON.stringify(values, null, 2))
          actions.setSubmitting(false)
        }, 1000)
      }}
    >
      {(props) => (
        <Form>
          <Field name="name" validate={validateName}>
            {({ field, form }) => (
              <FormControl isInvalid={form.errors.name && form.touched.name}>
                <FormLabel htmlFor="name">First name</FormLabel>
                <Input
                  {...field}
                  id="name"
                  placeholder="name"
                  borderRadius="16px"
                />
                <FormErrorMessage>{form.errors.name}</FormErrorMessage>
              </FormControl>
            )}
          </Field>
          <Button
            mt={4}
            colorScheme="brand"
            isLoading={props.isSubmitting}
            type="submit"
          >
            Submit
          </Button>
        </Form>
      )}
    </Formik>
  )
}

Improvements from v1#

We've improved the accessibility of the FormControl component. Here are the changes:
- id passed to the form control will be passed to the form input directly.
- FormLabel will have htmlFor that points to the id of the form input.
- FormErrorMessage adds aria-describedby and aria-invalid pointing to the form input.
- FormHelperText adds/extends aria-describedby pointing to the form input.
- isDisabled, isRequired, isReadOnly props passed to FormControl will cascade across all related components.
FormLabel is now aware of the disabled, focused and error state of the form input. This helps you style the label accordingly using the _disabled, _focus, and _invalid style props.
If you render FormErrorMessage and isInvalid is false or undefined, FormErrorMessage won't be visible. The only way to make it visible is by passing isInvalid and setting it to true.

Props#

`colorScheme`

Description

Color Schemes for FormControl are not implemented in the default theme. You can extend the themeto implement them.

Type

"brand" | "whiteAlpha" | "blackAlpha" | "gray" | "red" | "orange" | "yellow" | "green" | "teal" | "blue" | "cyan" | "purple" | "pink" | "linkedin" | "facebook" | ... 4 more ...

`isDisabled`

Description

If true, the form control will be disabled. This has 2 side effects: - The FormLabel will have `data-disabled` attribute - The form element (e.g, Input) will be disabled

Type

boolean

`isInvalid`

Description

If true, the form control will be invalid. This has 2 side effects: - The FormLabel and FormErrorIcon will have `data-invalid` set to true - The form element (e.g, Input) will have `aria-invalid` set to true

Type

boolean

`isReadOnly`

Description

If true, the form control will be readonly

Type

boolean

`isRequired`

Description

If true, the form control will be required. This has 2 side effects: - The FormLabel will show a required indicator - The form element (e.g, Input) will have `aria-required` set to true

Type

boolean

`label`

Description

The label text used to inform users as to what information is requested for a text field.

Type

string

`size`

Type

string

`variant`

Type

string