@felte/reporter-preact

A Felte reporter that uses a custom Preact component to report errors.

Installation

# npm
npm i -S @felte/reporter-preact

# yarn
yarn add @felte/reporter-preact

Usage

Its usage is exactly the same as @felte/reporter-react except for the import statements.

The package exports a reporter function and a ValidationMessage component. Pass the reporter function to the extend option of useForm and add the ValidationMessage component wherever you want your validation messages to be displayed.

The ValidationMessage component needs a for prop set with the name of the input it corresponds to, the child of ValidationMessage is a function that takes the error messages as an argument. This can be either a string, an array of strings, or undefined.

import { reporter, ValidationMessage } from '@felte/reporter-preact';
import { useForm } from '@felte/preact';

export function Form() {
  const { form } = useForm({
      // ...
      extend: reporter,
      // ...
    },
  })

  return (
    <form ref={form}>
      <label htmlFor="email">Email:</label>
      <input id="email" type="text" name="email" />
      <ValidationMessage for="email">
        <!-- We assume a there's only going to be one message -->
        {(message) => <span>{message?.[0]}</span>}
      </ValidationMessage>
      <label htmlFor="password">Password:</label>
      <input id="password" type="password" name="password" />
      <ValidationMessage for="password">
        {(message) => <span>{message?.[0]}</span>}
      </ValidationMessage>
      <input type="submit" value="Sign in" />
    </form>
  );
}

Warnings

This reporter can help you display your warning messages as well. If you want your ValidationMessage component to display the warnings for a field you'll need to set the level prop to the value warning. By default this prop has a value of error.

<ValidationMessage level="warning" for="email">
  {(message) => <span>{message?.[0]}</span>}
</ValidationMessage>