react-component-form
Manage React Forms with ease.
## 📜 About
**react-component-form** is a lightweight form component for [React.js](https://reactjs.org/), it allows you to get the inputs values without state thanks to `onChange` or `onSubmit` props.
There is also a [React Hooks](https://reactjs.org/docs/hooks-intro.html) to be used in combination with the `` component to validate the data with [Ajv JSON schema validator](https://ajv.js.org/), see [advanced usage](#%EF%B8%8F-advanced-usage).
Demo: [https://react-component-form.vercel.app/](https://react-component-form.vercel.app/).
## 💾 Install
```sh
npm install --save react-component-form
```
## ⚙️ Usage
_Note : The examples use TypeScript, but obviously you can use JavaScript. Be aware that `HandleForm` is the type definition for the `onChange` and `onSubmit` props._
```tsx
import React from 'react'
import { Form } from 'react-component-form'
import type { HandleForm } from 'react-component-form'
export const Example = () => {
const handleSubmit: HandleForm = (formData, formElement) => {
console.log(formData) // { inputName: 'value of the input' }
formElement.reset()
}
return (
)
}
```
Basically you have access to the same props of the HTML `form` tag in React, but the `onSubmit` and the `onChange` props are differents.
Instead to get the `event` param you get `formData` and `formElement` parameters:
- `formData`: It's an object where the keys are the name of your inputs and the current value. Behind the scene, it uses the [FormData](https://developer.mozilla.org/docs/Web/API/FormData) constructor.
- `formElement`: It's the actual HTML form element in the DOM so for example you can access the `.reset()` method on a [HTMLFormElement](https://developer.mozilla.org/docs/Web/API/HTMLFormElement).
## ⚙️ Advanced Usage
This example shows how to use the `` component with `useForm` hook to validate the data with [Ajv JSON schema validator](https://ajv.js.org/).
You can see a more detailled example in the [./example](./example) folder.
```tsx
import React from 'react'
import { Form, useForm } from 'react-component-form'
import type { HandleUseFormCallback } from 'react-component-form'
const schema = {
inputName: {
type: 'string',
minLength: 3,
maxLength: 20
}
}
export const Example = () => {
const { handleUseForm, errors, message } = useForm(schema)
const onSubmit: HandleUseFormCallback = (
formData,
formElement
) => {
console.log(formData) // { inputName: 'value of the input validated' }
formElement.reset()
// The return can be either `null` or an object with a global message of type `'error' | 'success'`.
return {
type: 'success',
value: 'Success: Form submitted'
}
}
return (
)
}
```
## API
### `useForm(schema)`
#### Parameters
- `schema`: The JSON schema to validate the data (recommended to use [@sinclair/typebox](https://www.npmjs.com/package/@sinclair/typebox)).
#### Returns
- `handleUseForm(onSubmit)`: Function to be used with the `onSubmit` prop of the `` component.
- `fetchState = 'idle'`: The current state of the form (`'error' | 'success' | 'idle' | 'loading'`).
- `setFetchState`: Function to update the `fetchState`.
- `message`: Global message of the form (not specific to a property).
- `setMessage`: Function to update the `message`.
- `errors`: Object of errors:
- Key: correspond to a property in the JSON Schema.
- Value: array of [ajv `ErrorObject`](https://ajv.js.org/api.html#error-objects).
The array will always have at least one element (never empty) in case of errors.
If the value is `undefined`, it means there are no errors for this property.
## 💡 Contributing
Anyone can help to improve the project, submit a Feature Request, a bug report or
even correct a simple spelling mistake.
The steps to contribute can be found in [CONTRIBUTING.md](./CONTRIBUTING.md).
## 📄 License
[MIT](./LICENSE)