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https://github.com/prometheusresearch/react-forms

Forms library for React.
https://github.com/prometheusresearch/react-forms

Last synced: about 1 month ago
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Forms library for React.

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README

        

# React Forms

[![Travis build status](https://img.shields.io/travis/prometheusresearch/react-forms/develop.svg)](https://travis-ci.org/prometheusresearch/react-forms) [![Coverage](https://img.shields.io/coveralls/prometheusresearch/react-forms/develop.svg)](https://coveralls.io/github/prometheusresearch/react-forms)

React Forms library provides a set of tools for [React][] to handle form
rendering and validation.

**Table of Contents**

- [Installation](#installation)
- [Usage](#usage)
- [Validation](#validation)
- [API Reference](#api-reference)
- [``](#field-)
- [``](#fieldset-)
- [`createValue({schema, value, onChange})`](#createvalueschema-value-onchange)
- [`WithFormValue(Component)`](#withformvaluecomponent)
- [Howto Guides](#howto-guides)
- [Customizing form fields](#customizing-form-fields)
- [Pattern for reusable forms](#pattern-for-reusable-forms)
- [Examples](#examples)
- [Credits](#credits)

## Installation

To use version documented here you need to install `beta` tag from npm:

% npm install react-forms@beta

You would probably also need a module bundler such as [Browserify][] or
[Webpack][] as React Forms is distributed as a set of CommonJS modules.

## Usage

React Forms doesn't provide any `` component, instead it makes
implementing form components an easy task.

Note that examples are written using ES2015 syntax. You would probably use
[Babel][] with `es2015` and `react` presets enabled to compile code to ES5 which
is compatible with most of the current runtimes.

### Basic form component.

This is the example where form value is managed as a part of local component
state. Some might put form value in a Flux/Redux store instead.

```js
import React from 'react'
import {Fieldset, Field, createValue} from 'react-forms'

class Form extends React.Component {

constructor(props) {
super(props)
let formValue = createValue({
value: props.value,
onChange: this.onChange.bind(this)
})
this.state = {formValue}
}

onChange(formValue) {
this.setState({formValue})
}

render() {
return (




)
}
}
```

Then you can use `` component like any regular React component:

```js
import {render} from 'react-dom'

render(
,
document.getElementById('form')
)
```

### Validation

React Forms can validate form value using [JSON schema][]:

```js
let schema = {
type: 'object',
properties: {
firstName: {type: 'string'},
lastName: {type: 'string'}
}
}
```

Simply pass it to a `createValue(..)` function:

```js
let formValue = createValue({value, onChange, schema})
```

### API Reference

#### ``

#### ``

#### `createValue({schema, value, onChange})`

#### `WithFormValue(Component)`

### Howto Guides

#### Customizing form fields

All components in React Forms conform to [React Stylesheet][] API. That means
that for injecting customization one needs `react-stylesheet` package to be
installed:

% npm install react-stylesheet

Customizing label rendering:

```js
import React from 'react'
import {style} from 'react-stylesheet'
import {Field as BaseField, Label as BaseLabel} from 'react-forms'

function Label({label, schema}) {
return
}

let Field = style(BaseField, {
Label: Label
})
```

Customizing error list rendering:

```js
import React from 'react'
import {style} from 'react-stylesheet'
import {Field as BaseField, ErrorList as BaseErrorList} from 'react-forms'

function ErrorList({formValue}) {
return
}

let Field = style(BaseField, {
ErrorList: ErrorList
})
```

Form field with custom input component:

```js
import React from 'react'
import {Field} from 'react-forms'
import Datepicker from 'datepicker'

function DateField(props) {
return
}
```

Implementing form field component from scratch:

```js
import React from 'react'
import {WithFormValue} from 'react-forms'

class Field extends React.Component {

render() {
let {formValue} = this.props
return (


{formValue.schema.label}


)
}

onChange = (e) => this.props.formValue.update(e.target.value)
}

Field = WithFormValue(Field);
```

#### Pattern for reusable forms

```js
import React from 'react'
import {Fieldset} from 'react-forms'

class IndividualFieldset extends React.Component {

static schema = {
type: 'object',
properties: {
firstName: {type: 'string'},
lastName: {type: 'string'}
}
}

static value = {
firstName: 'John',
lastName: 'Doe'
}

render() {
let {label, ...props} = this.props
return (

{label}



)
}
}
```

Later you can compose schema and initial form value using `IndividualFieldset.schema`
and `IndividualFieldset.value` static properties and use `` component
itself for rendering.

```js
let schema = {
type: 'object',
properties: {
mother: IndividualFieldset.schema,
father: IndividualFieldset.schema
}
}

let value = {
mother: IndividualFieldset.value,
father: IndividualFieldset.value
}

class FamilyForm extends React.Component {

constructor(props) {
super(props)
this.state = {formValue: createValue({schema, value, this.onChange})}
}

onChange = (nextFormValue) => {
this.setState({formValue: nextFormValue})
}

render() {
return (




)
}
}
```

## Examples

Examples are located at `examples` folder. To run.

```js
cd examples
npm install
npm start
```
open http://localhost:4000 in browser

## Credits

React Forms is free software created by [Prometheus Research, LLC][] and is
released under the MIT license.

[React]: http://facebook.github.io/react/
[React Stylesheet]: https://github.com/prometheusresearch/react-stylesheet
[Prometheus Research, LLC]: http://prometheusresearch.com
[JSON schema]: http://json-schema.org/documentation.html
[Browserify]: http://browserify.org/
[Webpack]: https://webpack.github.io/docs/
[Babel]: http://babeljs.io/