rc-form

React High Order Form Component.

Development

npm install
npm start

Example

http://localhost:8000/examples/

online example: http://react-component.github.io/form/examples/

Feature

• support reactjs and even react-native

Install

Usage

import { createForm } from 'rc-form';

class Form extends React.Component {
  submit = () => {
    this.props.form.validateFields((error, value) => {
      console.log(error, value);
    });
  }

  render() {
    let errors;
    const { getFieldProps, getFieldError } = this.props.form;
    return (<div>
      <input {...getFieldProps('normal')}/>
      <input {...getFieldProps('required', {
        onChange(){}, // have to write original onChange here if you need
        rules: [{required: true}],
      })}/>
      {(errors = getFieldError('required')) ? errors.join(',') : null}
      <button onClick={this.submit}>submit</button>
    </div>)
  }
}

export createForm()(Form);

or a quicker version:

import { createForm } from 'rc-form';

class Form extends React.Component {
  componentWillMount() {
    this.requiredDecorator = this.props.form.getFieldDecorator({
        name: 'required',
        rules: [{required: true}],
    });
  },

  submit = () => {
    this.props.form.validateFields((error, value) => {
      console.log(error, value);
    });
  }

  render() {
    let errors;
    const { getFieldError } = this.props.form;
    return (<div>
      {this.requiredDecorator(
      <input onChange={
      // can still write your own onChange }
      />)}
      {(errors = getFieldError('required')) ? errors.join(',') : null}
      <button onClick={this.submit}>submit</button>
    </div>)
  }
}

export createForm()(Form);

createForm(formOption): Function

formOption.validateMessages: Object

preset messages of async-validator

formOption.mapProps: Function(props): Object

Get new props transfered to WrappedComponent. Defaults to props=>props.

formOption.onFieldsChange(props, changedFields)

Called when field changed, you can dispatch fields to redux store.

formOption.onValuesChange(props, changedValues)

Called when value changed.

formOption.mapPropsToFields(props)

convert value from props to fields. used for read fields from redux store.

formOption.withRef: boolean

Maintain an ref for wrapped component instance, use refs.wrappedComponent to access.

createForm() will return another function:

function(WrappedComponent: React.Component): React.Component

Will pass a object as prop form with the following members to WrappedComponent:

getFieldProps(name, option): Object

Will create props which can be set on a input/InputComponent which support value and onChange interface.

After set, this will create a binding with this input.

<form>
  <input {...getFieldProps('name', { ...options })} />
</form>

name: String

This input's unique name.

option.exclusive: boolean

whether set value exclusively. used with radio.

option.valuePropName: String

Prop name of component's value field, eg: checkbox should be set to checked ...

option.getValueFromEvent

Specify how to get value from event. Defaults to

function (e) {
  if (!e || !e.target) {
    return e;
  }
  const { target } = e;
  return target.type === 'checkbox' ? target.checked : target.value;
}

option.getValueProps

get the component props according to field value. Defaults to

function (value) {
  return { value };
}

option.initialValue

Initial value of current component.

option.normalize(value, prevValue, allValues)

Return normalized value

option.trigger: String

Defaults to onChange. Event which is listened to collect form data.

option.validate: Object[]

option.validate[n].trigger: String|String[]

Event which is listened to validate. Defaults to onChange, set to falsy to only validate when call props.validateFields.

option.validate[n].rules: Object[]

Validator rules. see: async-validator

option.validateTrigger && option.rules

{
  validateTrigger: 'onBlur',
  rules: [{required: true}],
}
// is the shorthand of
{
  validate: [{
    trigger: 'onBlur',
    rules: [required: true],
  }],
}

option.validateFirst: Boolean

Defaults to false. whether stop validate on first rule of error for this field.

option.fieldNameProp

Where to store the name argument of getFieldProps.

option.fieldMetaProp

Where to store the meta data of getFieldProps.

getFieldDecorator(name:String, option: Object): (React.Node): React.Node

Similar to getFieldProps, but add some helper warnings and you can write onXX directly inside React.Node props:

<form>
  {getFieldDecorator('name', otherOptions)(<input />)}
</form>

getFieldsValue([fieldNames: String[]])

Get fields value by fieldNames.

getFieldValue(fieldName: String)

Get field value by fieldName.

getFieldInstance(fieldName: String)

Get field react public instance by fieldName.

setFieldsValue(obj: Object)

Set fields value by kv object.

setFieldsInitialValue(obj: Object)

Set fields initialValue by kv object. use for reset and initial display/value.

setFields(obj: Object)

Set fields by kv object. each field can contain errors and value member.

validateFields([fieldNames: String[]], [options: Object], callback: Function(errors, values))

Validate and get fields value by fieldNames.

options is the same as validate method of async-validator. And add force and scroll. scroll is the same as dom-scroll-into-view's function parameter config.

options.force: Boolean

Defaults to false. Whether to validate fields which have been validated(caused by validateTrigger).

getFieldsError(names): Object{ [name]: String[] }

Get inputs' validate errors.

getFieldError(name): String[]

Get input's validate errors.

isFieldValidating(name: String): Bool

Whether this input is validating.

isFieldsValidating(names: String[]): Bool

Whether one of the inputs is validating.

isFieldTouched(name: String): Bool

Whether this input's value had been change.

isFieldsTouched(names: String[]): Bool

Whether one of the inputs' values had been change.

isSubmitting(): Bool

Whether the form is submitting.

submit(callback: Function)

Cause isSubmitting to return true, after callback called, isSubmitting return false.

resetFields([names: String[]])

Reset specified inputs. Defaults to all.

rc-form/lib/createDOMForm(formOption): Function

createForm enhancement, support props.form.validateFieldsAndScroll

props.form.validateFieldsAndScroll([fieldNames: String[]], [options: Object], callback: Function(errors, values))

props.form.validateFields enhancement, support scroll to the first invalid form field

options.container: HTMLElement

Defaults to first scrollable container of form field(until document).

Notes

• Do not use stateless function component inside Form component: https://github.com/facebook/react/pull/6534

• you can not set same prop name as the value of validateTrigger/trigger for getFieldProps

<input {...getFieldProps('change',{
  onChange: this.iWantToKnow // you must set onChange here or use getFieldDecorator to write inside <input>
})}>

• you can not use ref prop for getFieldProps

<input {...getFieldProps('ref')} />

this.props.form.getFieldInstance('ref') // use this to get ref

or

<input {...getFieldProps('ref',{
  ref: this.saveRef // use function here or use getFieldDecorator to write inside <input> (only allow function)
})} />

Test Case

npm test
npm run chrome-test

Coverage

npm run coverage

open coverage/ dir

License

rc-form is released under the MIT license.