andy9775/react-declare-form

react-declare-form

A declarative approach towards building forms in react

NOTE: This project uses react hooks which are available in alpha.

View the RFC here

About

The purpose of react-declare-form is encapsulate form state management into a root component which wraps children (input, button, select) to allow a declarative way of building up forms.

react-declare-form supports handling of required components by defining a callback function which returns if a form component has been filled out or not. It also supports passing up errors. Both of these objects are available throughout all form components which allows error messages to be displayed around buttons and other form components for example.

react-declare-form only exports two elements. A root form component Form which should be provided with wrapped components. Components should be wrapped using connectToForm function which provides props to the form components to be used in fetching and settings state, errors and required handler logic. Anyone familiar with the Redux style connect function will be comfortable with this pattern. This means that buttons, inputs, selects and other form components need to be wrapped and built and are not provided.

API

Form Components

NOTE: Each form component should have a stateKey and initialStateKey prop provided. Both of these should be unique as they identify that particular components state throughout the form.

TODO

Example

let Input = props => (
  <input
    value={props.componentState || ''}
    onChange={e => {
      e.preventDefault();
      props.setFormState(
        event.target.value, // state
        event.target.value // meta
      );
    }}
    type="text"
  />
);
Input = connectToForm(Input);

let Button = props => (
  <button onClick={() => props.onButtonClick(props.id)}>
    {this.props.children}
  </button>
);
Button = connectToForm(Button, { setInitialStateCallback: false });

const initialState = { email: 'andy@react.com' };

const myForm = () => (
  <Form
    onButtonClick={formEvent => {
      // Submit form
      api.post(url, formEvent.state.displayState);
    }}
    initialState={initialState}
  >
    <Input stateKey="email" initialStateKey="email" />
    <Button id="submit">Submit</Button>
  </Form>
);