How to make a custom redux-form component control multiple fields?

Question

I want to have a Map with a draggable marker that determines both x and y fields.

<Fields names={['x', 'y']} component={Map} />

When the marker is dropped to a new location on the map, how do I tell redux-form what the new x and y values are?

http://redux-form.com/6.5.0/docs/faq/CustomComponent.md/

Answer 1

const renderMap = props => (
  <DragDrop
    image={props.image}
    currentValue={{
      x: props.x.input.value,
      y: props.y.input.value,
    }}
    thingsChanged={coords => {
      props.x.input.onChange(coords.x);
      props.y.input.onChange(coords.y);
    }} />
)

<Fields
  names={['x', 'y']}
  component={renderMap}
  image={this.state.image} />