onChangehandler responsible for updating the data source of a field's value.
handlers.handleFieldChange, but instead it invokes a custom
onChangehandler. Since the handler updates the data source, the field component will receive the next value and catch it in
componentWillReceiveProps. Then it emits a forced
fieldChangeevent, thus distinguishing that current field change should propagate to the fields.
fieldsinside the form component.
valueprop and the
onChangehandler to a field.