app/components/file-select.js
import OneWayFileComponent from 'ember-one-way-controls/components/one-way-file';
import { invokeAction } from 'ember-invoke-action';
export default OneWayFileComponent.extend({
// form is hidden by default
classNameBindings: ['isHidden:hidden-xs-up'],
isHidden: true,
change(event) {
invokeAction(this, 'update', event.target);
}
});