Hooks

You can use hooks to modify the events and item array before they are rendered.

getEvents

This hook provides a way to modify which events are displayed in the fullcalendar. By default the calendar will display all child pages, but you can change that easily:

wire()->addHookAfter('RockCalendar::getEvents', function($event) {
  $event->return = wire()->pages->find('template=event');
});

getItemArray

This hook provides a way to modify the display of a single event. For example, you could change the color of the event based on another field of that event:

wire()->addHookAfter('RockCalendar::getItemArray', function ($event) {
  // get the event page
  $p = $event->arguments(0);

  // get the array sent to fullcalendar
  // Example: https://i.imgur.com/ST55aSf.png
  $arr = $event->return;

  // based on the title set another color
  // you can use any other field or parent page etc.
  if ($p->title === 'DEMO') {
    $arr['backgroundColor'] = '#FF0000';
    $arr['borderColor'] = '#FF0000';
  }

  // return the modified array
  // https://i.imgur.com/QjBetDC.png
  $event->return = $arr;
});