GravityCalendar - Add a sample event feed

add-event-source-to-calendar.php

<?php

/**
 * Example of how to add a sample event source.
 * 
 * @param array $sources The array of event sources. {
 *   @type string $url The URL of the event source.
 *   @type string $type The type of event source. Either `ics` or `json`.
 *   @type string $color The color of the event source.
 * }
 * @param int $form_id The ID of the Gravity Forms form being displayed.
 * @param int $feed_id The ID of the current Calendar feed.
 * 
 * @return array
 */
add_filter( 'gk/gravitycalendar/event_sources', function( $sources, $form_id = 0, $feed_id = 0 ) {
	
	//
	// UPDATE THE NUMBER BELOW!
	// This is the ID of the feed you want to modify.
	//
	$feed_id_to_modify = 4;
	
	// Only add the event source to the feed with ID 4.
	if ( (int) $feed_id !== $feed_id_to_modify ) {
		return $sources;
	}

	$sources[] = [
		'url'   => 'https://ics.calendarlabs.com/55/241df737/Jewish_Holidays.ics?',
		'type'  => 'ics',
		'color' => 'blue', // Use any CSS-compatible color name or hex value ("#ff0000" or "#f00" or "red").
	];

	return $sources;
}, 10, 3 );