cpt-events-ical.php

cpt-events-ical.php

<?php
// see: http://www.noeltock.com/web-design/wordpress/how-to-ical-with-custom-post-types/ for more info
//add to functions.php: load_template( dirname( __FILE__ ) . '/lib/cpt-events-ical.php' );

function tf_events_ical() {
 
// - start collecting output -
ob_start();
 
// - file header -
header('Content-type: text/calendar');
header('Content-Disposition: attachment; filename="ical.ics"');
 
// - content header -
?>
BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>//NONSGML Events //EN
X-WR-CALNAME:<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?> – Events
X-ORIGINAL-URL:<?php echo esc_url( home_url( '/' ) ); ?>/?feed=tf-events-ical
X-WR-CALDESC:<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?> – Upcoming Events
CALSCALE:GREGORIAN

<?php 
// - grab date barrier -
$today6am = strtotime('today 6:00') + ( get_option( 'gmt_offset' ) * 3600 );
//removed $limit in $querystr and set to 500 for the time being (originally: $limit = get_option('pubforce_rss_limit');)

// - query -
global $wpdb;
$querystr = "
    SELECT *
    FROM $wpdb->posts wposts, $wpdb->postmeta metastart, $wpdb->postmeta metaend
    WHERE (wposts.ID = metastart.post_id AND wposts.ID = metaend.post_id)
    AND (metaend.meta_key = 'event_end' )
    AND metastart.meta_key = 'event_end'
    AND wposts.post_type = 'base_events'
    AND wposts.post_status = 'publish'
    ORDER BY metastart.meta_value ASC LIMIT 500
 ";

$events = $wpdb->get_results($querystr, OBJECT);

// - loop -
if ($events):
global $post;
foreach ($events as $post):
setup_postdata($post);

// - custom variables -
$custom = get_post_custom(get_the_ID());
$sd = $custom["event_start"][0];
$ed = $custom["event_end"][0];

// - grab gmt for start -
$gmts = date('Y-m-d H:i:s', $sd);
$gmts = get_gmt_from_date($gmts); // this function requires Y-m-d H:i:s
$gmts = strtotime($gmts);

// - grab gmt for end -
$gmte = date('Y-m-d H:i:s', $ed);
$gmte = get_gmt_from_date($gmte); // this function requires Y-m-d H:i:s
$gmte = strtotime($gmte);

// - Set to UTC ICAL FORMAT -
$stime = date('Ymd\THis\Z', $gmts);
$etime = date('Ymd\THis\Z', $gmte);
// - item output -
?>

BEGIN:VEVENT
DTSTART:<?php echo $stime . "\n";?>
DTEND:<?php echo $etime . "\n";?>
SUMMARY:<?php echo the_title() . "\n"; ?>
DESCRIPTION:<?php echo substr(get_the_excerpt(), 0,50) . "\n"; ?>
END:VEVENT
<?php
endforeach;
else :
endif;
?>
END:VCALENDAR

<?php 

// - full output -
$tfeventsical = ob_get_contents();
ob_end_clean();
echo $tfeventsical;
}
 
function add_tf_events_ical_feed () {
    // - add it to WP RSS feeds -
    add_feed('tf-events-ical', 'tf_events_ical');
}
 
add_action('init','add_tf_events_ical_feed');

?>