Modern Events Calendar – get info about the available tickets

Happy ninja with a calendar in the background

Modern Events Calendar – get info about the available tickets


retrieve data about tickets using a custom plugin
analyze the plugin’s source code and query the needed data

The Modern Events Calendar (MEC) features a free version (called Lite). It’s an event management plugin for WordPress which makes selling tickets easy.

Are you in need of custom integration with a MEC plugin? Or do you need to fetch custom details about events or tickets, but the default shortcodes are not providing it out of the box? After analyzing how the plugin works, we display info about tickets as custom shortcode.

In this tutorial, we’re focusing on MEC Pro. It’s a premium version that includes a booking system and an option to generate tickets. The premium version is available for $75 with Lifetime Auto Updates for 1 site. This means it’s a one-time payment (no need to extend a subscription every year).

Event calendar window showing days

Booking system

We need to follow a few steps to configure a booking system in MEC Pro:

  1. Import Dummy Events
  2. Wp-admin / M.E. Calendar / Settings / Booking – ‘Enable booking module’
  3. Edit a particular event, scroll to the ‘Booking’ MetaBox and define Tickets. Make sure to fill in the ‘Available Ticket’ field.
  4. Go to a single event page, for example: /events/monthly-on-27th/ – the book event form should be visible.

Event calendar app window with tickets tab opened

Custom WP plugin

For presentation purposes, we’re going to create a custom WordPress plugin that will register shortcode. We will create a listing with all events and calculate how many tickets are still available, as well as the number of tickets already sold. The plugin includes shortcode [ct_query_mec] that will render the results.

The most important method is get_tickets_availability(). Instead of writing it from scratch, we are reusing the original plugin method from the MEC_book class (file location: wp-content/plugins/modern-events-calendar/app/libraries/book.php ).

$book_class = new MEC_book();
$book = $book_class->getBook();

The MEC_book PHP class is available globally to use, so we can init it in our shortcode. Occurence_time, which is the second parameter for the get_tickets_availability() function is somewhat mysterious. Firstly, it’s difficult to say what proper value we should provide. It turns out it’s the timestamp of the event’s starting moment. This value is fetched using the get_post_meta WP method.

$start_date = get_post_meta($event->ID, 'mec_start_date', true);
$start_time = get_post_meta($event->ID, 'mec_start_day_seconds', true);
// $occurrence_time = 1645948800;
$occurrence_time = strtotime($start_date) + $start_time;

To better understand how timestamp is calculated, let’s inspect the wp_postmeta table. mec_start_date and mec_start_day_seconds are the values we’re using:


Table showing ticket availability
Here is the main file needed for plugin activation:

// wp-content/plugins/ct-query-mec/ct-query-mec.php
 * Plugin Name:       CT Query MEC
 * Description:       Fetch custom details from MEC database structure
 * Version:           1.0.0
// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
 * Currently plugin version.
 * Start at version 1.0.0 and use SemVer -
 * Rename this for your plugin and update it as you release new versions.
define( 'YOUR_PLUGIN_SLUG_VERSION', '1.0.0' );
 * The core plugin class that is used to define internationalization,
 * admin-specific hooks, and public-facing site hooks.
require plugin_dir_path( __FILE__ ) . 'includes/shortcodes.php';

And a shortcode function for displaying MEC Ticket info:

// wp-content/plugins/ct-query-mec/includes/shortcodes.php
function ct_get_available_tickets_func() {
    if(! class_exists('MEC_book')){
       include( WP_PLUGIN_DIR . '/modern-events-calendar/app/libraries/book.php');
    $output = '';
    $book_class = new MEC_book();
    $book = $book_class->getBook();
    $args = array(
        'post_type' => 'mec-events',
        'posts_per_page' => -1,
        'post_status' => array('publish'),
    $events = get_posts($args);
    $listing = '<h1>Ticket availability</h1>';
    foreacH($events as $event){
        $start_date = get_post_meta($event->ID, 'mec_start_date', true);
        $start_time = get_post_meta($event->ID, 'mec_start_day_seconds', true);
        // $occurrence_time = 1645948800;
        $occurrence_time = strtotime($start_date) + $start_time;
        $availability = $book->get_tickets_availability($event->ID, $occurrence_time);
        $availability_text = '';
        if(isset($availability[1])) {
            $availability_text = $availability[1];
            $listing .= '<div class="events-listing">';
            $listing .= '<h2><a href="'. get_permalink($event->ID) .'">'. $event->post_title .'</a></h2>';
            $listing .= '<p>Tickets available: ' . $availability_text . '</p>';
            $listing .= '<p>Tickets sold: ' . $book->get_all_sold_tickets($event->ID) . '</p>';
            $listing .= '</div>';
            $listing .= '<br><br><br>';
    $output .= $listing;
    $output .= '[MEC id="19"]';
    // $event_id = 7;
    // $output .= '[mec-booking event-id="' . $event_id .'"]';
    return do_shortcode($output);
// register shortcode
add_shortcode('ct_query_mec', 'ct_get_available_tickets_func');

That’s it. The last step will be to activate the plugin and add [ct_query_mec] to page content. The listing will be rendered.

MEC Free vs Pro

Modern Events Calendar Pro includes many interesting features, such as a booking system (ticket generation), QR codes, reminder notifications and additional shortcodes. The plugin offers good price-quality ratio. In comparison to its competition, it is more feature-rich and has a better pricing point.

The MEC plugin also offers a rich list of paid add-ons. The add-ons integrate with existing WordPress plugins, like WooCommerce or Elementor. They may also add extra functionality to Events. It’s worth to mention that add-ons often don’t need the Pro version, and can work with the free one. More info:

The basic functionality is often enough to start your Event listing and gather event submissions from the plugin form. Let’s inspect the features table to have a better overview of the features of the free/Lite version vs. Premium. You can check it out and see if paying extra is worth it.

Modern Evens Calendar – features table comparison


FeaturesMEC Lite (Free)MEC (Pro)
Single day events
Multiple day events
All day events
Full Calendar view
Monthly calendar view
Daily view
Weekly view
Countdown view
Grid & cover view
Slider & carousel view
List View
Event locations system
Event venue & organizer system
Multiple organizers
Front-end Event Submission
Never end events
Event widgets & sidebar
Custom sidebar
Recurring/Repeating events
Shortcodes generator
Direct/Modal link for single event
Show/Hide option for search bar
Filtering options
Google calendar integration
Reporting dashboard
Local time
Manage Notifictions
RSS feed
Schedule for single event
Download .ics file
Social share icons
Custom Color
Search Bar Shortcode
Schema Ready
QRcode module
Reminders notification
Organizer Payment
Customizable Notifications Emails
Complete Repeating
Ticket price per date
Customizable Timetable
Import .ics file
Auto Update
Map view + Directions
Agenda view
Masonry view
Timetable view
Available spot
Ticketing system
Booking system
Booking form builder
Booking Calendar
Weather module
Premium Support
Total Price$0.00$75


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