[Canton]

I solved this. The REST documentation only mentions tribe_rest_single_event_data, which is only good for modifying the output from getting the output from a single event.

I dug through the source code and discovered the tribe_rest_event_data filter, which is what modifies the output of the more general /wp-json/tribe/events/v1/events endpoint.

May I recommend that the documentation be updated to include a list of all the available filters? (Or at least more than just the single filter?)

For anyone who’s looking for a way to add the custom fields to the multi-event REST output, here’s sample code for your functions.php file. Note the commented out line that lets you discover what mysterious _ecp_custom_x meta name was assigned for each of your custom fields.

add_filter( ‘tribe_rest_event_data’, ‘api_add_custom_values_all’ );

function api_add_custom_values_all( array $event_data ) {
// $meta = get_post_meta($event_id); print_r($meta); exit; // use this to figure out custom field names e.g. _ecp_custom_2
$event_id = $event_data[‘id’];
$max_participants = get_post_meta( $event_id, ‘_ecp_custom_3’, true );
$event_data[‘max_participants’] = $max_participants;
$attendance = get_post_meta( $event_id, ‘_ecp_custom_2’, true );
$event_data[‘attendance’] = $attendance;
return $event_data;
}

[Canton]

Worked great, thanks: https://www.dropbox.com/s/uj2l06uf0g5kclx/Screenshot%202015-10-16%2014.39.04.png?dl=0

Note: Your trouble ticket emailing system mangled up your search/replace code some. I figured it out anyway, but I figure you might want to know that your emailing system is unnecessarily HTML-entitying in some cases:

https://www.dropbox.com/s/6s2cjy8yhw1rgng/Screenshot%202015-10-16%2014.39.37.png?dl=0

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