em-wpml-event-recurring.php

<?php

add_filter( 'em_event_save_events', 'em_wpml_connect_recurring_translations', 10, 4 );

function em_wpml_connect_recurring_translations( $result, $event, $event_ids, $post_ids ) {
    global $wpdb;

    // Only do this for successfully saved recurring events.
    if ( $result && $event->recurrence ) {

        // Get the original post for this recurring event.
        $trid = apply_filters( 'wpml_element_trid', false, $event->post_id, 'post_event-recurring' );
        $translations = apply_filters( 'wpml_get_element_translations', false, $trid, 'post_event-recurring' );
        $original = wp_list_filter( $translations, array( 'original' => 1 ) );
        $original = reset( $original );

        // We dont need to do anything to originals.
        if ( empty( $original ) || $original->element_id == $event->post_id ) {
            return;
        }

        // We are saving a translation, lets connect them to their originals.
        $original->event_id = get_post_meta( $original->element_id, '_event_id', true );
        $originals = $wpdb->get_col( $wpdb->prepare(
            "SELECT post_id FROM {$wpdb->prefix}em_events WHERE recurrence_id = %d",
            $original->event_id
        ) );
        $language = apply_filters( 'wpml_element_language_code', null, array(
            'element_id' => $event->post_id,
            'element_type' => 'post_event-recurring'
        ) );
        foreach ( $post_ids as $i => $post_id ) {
            $trid = apply_filters( 'wpml_element_trid', false, $originals[ $i ], 'post_event' );
            $args = array(
                'element_id'    => $post_id,
                'element_type'  => 'post_event',
                'trid'   => $trid,
                'language_code'   => $language,
                'source_language_code' => $original->language_code
            );
            do_action( 'wpml_set_element_language_details', $args );
        }
    }

    return $result;
}