Anduin-

<?php
/**
 * Created by PhpStorm.
 * User: tim
 * Date: 2/5/18
 * Time: 10:56 PM
 */

add_filter('ep_post_sync_args', 'add_content_to_elastic', 10, 2);
function add_content_to_elastic($post_args, $post_id)

Anduin-

<?php

function get_word_form( $count, $word_forms = [ 'предмет', 'предмета', 'предметов' ] ) {

	$count = preg_replace( '/[^\d]/', '', $count );
	$n100  = $count % 100;
	$n10   = $count % 10;
	if ( ( $n100 > 10 ) && ( $n100 < 20 ) ) {
		return $word_forms[2];
	} elseif ( $n10 == 1 ) {