Extend ‘The Events Calendar’ search to include custom fields [closed]

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I am using the following code to modify the default WordPress search and The Events Calendar search to include custom fields.

The custom fields are added by the Advanced Custom Field
(ACF) plugin (https://advancedcustomfields.com/). I am particularly interested in a field which is a ACF repeater field. (Although, it would be helpful if all post_meta associated with the event post can be searched.)

/**
 * Extend WordPress search to include custom fields
 * http://adambalee.com/search-wordpress-by-custom-fields-without-a-plugin/
 *
 * https://theeventscalendar.com/support/forums/topic/how-to-include-custom-fields-in-search/
 */

/**
 * Join posts and postmeta tables
 * http://codex.wordpress.org/Plugin_API/Filter_Reference/posts_join
 */
function cf_search_join( $join ) {
    global $wpdb;

if ( is_search() || !empty( $_REQUEST['tribe-bar-search'] ) ) {
        $join .=' LEFT JOIN '.$wpdb->postmeta. ' ON '. $wpdb->posts . '.ID = ' . $wpdb->postmeta . '.post_id ';
    }

    return $join;
}
add_filter('posts_join', 'cf_search_join' );

/**
 * Modify the search query with posts_where
 * http://codex.wordpress.org/Plugin_API/Filter_Reference/posts_where
 */
function cf_search_where( $where ) {
    global $wpdb;

if ( is_search() || !empty( $_REQUEST['tribe-bar-search'] ) ) {
        $where = preg_replace(
            "/\(\s*".$wpdb->posts.".post_title\s+LIKE\s*(\'[^\']+\')\s*\)/",
            "(".$wpdb->posts.".post_title LIKE $1) OR (".$wpdb->postmeta.".meta_value LIKE $1)", $where );
    }

    return $where;
}
add_filter( 'posts_where', 'cf_search_where' );

/**
 * Prevent duplicates
 * http://codex.wordpress.org/Plugin_API/Filter_Reference/posts_distinct
 */
function cf_search_distinct( $where ) {
    global $wpdb;

if ( is_search() || !empty( $_REQUEST['tribe-bar-search'] ) ) {
        return "DISTINCT";
    }

    return $where;
}
add_filter( 'posts_distinct', 'cf_search_distinct' );

The code works fine for the default WordPress search but not for The Events Calendar search.

I have tried the code with the default Twenty Seventeen theme and disabling plugins other than The Events Calendar ones, to rule out any theme/plugin conflicts, but that didn’t work either.

Any pointers on where I might be going wrong will be extremely helpful.

Thanks.

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