facetwp index geo my wordpress latitude/longitute

facetwp_geomywp_indexing.php

<?php

/**
 * select post type in the map or proximity facet as the datasource, this is just a placeholder
 * looks up lat/lng from GEO my WordPress plugin tables
 * do a full re-index in facetwp's settings to update the indexed values after adding code
 */
add_filter( 'facetwp_index_row', function( $params, $class ) {
	if ( 'my_map_facet' == $params['facet_name'] ) { // be sure to change this to the name of your facet
		global $wpdb;

		$sql = $wpdb->prepare( "SELECT latitude, longitude FROM {$wpdb->prefix}gmw_locations WHERE object_id = %d AND object_type = 'post' LIMIT 1", $params['post_id'] );
		$result = $wpdb->get_row( $sql );

		if ( null !== $result ) {
			$params['facet_value'] = $result->latitude;
			$params['facet_display_value'] = $result->longitude;
		}
		else {
			return false;
		}
	}
	return $params;
}, 10, 2 );