facetwp index lat/lng

custom-hooks.php

<?php

function starkatcher_index_latlng( $params, $class ) {
  if ( 'location' == $params['facet_name'] ) {
    $latlong = explode(',', get_post_meta( $params['post_id'], 'sk-location', true ));
    $lat = $latlong[0];
    $long = $latlong[1];

    // foreach ( (array) $params['facet_value'] as $post ) {
    $params['facet_value'] = $lat;
    $params['facet_display_value'] = $long;
  // }
  }
  return $params;
}
add_filter( 'facetwp_index_row', 'starkatcher_index_latlng', 10, 2 );