<?php
/** index a serialized checkbox
** run reindex after adding code to your site
**/
add_filter( 'facetwp_index_row', function( $params, $class ) {
if ( 'my_facet' == $params['facet_name'] ) { // change my_facet to name of your facet
$values = maybe_unserialize( $params['facet_value'] );
if ( is_array( $values ) && ! empty( $values ) ) {
foreach ( $values as $value ) {
$new_params = $params;
$new_params['facet_value'] = $value;
$new_params['facet_display_value'] = $value;
$class->insert( $new_params ); // insert new value to the database
}
return false; // don't index original
}
}
return $params;
}, 10, 2 );