Custom field not searched

@vinod-dalvi Thanks for the quick response.

Perhaps that’s why Ivory Search works well with Advanced Custom Fields plugin. Since I’ve already used the woocommerce_product_options_general_product_data action hook, is there any way to make _nr_artist custom field public so that Ivory Search can search it?

The following is the snippet I’ve been using.

// Display Non-Representative (NR) Artist field
add_action( 'woocommerce_product_options_general_product_data', function() {
    // Text Field
    woocommerce_wp_text_input( 
        array( 
            'id' => '_nr_artist', 
            'label' => __( 'NR Artist', 'woocommerce' ), 
            'placeholder' => '',
            'desc_tip' => 'true',
            'description' => __( 'Enter the Non-Representative Artist\'s name, and it will override the Artist Category. Otherwise, just leave it blank.', 'woocommerce' ) 
        )
    );
});
    
// Save the value from the NR Artist field
add_action( 'woocommerce_process_product_meta', function( $post_id ) {
    // Save Text Field
    $text_field = $_POST['_nr_artist'];
    if ( !empty( $text_field ) ) {
        update_post_meta( $post_id, '_nr_artist', esc_attr( $text_field ) );
    }
});

Please advise. Thank you.

@vinod-dalvi Thank you. I must’ve forgotten having an underscore prefix turns the ID into a private custom field. I took your advice and changed everything from _nr_artist to nr_artist, and Ivory Search picked it up immediately.

Then, in WP admin, Ivory Search > Search Forms >> Search > Products (WooCommerce), activated Search selected product custom fields values, and selected nr_artist. Click Save Form, and this custom field is searchable. Alright!