I'm using GridBuilder WP (great plugin, average support) to show a grid of a custom post type. Ultimately, I need to show an ACF taxonomy field, and their support have recommended using one of their nifty Custom Blocks, but at the moment I'm struggling to just show a text field (as a test) in a Custom Block. This is the suggested code, but it always shows the label "Email" with an empty field, even though there is a normal block above showing the custom field successfully.

    function( $blocks ) {

        $blocks['email_block'] = [
            'name'            => __( 'Email block', 'text-domain' ),
            'render_callback' => function() {

                // Get email from ACF field.
                global $post;
                $post = wpgb_get_post();
                setup_postdata( $post );
                $email = get_field('email');

                if( $email ) {
                        '<a href="mailto:%1$s" rel="external noopener noreferrer" target="_blank">%2$s</a>',
                        esc_attr( rawurlencode( $email ) ),
                        esc_html( 'Email' )


        return $blocks;


Has anyone managed to show custom fields in a Gridbuilder WP custom block?

1 Answer 1


Not sure if you have already resolved your issue, but I am in a similar situation. You could take a look at this webpage for guidance:


  • 2
    Please edit your question to include the relevant information. Links to external resources are great, but link-only answers only work as long as the external link doesn't 404 on us. (See How do I write a good answer? for more info.)
    – Pat J
    Commented Nov 2, 2022 at 16:43
  • 1
    Whoops, that should be "edit your answer", regret the error.
    – Pat J
    Commented Nov 2, 2022 at 18:59

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