Add Donor Comments To Donor Wall

add_action('charitable_donor_loop_after_donor', 'example_charitable_donor_loop_after_donor', 10, 2 );

function example_charitable_donor_loop_after_donor( $donor, $view_args ) {

	$user_id = $donor->get_user_id();

	$campaign_id = ! empty ( $view_args['campaign'] ) ? $view_args['campaign'] : 0;

	if ( 0 === $campaign_id ) {

		return;

	}

   $args = array(

        'user_id'   => $user_id,

        'post_id'   => $campaign_id,

        'status'    => 'approve',

        'number'    => 1,

        'orderby'   => 'comment_date_gmt',

        'order'     => 'DESC'

    );

    $comments = get_comments($args);

    if (!empty($comments)) {

        // Output comment content - you might want to alter this to allow additional HTML.

        echo esc_html($comments[0]->comment_content);

    } else {

       // Output nothing.

    }

}