Add WordPress custom taxonomy terms as css class

Thanks for replying, it’s driving me insane. Feel like I’m missing something really simple.

The output for var_dump( $child_page ) is:

object(WP_Post)#341 (24) {
["ID"]=> int(196)
["post_author"]=> string(1) "1"
["post_date"]=> string(19) "2014-05-24 14:51:20"
["post_date_gmt"]=> string(19) "2014-05-24 14:51:20"
["post_content"]=> string(0) ""
["post_title"]=> string(17) "Fordlandia: domus"
["post_excerpt"]=> string(0) ""
["post_status"]=> string(7) "publish"
["comment_status"]=> string(6) "closed"
["ping_status"]=> string(6) "closed"
["post_password"]=> string(0) ""
["post_name"]=> string(16) "fordlandia-domus"
["to_ping"]=> string(0) ""
["pinged"]=> string(0) ""
["post_modified"]=> string(19) "2014-06-25 11:20:22"
["post_modified_gmt"]=> string(19) "2014-06-25 11:20:22"
["post_content_filtered"]=> string(0) ""
["post_parent"]=> int(194)
["guid"]=> string(67) "http://www.iofpi.co.uk/civicworks.net/?post_type=archive&p=196"
["menu_order"]=> int(1)
["post_type"]=> string(7) "archive"
["post_mime_type"]=> string(0) ""
["comment_count"]=> string(1) "0"
["filter"]=> string(3) "raw"
}

And the output for var_dump( $terms ) is:

array(1) {
[5]=> object(stdClass)#82 (11) {
["term_id"]=> int(5)
["name"]=> string(11) "Publication"
["slug"]=> string(11) "publication"
["term_group"]=> int(0)
["term_taxonomy_id"]=> int(10)
["taxonomy"]=> string(5) "media"
["description"]=> string(0) ""
["parent"]=> int(0)
["count"]=> int(1)
["object_id"]=> int(196)
["filter"]=> string(3) "raw"
}

The full code I’m using to get the parent and sub pages is:

<?php

    $parent_pages = get_pages( array( 'parent' => 0, 'post_type'=> 'archive', 'orderby' => 'menu_order' , 'order' => 'ASC', 'sort_column' => 'menu_order' ) );
    foreach ( $parent_pages as $parent_page ) {

    echo '<h1 class="page-heading" id="';
    echo $parent_page->post_name;
    echo '">';

    echo $parent_page->post_title;
    echo '</h1>';
     echo '<div class="wrapper grid4">';

    $all_pages = get_pages(array( 'post_type'=> 'archive',  'orderby' => 'menu_order' , 'order' => 'ASC', 'sort_column' => 'menu_order' ) );
    $child_pages = get_page_children($parent_page->ID, $all_pages );
    foreach ( $child_pages as $child_page ) {
       $terms = get_the_terms( $child_page->ID, 'media' );
      echo '<article class="post col ' . $terms->slug .'">';

     echo '<a class="fancybox" data-fancybox-type="iframe" href="http://www.iofpi.co.uk/civicworks.net/wp-content/plugins/pdfjs-viewer-shortcode/web/viewer.php?file=http://www.iofpi.co.uk/civicworks.net/wp-content/uploads/2014/05/Citizen_Manchester.pdf" title="' . the_title_attribute('echo=0') . '" >';

      echo get_the_post_thumbnail( $child_page->ID, 'medium');

      echo '</a>';

        echo '<h1>';
      echo $child_page->post_title;
      echo '</h1>';

      echo '</article>';
    }
         echo '</div>';
      }
      ?>

Hi Leo

Thanks for replying. I tried your code and I’m afraid it still doesn’t return the term.

Any other ideas?

Thanks.

Thanks again, sadly still doesn’t return the term 🙁

Brillant, thanks! I actually used the following because I was getting an invalid argument:

foreach ((array) $terms as $term) {
    echo '<article class="post col ' . $term->slug .'">';
  }

Many thanks for all your help very much appreciated.