Imagine this simple

 $items = array(

And theme a block content like

 $content = array(
   'subject'   => t('Block title'),
   'content'   => array(
     '#theme'  => 'item_list',
     '#items'  => $items,
     '#attributes' => array('class' => 'my-UL'),

$extra_items is getting values from a custom hook that may be empty!In that case theme_item_list() brings an empty <li></li> for that item that is NULL

How can i ensure that this <li></li> is displayed only when this item has a value?

  • 2
    I'm not sure I understand. Why can't you run array_filter or similar on $items ? – Alice Heaton Mar 22 '13 at 16:14
  • I could try that, but it seems weird that theme_item_list doesn't take care of that.. – Pan Chrono Mar 23 '13 at 9:03
  • @AliceHeaton array_filter() worked perfectly, if you convert your comment to an answer i 'd be happy to accept it, cheers – Pan Chrono Mar 26 '13 at 14:33

You simply need to run array_filter on $items - this will remove the empty entries.

Whether this should be handled by theme_item_list or not is debatable. It doesn't make semantic sense to theme empty list items - however in most cases the filtering would not be necessary, so from a performance point of view it doesn't make sense for theme_item_list to do it.

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