Drupal 7 Module Development

Chapter 4
Before we begin building the required single_blog_block_item theme hook, let's
first add all the data we will need for the third version of our module. Looking back
at how we generate the items for our list, we can see that all the data we want is in
the $node variable.
// Create links for each blog entry.
$items = array();
foreach ($result as $node) {
$items[] = array(
'data' => array(
'#type' => 'link',
'#title' => $node->title,
'#href' => 'node/' . $node->nid,
),
'class' => array('node-' . $node->nid),
);
}
So, instead of creating a simple render element using bits of the $node variable, let's
just pass that entire variable to our new theme hook:
// Create links for each blog entry.
$items = array();
foreach ($result as $node) {
$items[] = array(
'data' => array(
'#theme' => 'single_blog_block_item',
'#node' => $node,
),
'class' => array('node-' . $node->nid),
);
}
hook_theme() implementations
We'll need to create a single_blog_theme() implementation of hook_theme() and
register a single_blog_block_item theme hook.
/**
* Implements hook_theme().
*/
function single_blog_theme($existing, $type, $theme, $path) {
return array(
'single_blog_block_item' => array(
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