Drupal 7 Module Development

Working with Content
Viewing artworks
The last line of our form submit handler redirected the user to the artwork/$aid
page, presumably to view the artwork we just created. That would be great if there
was a page there to display the artwork. Let's add that now.
First we need an appropriate menu item:
function artwork_menu() {
$items['artwork/%artwork'] = array(
'title callback' => 'artwork_page_title',
'title arguments' => array(1),
'page callback' => 'artwork_page_view',
'page arguments' => array(1),
'access arguments' => array('view artworks'),
'type' => MENU_CALLBACK,
);
$items['artwork/%artwork/view'] = array(
'title' => 'View',
'type' => MENU_DEFAULT_LOCAL_TASK,
'weight' => -10,
);
// ...
}
We are planning ahead for adding more tabs ("local tasks") later, but we definitely
want the View tab to be the default. The menu item defines a title callback and
page callback, both of which are reasonably straightforward.
function artwork_page_title($artwork) {
return $artwork->title;
}
function artwork_page_view($artwork, $view_mode = 'full') {
// Remove previously built content, if exists.
$artwork->content = array();
if ($view_mode == 'teaser') {
$artwork->content['title'] = array(
'#markup' => filter_xss($artwork->title),
'#weight' => -5,
);
}
// Build fields content.
field_attach_prepare_view('artwork',
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