Drupal 7 Module Development

Working with Content
drupal_set_title(t('Edit @type @title', array('@type' =>
$types[$artwork->type]->name, '@title' => $artwork->title)),
PASS_THROUGH);
}
return drupal_get_form($artwork->type . '_artwork_form', $artwork);
The edit page callback is simple enough that we could almost get away with not
having it at all and just calling the form directly from the menu system. However,
since the form name is dynamic based on the artwork type we have to have a
small function here. Note too that we're setting a dynamic title and again allowing
HTML through.
That's it! The form we built earlier handles both new and existing artworks just the
same, so editing an artwork, including saving new revisions, is done.
Deleting an artwork
The final missing piece is the ability to delete an artwork. Naturally we don't want to
let users do so on a whim, so we'll give them a confirmation form.
Recall earlier that in our artwork edit form we had a Delete button with its own
submit handler. First we need to define that submit handler:
function artwork_form_delete_submit($form, &$form_state) {
$destination = array();
if (isset($_GET['destination'])) {
$destination = drupal_get_destination();
unset($_GET['destination']);
}
$artwork = $form['#artwork'];
$form_state['redirect'] = array('artwork/' . $artwork->aid . '/
delete', array('query' => $destination));
}
All this submit handler does is redirect the user to artwork/$aid/delete. The rest
of the code there is simply to handle Drupal's page redirect system, which we can
largely copy and paste. At that path we'll put a confirmation form so that users have
to confirm they really mean to delete an artwork:
function artwork_menu() {
$items['artwork/%artwork/delete'] = array(
'title' => 'Delete',
'page callback' => 'drupal_get_form',
'page arguments' => array('artwork_delete_confirm', 1),
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