Drupal 7 Module Development

Chapter 12
Notice that $install_state is passed in as a third variable into the form function.
This is different from typical form functions in the Form API. It provides access to
the state and information in the installer.
Setting the page title
Setting the display_name for a task only sets the title in the list of
installer tasks. To set the page title, use drupal_set_title(). For full
details on using drupal_set_title() see the API documentation at
http://api.drupal.org/api/function/drupal_set_title/7.
Just like other Form API functions we have access to the store_configure_
contact_form_validate() and store_configure_contact_form_submit()
functions, as seen below:
function store_configure_contact_form_validate($form, &$form_state) {
// Validate and each e-mail recipient.
$recipients = explode(',', $form_state['values']['recipients']);
foreach ($recipients as &$recipient) {
$recipient = trim($recipient);
if (!valid_email_address($recipient)) {
form_set_error('recipients', t('%recipient is an invalid e-mail
address.', array('%recipient' => $recipient)));
}
}
form_set_value($form['recipients'], implode(',', $recipients),
$form_state);
}
function store_configure_contact_form_submit($form, &$form_state) {
$values = $form_state['values'];
$values += array(
'cid' => 1,
);
drupal_write_record('contact', $values, array('cid'));
watchdog('contact', 'The default category has been updated.',
array(), WATCHDOG_NOTICE, l(t('Edit'), 'admin/structure/contact/edit/'
. $values['cid']));
}
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