Change user drop down to auto_complete

[Michael Lustfield]

The user selection should move from a drop down to an auto complete to ease the implementation in large environments.

[Michael Lustfield (michaellustfield)]

This is implemented but not fully error checking in r41.

[Pierre Buyle (mongolito404)]

The User module provides a MENU_CALLBACK for user autocomplete.

In the form builder

$from['user'] = array(
      '#type' => 'textfield',
      '#title' => t('User'),
      '#autocomplete_path' => 'user/autocomplete',
      '#default_value' => isset($form_state['values']['user']) ? $form_state['values']['user'] : '',
      '#required' => TRUE,
);

In the form validation

$username = $form_state['values']['user'];
$user = user_load(array('name' => $username));
if(!$user) {
      form_set_error('dest', t('Unknown user %username', array('%username' => $username)));
}

The user_load has to be repeated in the submit handler.

[Michael Lustfield (michaellustfield)]

Finished off in r42