File

drupal-6.x/update.php, line 201

Administrative page for handling updates from one Drupal version to another.

Code

function update_script_selection_form() {
  $form = array();
  $form['start'] = array(
    '#tree' => TRUE,
    '#type' => 'fieldset',
    '#title' => 'Select versions',
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
  );

  // Ensure system.module's updates appear first
  $form['start']['system'] = array();

  $modules = drupal_get_installed_schema_version(NULL, FALSE, TRUE);
  foreach ($modules as $module => $schema_version) {
    $updates = drupal_get_schema_versions($module);
    // Skip incompatible module updates completely, otherwise test schema versions.
    if (!update_check_incompatibility($module) && $updates !== FALSE && $schema_version >= 0) {
      // module_invoke returns NULL for nonexisting hooks, so if no updates
      // are removed, it will == 0.
      $last_removed = module_invoke($module, 'update_last_removed');
      if ($schema_version < $last_removed) {
        $form['start'][$module] = array(
          '#value' => '<em>' . $module . '</em> module can not be updated. Its schema version is ' . $schema_version . '. Updates up to and including ' . $last_removed . ' have been removed in this release. In order to update <em>' . $module . '</em> module, you will first <a href="http://drupal.org/upgrade">need to upgrade</a> to the last version in which these updates were available.',
          '#prefix' => '<div class="warning">',
          '#suffix' => '</div>',
        );
        $form['start']['#collapsed'] = FALSE;
        continue;
      }
      $updates = drupal_map_assoc($updates);
      $updates[] = 'No updates available';
      $default = $schema_version;
      foreach (array_keys($updates) as $update) {
        if ($update > $schema_version) {
          $default = $update;
          break;
        }
      }
      $form['start'][$module] = array(
        '#type' => 'select',
        '#title' => $module . ' module',
        '#default_value' => $default,
        '#options' => $updates,
      );
    }
  }

  $form['has_js'] = array(
    '#type' => 'hidden',
    '#default_value' => FALSE,
  );
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => 'Update',
  );
  return $form;
}