drupal - 需要在 Drupal 中保留下拉列表值

Question

我在 Drupal 中使用 time_tracker_simple 模块。当有人从下拉列表中选择并点击提交时，它会停留在同一页面上，但不会保留该值。选择后如何保留下拉列表的值。

下面是模块中使用的代码。

  function time_tracker_simple_timer_form($form_state) {
  global $user;
  $active_timer = _time_tracker_simple_get_timer();
  //*** Both start and start buttons must actually be on the form for #submit to work correctly
  $form['stop'] = array(
    '#value' => t('Stop'),
    '#type' => 'submit',
    '#weight' => 20,
    '#access' => FALSE,
    '#button_type' => 'timer_control_stop',
    '#submit' => array('time_tracker_simple_timer_stop'),
  );
  $form['start'] = array(
    '#value' => t('Start'),
    '#type' => 'submit',
    '#access' => FALSE,
    '#weight' => 20,
    '#submit' => array('time_tracker_simple_timer_start'),
    '#button_type' => 'timer_control_start',
  );-----This part is the drop down list------
  $activities = array();
  $activities[] = '(none)';
  $results = db_query("SELECT * FROM {time_tracker_activity} ORDER BY weight ASC");
  while ($result = db_fetch_object($results)) {
    $activities[$result->taid] = $result->name;
  }
  if (count($activities) > 1) {
    // The activity choser
    $form['activity'] = array(
      '#title' => t('Activity'),
      '#type' => 'select',
      '#weight' => 5,
      '#options' => $activities,
    );
  }

Answer 1

drupal 表单 api 允许您将默认值传递给表单项，如下所示：

$form['activity'] = array(
      '#title' => t('Activity'),
      '#type' => 'select',
      '#weight' => 5,
      '#options' => $activities,
      '#default_value' => $form_state['post']['activity']
    );