我创建了一个自定义帖子类型来显示未来的事件，事件日期存储在自定义字段中（YYYY/MM/DD格式）。我希望此自定义帖子类型的管理屏幕按事件日期自定义字段自动排序。

试过MikeSchnickel的tutorial 在创建“排序依据”列时，我想我已经解决了需要使用类似于他使用的parse\\u查询过滤器的东西。但我似乎不能适应我的需要，

我对这样定制wordpress还很陌生，所以非常感谢一些简单的指导！

以下是我的代码，用于注册自定义类型的post（gs\\U事件），为自定义字段添加元框（event\\U date），并为admin屏幕设置自定义列。。。。

add_action(\'init\', \'my_custom_init\');

function my_custom_init() {
  $labels = array(
    \'name\' => _x(\'Events\', \'post type general name\'),
    \'singular_name\' => _x(\'Event\', \'post type singular name\'),
    \'add_new\' => _x(\'Add New\', \'event\'),
    \'add_new_item\' => __(\'Add New Event\'),
    \'edit_item\' => __(\'Edit Event\'),
    \'new_item\' => __(\'New Event\'),
    \'view_item\' => __(\'View Event\'),
    \'search_items\' => __(\'Search Events\'),
    \'not_found\' =>  __(\'No events found\'),
    \'not_found_in_trash\' => __(\'No events found in Trash\'), 
    \'parent_item_colon\' => \'\'
  );
  $args = array(
    \'labels\' => $labels,
    \'public\' => true,
    \'publicly_queryable\' => true,
    \'show_ui\' => true, 
    \'query_var\' => true,
    \'rewrite\' => array(\'slug\' => \'events\'),
    \'capability_type\' => \'post\',
    \'hierarchical\' => false,
    \'menu_position\' => 5,
    \'supports\' => array(\'title\',\'editor\',\'thumbnail\',\'comments\')
  ); 
  register_post_type(\'gs_events\',$args);
}

register_taxonomy("Location", array("gs_events"), array("hierarchical" => true, "label" => "Cities", "singular_label" => "City", "rewrite" => true));

add_action("admin_init", "admin_init");

function admin_init(){
  add_meta_box("event_date-meta", "Event Date", "event_date", "gs_events", "side", "high");
}

function event_date(){
  global $post;
  $custom = get_post_custom($post->ID);
  $event_date = $custom["event_date"][0];
  ?>
  <label>Date:</label>
  <input name="event_date" value="<?php echo $event_date; ?>" />
  <?php
}

add_action(\'save_post\', \'save_details\');

function save_details(){
  global $post;
  update_post_meta($post->ID, "event_date", $_POST["event_date"]);
}

add_action("manage_posts_custom_column",  "events_custom_columns");
add_filter("manage_edit-gs_events_columns", "events_edit_columns");

function events_edit_columns($columns){
  $columns = array(
    "cb" => "<input type=\\"checkbox\\" />",
    "title" => "Venue",
    "location" => "Location",
    "event_date" => "Date",
  );

  return $columns;
}
function events_custom_columns($column){
  global $post;

  switch ($column) {
    case "event_date":
      $custom = get_post_custom();
      echo $custom["event_date"][0];
      break;
    case "location":
      echo get_the_term_list($post->ID, \'Location\', \'\', \', \',\'\');
      break;
  }
}

add_filter( \'parse_query\', \'sort_movie_by_meta_value\' );
function sort_movie_by_meta_value($query) {
    global $pagenow;
    if (is_admin() && $pagenow==\'edit.php\' &&
            isset($_GET[\'post_type\']) && isset($_GET[\'post_type\'])==\'movie\' && 
            isset($_GET[\'sortby\'])  && $_GET[\'sortby\'] !=\'None\')  {
        $query->query_vars[\'orderby\'] = \'meta_value\';
        $query->query_vars[\'meta_key\'] = $_GET[\'sortby\'];
    }
}