我创建了一个画廊帖子类型（作为插件的一部分），除了标题和一些元信息之外，还包含wp_list_table查询那些具有当前帖子的附件的元信息post_parent。当我的发布按钮突然停止工作时，我遇到了问题。无论我是在创建新画廊还是在编辑旧画廊，一旦我点击更新/发布，我的更改就会丢失，最终会出现在edit.php.
有人知道那是怎么回事吗？
我能够找出问题似乎出在哪里。它在我的 list_table 类中，它继承自wp_list_table. 在注释掉一些不重要的功能后，我得到了一个不同的错误，但仍然没有新的或更新的画廊。现在我得到了are you sure you want to do this页面。
即使是最基础的课程也不会工作......
if( ! class_exists( 'WP_List_Table' ) ) {
require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}
class Yard_Attachment_Table extends WP_List_Table {
function __construct() {
global $status, $page;
parent::__construct( array(
'singular' => 'yard Attachment',
'plural' => 'yard Attachments',
'ajax' => false
) );
}
function column_default($item, $column_name) {
return 'default';
}
function get_columns(){
$columns = array(
'checkbox' => '<input type="checkbox" />', //for simplicity its not 'cb'
'thumb' => 'Thumbnail',
'title' => 'Titel',
'pos' => 'Position'
);
return $columns;
}
function prepare_items() {
global $wpdb;
$columns = $this->get_columns();
$hidden = array();
$sortable = $this->get_sortable_columns();
$this->_column_headers = array($columns, $hidden, $sortable);
if (isset($_REQUEST['post'])) {
$query = " SELECT *
FROM $wpdb->posts
WHERE post_type = 'attachment'
AND post_parent = {$_REQUEST['post']}";
$data = $wpdb->get_results($query, ARRAY_A);
} else {
$data = array();
}
$this->items = $data;
}
}
在插件类的构造函数中，我使用
add_action('add_meta_boxes_yard_gallery', array($this, 'yard_metaboxes'));.
在yard_metaboxes我使用add_meta_box的函数中，我有一个回调函数，我正在创建new我的表类的一个实例，然后我调用prepare_items()和display()
在我的页面上打开 error_reporting 会因以下消息而死：
Strict Standards: Only variables should be passed by reference in /Applications/MAMP/htdocs/Web/ChristophRokitta/wp v.1.0/wp-includes/pomo/mo.php on line 210
Warning: Cannot modify header information - headers already sent by (output started at /Applications/MAMP/htdocs/Web/ChristophRokitta/wp v.1.0/wp-includes/pomo/mo.php:210) in /Applications/MAMP/htdocs/Web/ChristophRokitta/wp v.1.0/wp-includes/pluggable.php on line 876
顺便说一句，我没有本地化。
请帮忙！如果我有更多的声誉，我会提供它。
添加元框代码
在我的插件文件中：
require_once( plugin_dir_path( __FILE__ ) . 'class-yard.php' );
Yard::get_instance();
在我的类场文件中，元框方法位于底部：
class Yard {
protected static $instance = null;
private function __construct() {
include_once('class-yard-attachments.php');
add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_styles' ) );
add_action('after_setup_theme', array($this, 'yard_thumbnails'));
add_action('init', array($this, 'yard_post_type'));
add_action('init', array($this, 'yard_taxonomies'));
add_filter('manage_yard_gallery_posts_columns', array($this, 'yard_add_columns'));
add_action('manage_posts_custom_column', array($this, 'yard_fill_columns'));
add_action('add_meta_boxes_yard_gallery', array($this, 'yard_metaboxes'));
}
public static function get_instance() {// If the single instance hasn't been set, set it now.
if (null == self::$instance ) {
self::$instance = new self;
}
return self::$instance;
}
public function enqueue_admin_styles() {
$screen = get_current_screen();
if ($screen->post_type == 'yard_gallery') {
wp_register_style( 'yard-gallery-style', plugins_url('css/yard-gallery-style.css', __FILE__) );
wp_enqueue_style( 'yard-gallery-style' );
}
}
public function yard_thumbnails() {
//add_image_size('yard-thumbnail', 100, 100, true);
}
public function yard_post_type() {
$gallery_labels = array(
'name' => 'Galerien',
'singular_name' => 'Galerie',
'all_items' => 'Alle Galerien',
'add_new' => 'Erstellen',
'add_new_item' => 'Neue Galerie erstellen',
'edit_item' => 'Galerie bearbeiten',
'new_item' => 'Neue Galerie',
'view' => 'Galerie anzeigen',
'view_item' => 'Gallerie anzeigen',
'search_items' => 'Galerie durchsuchen',
'not_found' => 'Keine Galerien gefunden',
'not_found_in_trash' => 'Es befinden sich keine Galerien im Papierkorb',
'parent_item_colon' => ''
);
$gallery_args = array(
'labels' => $gallery_labels,
'public' => true,
// 'publicly_queryable' => true,
// 'show_ui' => true,
// 'show_in_menu' => true,
// 'query_var' => true,
'rewrite' => true,
// 'capability_type' => 'post',
// 'hierarchical' => false,
'menu_position' => 12,
'supports' => array(
'title'
)
// 'menu_icon' => plugin_dir_url(__FILE__) . '/assets/icon_16_grey.png'//16x16 png if you want an icon
);
register_post_type('yard_gallery', $gallery_args);
}
public function yard_taxonomies() {
register_taxonomy(
'yard_work_type',
'yard_gallery',
array(
'hierarchical' => true,
'label' => 'Art der Arbeit'
)
);
register_taxonomy(
'yard_subject',
'yard_gallery',
array(
'hierarchical' => true,
'label' => 'Motiv'
)
);
}
public function yard_add_columns( $columns ){
$columns = array(
'cb' => '<input type="checkbox">',
'yard_post_thumb' => 'Thumbnail',
'title' => 'Bezeichnung',
'yard_pos' => 'Position',
'date' => 'Datum'
);
return $columns;
}
public function yard_fill_columns( $column ) {
global $post;
switch ($column) {
case 'yard_post_thumb' :
echo the_post_thumbnail('admin-list-thumb');
break;
}
}
public function yard_metaboxes( $post ) {
global $wp_meta_boxes;
add_meta_box(
'yard-attachments',
'Bilder',
array($this, 'get_yard_attachment_table'),
'yard_gallery'
);
}
public function get_yard_attachment_table() {
$yard_list_table = new Yard_Attachment_Table();
$yard_list_table->prepare_items();
$yard_list_table->display();
}
}