我在我的functions.php 中设置了一个自定义帖子类型'Portfolio'。我刚刚为其添加了层次结构功能，因此我可以分配子帖子等。
这很好用，我可以在其中分配孩子/父母，但是，通过添加行...
'hierarchical' => true,
...至...
$args
...导致帖子概览列表（所有帖子都列在一个表格中，其中包含定义的数据列，如标题、标签、缩略图等）按 post_title 排序 ASC，缩略图消失。删除此行或将其值设置为 false，会将所有内容恢复为我喜欢的方式，即按 publish_date 排序并且存在缩略图，但当然没有我需要的层次结构功能。
如何保持分层功能并让帖子列表中的列按我的意愿显示？按最新排序并显示缩略图？
这是我的代码...
/*
* Custom Post Type - Portfolio
*/
if ( ! class_exists( 'Portfolio_Post_Type' ) ) :
class Portfolio_Post_Type {
var $version = 0.5;
function __construct() {
register_activation_hook( __FILE__, array( &$this, 'plugin_activation' ) );
load_plugin_textdomain( 'portfolioposttype', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
add_action( 'init', array( &$this, 'portfolio_init' ) );
add_theme_support( 'post-thumbnails', array( 'portfolio' ) );
add_filter( 'manage_edit-portfolio_columns', array( &$this, 'add_thumbnail_column'), 10, 1 );
add_action( 'manage_posts_custom_column', array( &$this, 'display_thumbnail' ), 10, 1 );
add_action( 'restrict_manage_posts', array( &$this, 'add_taxonomy_filters' ) );
add_action( 'right_now_content_table_end', array( &$this, 'add_portfolio_counts' ) );
add_action( 'admin_head', array( &$this, 'portfolio_icon' ) );
}
function plugin_activation() {
$this->portfolio_init();
flush_rewrite_rules();
}
function portfolio_init() {
$labels = array(
'name' => __( 'Portfolio', 'portfolioposttype' ),
'singular_name' => __( 'Portfolio Item', 'portfolioposttype' ),
'add_new' => __( 'Add New Item', 'portfolioposttype' ),
'add_new_item' => __( 'Add New Portfolio Item', 'portfolioposttype' ),
'edit_item' => __( 'Edit Portfolio Item', 'portfolioposttype' ),
'new_item' => __( 'Add New Portfolio Item', 'portfolioposttype' ),
'view_item' => __( 'View Item', 'portfolioposttype' ),
'search_items' => __( 'Search Portfolio', 'portfolioposttype' ),
'not_found' => __( 'No portfolio items found', 'portfolioposttype' ),
'not_found_in_trash' => __( 'No portfolio items found in trash', 'portfolioposttype' )
);
$args = array(
'labels' => $labels,
'parent_item_colon' => 'PP',
'public' => true,
'supports' => array( 'title', 'editor', 'excerpt', 'thumbnail', 'comments', 'author', 'custom-fields', 'revisions', 'page-attributes' ),
'capability_type' => 'page',
'rewrite' => array("slug" => "portfolio"),
'menu_position' => 5,
'hierarchical' => true,
'has_archive' => true
);
$args = apply_filters('portfolioposttype_args', $args);
register_post_type( 'portfolio', $args );
$taxonomy_portfolio_tag_labels = array(
'name' => _x( 'Portfolio Tags', 'portfolioposttype' ),
'singular_name' => _x( 'Portfolio Tag', 'portfolioposttype' ),
'search_items' => _x( 'Search Portfolio Tags', 'portfolioposttype' ),
'popular_items' => _x( 'Popular Portfolio Tags', 'portfolioposttype' ),
'all_items' => _x( 'All Portfolio Tags', 'portfolioposttype' ),
'parent_item' => _x( 'Parent Portfolio Tag', 'portfolioposttype' ),
'parent_item_colon' => _x( 'Parent Portfolio Tag:', 'portfolioposttype' ),
'edit_item' => _x( 'Edit Portfolio Tag', 'portfolioposttype' ),
'update_item' => _x( 'Update Portfolio Tag', 'portfolioposttype' ),
'add_new_item' => _x( 'Add New Portfolio Tag', 'portfolioposttype' ),
'new_item_name' => _x( 'New Portfolio Tag Name', 'portfolioposttype' ),
'separate_items_with_commas' => _x( 'Separate portfolio tags with commas', 'portfolioposttype' ),
'add_or_remove_items' => _x( 'Add or remove portfolio tags', 'portfolioposttype' ),
'choose_from_most_used' => _x( 'Choose from the most used portfolio tags', 'portfolioposttype' ),
'menu_name' => _x( 'Portfolio Tags', 'portfolioposttype' )
);
$taxonomy_portfolio_tag_args = array(
'labels' => $taxonomy_portfolio_tag_labels,
'public' => true,
'show_in_nav_menus' => true,
'show_ui' => true,
'show_tagcloud' => true,
'hierarchical' => false,
'rewrite' => array( 'slug' => 'portfolio_tag' ),
'show_admin_column' => true,
'query_var' => true
);
register_taxonomy( 'portfolio_tag', array( 'portfolio' ), $taxonomy_portfolio_tag_args );
$taxonomy_portfolio_category_labels = array(
'name' => _x( 'Portfolio Categories', 'portfolioposttype' ),
'singular_name' => _x( 'Portfolio Category', 'portfolioposttype' ),
'search_items' => _x( 'Search Portfolio Categories', 'portfolioposttype' ),
'popular_items' => _x( 'Popular Portfolio Categories', 'portfolioposttype' ),
'all_items' => _x( 'All Portfolio Categories', 'portfolioposttype' ),
'parent_item' => _x( 'Parent Portfolio Category', 'portfolioposttype' ),
'parent_item_colon' => _x( 'Parent Portfolio Category:', 'portfolioposttype' ),
'edit_item' => _x( 'Edit Portfolio Category', 'portfolioposttype' ),
'update_item' => _x( 'Update Portfolio Category', 'portfolioposttype' ),
'add_new_item' => _x( 'Add New Portfolio Category', 'portfolioposttype' ),
'new_item_name' => _x( 'New Portfolio Category Name', 'portfolioposttype' ),
'separate_items_with_commas' => _x( 'Separate portfolio categories with commas', 'portfolioposttype' ),
'add_or_remove_items' => _x( 'Add or remove portfolio categories', 'portfolioposttype' ),
'choose_from_most_used' => _x( 'Choose from the most used portfolio categories', 'portfolioposttype' ),
'menu_name' => _x( 'Portfolio Categories', 'portfolioposttype' ),
);
$taxonomy_portfolio_category_args = array(
'labels' => $taxonomy_portfolio_category_labels,
'public' => true,
'show_in_nav_menus' => true,
'show_ui' => true,
'show_admin_column' => true,
'show_tagcloud' => true,
'hierarchical' => true,
'rewrite' => array( 'slug' => 'portfolio_category' ),
'query_var' => true
);
register_taxonomy( 'portfolio_category', array( 'portfolio' ), $taxonomy_portfolio_category_args );
}
function add_thumbnail_column( $columns ) {
$column_thumbnail = array( 'thumbnail' => __('Thumbnail','portfolioposttype' ) );
$columns = array_slice( $columns, 0, 2, true ) + $column_thumbnail + array_slice( $columns, 1, NULL, true );
return $columns;
}
function display_thumbnail( $column ) {
global $post;
switch ( $column ) {
case 'thumbnail':
echo get_the_post_thumbnail( $post->ID, array(35, 35) );
break;
}
}
function add_taxonomy_filters() {
global $typenow;
$taxonomies = array( 'portfolio_category', 'portfolio_tag' );
if ( $typenow == 'portfolio' ) {
foreach ( $taxonomies as $tax_slug ) {
$current_tax_slug = isset( $_GET[$tax_slug] ) ? $_GET[$tax_slug] : false;
$tax_obj = get_taxonomy( $tax_slug );
$tax_name = $tax_obj->labels->name;
$terms = get_terms($tax_slug);
if ( count( $terms ) > 0) {
echo "<select name='$tax_slug' id='$tax_slug' class='postform'>";
echo "<option value=''>$tax_name</option>";
foreach ( $terms as $term ) {
echo '<option value=' . $term->slug, $current_tax_slug == $term->slug ? ' selected="selected"' : '','>' . $term->name .' (' . $term->count .')</option>';
}
echo "</select>";
}
}
}
}
function add_portfolio_counts() {
if ( ! post_type_exists( 'portfolio' ) ) {
return;
}
$num_posts = wp_count_posts( 'portfolio' );
$num = number_format_i18n( $num_posts->publish );
$text = _n( 'Portfolio Item', 'Portfolio Items', intval($num_posts->publish) );
if ( current_user_can( 'edit_posts' ) ) {
$num = "<a href='edit.php?post_type=portfolio'>$num</a>";
$text = "<a href='edit.php?post_type=portfolio'>$text</a>";
}
echo '<td class="first b b-portfolio">' . $num . '</td>';
echo '<td class="t portfolio">' . $text . '</td>';
echo '</tr>';
if ($num_posts->pending > 0) {
$num = number_format_i18n( $num_posts->pending );
$text = _n( 'Portfolio Item Pending', 'Portfolio Items Pending', intval($num_posts->pending) );
if ( current_user_can( 'edit_posts' ) ) {
$num = "<a href='edit.php?post_status=pending&post_type=portfolio'>$num</a>";
$text = "<a href='edit.php?post_status=pending&post_type=portfolio'>$text</a>";
}
echo '<td class="first b b-portfolio">' . $num . '</td>';
echo '<td class="t portfolio">' . $text . '</td>';
echo '</tr>';
}
}
function portfolio_icon() { ?>
<style type="text/css" media="screen">
#menu-posts-portfolio .wp-menu-image {
background: url(<?php echo bloginfo('stylesheet_directory'); ?>/assets/img/portfolio-icon.png) no-repeat 6px 6px !important;
}
#menu-posts-portfolio:hover .wp-menu-image, #menu-posts-portfolio.wp-has-current-submenu .wp-menu-image {
background-position:6px -16px !important;
}
#icon-edit.icon32-posts-portfolio {background: url(<?php echo bloginfo('stylesheet_directory'); ?>/assets/img/portfolio-32x32.png) no-repeat;}
</style>
<?php }
}
new Portfolio_Post_Type;
endif;