我已将代码添加到我的function.php
文件中,以将帖子的特色图片添加到我的管理列。它适用于帖子和页面,但对于我的两种自定义帖子类型(汽车,轮子),它对管理布局没有任何作用。
有人可以帮我吗?我是否需要为每个自定义添加过滤器?
我从这里得到了这段代码:Add featured image thumbnail to WordPress admin columns
我的function.php
文件中的以下代码:
// Add the posts and pages columns filter. They can both use the same function.
add_filter('manage_posts_columns', 'tcb_add_post_thumbnail_column', 5);
add_filter('manage_pages_columns', 'tcb_add_post_thumbnail_column', 5);
add_filter('manage_custom_post_columns', 'tcb_add_post_thumbnail_column', 5);
// Add the column
function tcb_add_post_thumbnail_column($cols){
$cols['tcb_post_thumb'] = __('FeaTured');
return $cols;
}
// Hook into the posts an pages column managing. Sharing function callback again.
add_action('manage_posts_custom_column', 'tcb_display_post_thumbnail_column', 5, 2);
add_action('manage_pages_custom_column', 'tcb_display_post_thumbnail_column', 5, 2);
add_action('manage_custom_post_column', 'tcb_display_post_thumbnail_column', 5, 2);
// Grab featured-thumbnail size post thumbnail and display it.
function tcb_display_post_thumbnail_column($col, $id){
switch($col){
case 'tcb_post_thumb':
if( function_exists('the_post_thumbnail') )
echo the_post_thumbnail( 'admin-list-thumb' );
else
echo 'Not supported in theme';
break;
}
}
答案 0 :(得分:1)
您是否在帖子类型中启用了缩略图支持?
例如,我的wp-glossary插件注册了一个词汇表帖子类型,该帖子类型具有帖子功能(默认)和启用缩略图,并且它开箱即用:
add_action('init', 'tcb_glossary_register_posttype_glossary');
function tcb_glossary_register_posttype_glossary() {
register_post_type( 'glossary',
array(
'labels' => array(
'name' => __( 'Glossary Terms' ),
'singular_name' => __( 'Glossary Term' ),
'add_new' => __( 'Add New Term' ),
'add_new_item' => __( 'Add New Glossary Term' ),
'edit_item' => __( 'Edit Glossary Term' ),
'new_item' => __( 'Add New Glossary Term' ),
'view_item' => __( 'View Glossary Term' ),
'search_items' => __( 'Search Glossary Terms' ),
'not_found' => __( 'No Glossary Terms found' ),
'not_found_in_trash' => __( 'No Glossary Terms found in trash' )
),
'public' => true,
'menu_position' => 105,
'supports' => array( 'title', 'editor', 'thumbnail' ),
'has_archive' => true,
)
);
flush_rewrite_rules( false );
}
感谢您访问我的网站并尝试使用我的代码:)
答案 1 :(得分:1)
我为我的图库文章类型创建了以下代码,它正在100%工作,您可以将图库更改为发布类型名称。
首先添加缩略图支持。和预览的图像大小
add_theme_support( 'post-thumbnails' );
add_image_size( 'gallery-post-prev', 50, 50, true );
然后设置缩略图。
现在在functions.php中创建一个函数来获取特色imgae
/**
* get featured image function
*/
function gallery_featured_image($post_ID) {
$post_thumbnail_id = get_post_thumbnail_id($post_ID);
if ($post_thumbnail_id) {
$post_thumbnail_img = wp_get_attachment_image_src($post_thumbnail_id, 'gallery-post-prev');
return $post_thumbnail_img[0];
}
}
现在创建一个列头,这是列的标题,在我们的例子中它是“特色图像”
/**
* add column heading
*/
function gallery_columns_head($defaults) {
$defaults['featured_image'] = 'Featured Image';
return $defaults;
}
现在创建列内容,在我们的示例中,我们将在列中显示特色图像。
/**
* show featured image in column
*/
function gallery_columns_content($column_name, $post_ID) {
if ($column_name == 'featured_image') {
$post_featured_image = gallery_featured_image($post_ID);
if ($post_featured_image) {
echo '<img src="' . $post_featured_image . '" />';
}
}
}
现在添加过滤器以显示我们创建的列标题
add_filter('manage_gallery_posts_columns', 'gallery_columns_head', 10);
并添加动作钩子以显示列内容中的特色图像。
`add_action('manage_gallery_posts_custom_column', 'gallery_columns_content', 10, 2);`
答案 2 :(得分:0)
我正在使用自定义帖子类型实现自定义主题,并发现我需要添加对帖子类型的支持以及在主题中声明它。如下:
register_post_type( 'team',
array(
'labels' => array(
'name' => __( 'Team Members' ),
'singular_name' => __( 'Team Member' )
),
'public' => true,
'has_archive' => true,
'supports' => array( 'title', 'editor', 'thumbnail' ),
)
);
add_theme_support( 'post-thumbnails', array( 'team' ) );
请注意,它在register_post_type()参数中为“supports”,并在add_theme_support()调用中显式声明。
欣赏精选图片!