WordPress 后台文章列表添加自定义分类法筛选

add_action( 'restrict_manage_posts', 'erphp_task_filter_by_taxonomies' , 10, 2);

function erphp_task_filter_by_taxonomies( $post_type, $which ) {

if ( 'task' !== $post_type )

return;

$taxonomies = array( 'tasks' );//这里可以加多个自定义分类法

foreach ( $taxonomies as $taxonomy_slug ) {

$taxonomy_obj = get_taxonomy( $taxonomy_slug );

$taxonomy_name = $taxonomy_obj->labels->name;

$terms = get_terms( $taxonomy_slug );

echo "<select name='{$taxonomy_slug}' id='{$taxonomy_slug}' class='postform'>";

echo '<option value="">' . sprintf( esc_html__( '%s', 'text_domain' ), $taxonomy_name ) . '</option>';

foreach ( $terms as $term ) {

printf(

'<option value="%1$s" %2$s>%3$s (%4$s)</option>',

$term->slug,

( ( isset( $_GET[$taxonomy_slug] ) && ( $_GET[$taxonomy_slug] == $term->slug ) ) ? ' selected="selected"' : '' ),

$term->name,

$term->count

);

}

echo '</select>';

}

}