Question

我在媒体列表视图中创建了一个过滤器下拉列表，以根据所选术语过滤媒体文件。下拉列表使用自定义分类项呈现正常。但是过滤器根本不起作用。无论我从这个下拉列表中选择的术语如何列出所有媒体项目。没有过滤。

这是我创建过滤器下拉列表的代码（在funcitons.php中）：

function media_add_content_category_filter_dropdown()
{
    $scr = get_current_screen();
    if ( $scr->base !== 'upload' ) return;

    $terms = get_terms('media_content_category', array('hide_empty' => false));
    if ( $terms ) {
        printf( '<select name="%s" class="postform">', esc_attr( 'mcfdd' ) );
        print( '<option value="">All Categories</option>');
        foreach ( $terms as $term ) {
            printf( '<option value="%s">%s</option>', esc_attr( $term->term_id ), esc_html( $term->name ) );
        }
        print( '</select>' );
    }
}

add_action('restrict_manage_posts', 'media_add_content_category_filter_dropdown');

这是我用于过滤目的的代码：

function media_content_filter($query) {
    if ( is_admin() && $query->is_main_query() ) {
        if (isset($_GET['mcfdd']) && $_GET['mcfdd'] == -1) {
            $query->set('mcfdd', '');
        }
    }
}

add_action('pre_get_posts','media_content_filter');

此时我卡住了，不知道该怎么办。有人请帮忙！

Answer 1

在媒体库和过滤器上显示分类过滤器的工作解决方案：

//[[START] - Add custom taxonomy dropdown to media library
function media_add_content_category_filter_dropdown() 
{
   global $wp_query;

   // check we're in the right place, otherwise return
   if ( 'upload.php' != $pagenow )
     return;

   $tax_slug = 'media_content_category';
   $tax_obj = get_taxonomy( $tax_slug );

  // check if anything has been selected, else set selected to null
  $selected = isset($wp_query->query[$tax_slug]) ? $wp_query->query[$tax_slug] : null;

   wp_dropdown_categories( array(
     'show_option_all'   => __($tax_obj->label . ' - All'),
     'taxonomy'          => $tax_slug,
     'name'              => $tax_obj->name,
     'orderby'           => 'name',
     'selected'          => $selected,
     'hierarchical'      => true,
     // 'show_count'        => true,
     'hide_empty'        => false
  ) );

}
add_action('restrict_manage_posts', 'media_add_content_category_filter_dropdown');

按自定义分类过滤帖子

function media_tsm_post_convert_id_to_term_in_query($query) 
{
   global $pagenow, $typenow;

// check we're in the right place, otherwise return
if ( 'upload.php' != $pagenow )
    return;

$filters = get_object_taxonomies( $typenow );

foreach ( $filters as $tax_slug ) {
    $var = &$query->query_vars[$tax_slug];
    if ( $var != 0 )  {
        $term = get_term_by( 'id', $var, $tax_slug );
        $var = $term->slug;
    }
  }
}
add_filter('parse_query', 'media_tsm_post_convert_id_to_term_in_query');
//[END] - Add custom taxonomy dropdown to media library

无法在媒体列表视图中获取自定义分类过滤器

1 个答案: