php 功能 - 管理媒体库 - 添加可排序的大小列

Posted 2021-05-04

<?php 

// For Step 1, I created a function that should only be run once. It’s a simple custom query that iterates through all attachments that don’t have filesize meta set yet. It’s commented out in my Gist because it can cause issues on your site if you have a large Media Library. Use it cautiously and use it once.


// Run only once, and then remove! - Adds initial meta to each attachment
function add_initial_file_size_postmeta($column_name, $post_id) {
  static $query_ran;
  if($query_ran !== null) {
    $all_imgs = new WP_Query(array(
      'post_type'      => 'attachment',
      'post_status'    => 'inherit',
      'posts_per_page' => -1,
      'fields'         => 'ids'
    ));
    $all_imgs_array = $all_imgs->posts;
    foreach($all_imgs_array as $a) {
      if(!get_post_meta($a, 'filesize', true)) {
        $file = get_attached_file($a);
        update_post_meta($a, 'filesize', filesize($file));
      }
    }
    $query_ran = true;
  }
}
add_action('manage_media_custom_column', __NAMESPACE__.'\\add_initial_file_size_postmeta');

?>

<?php

/*****************************************
Add sortable size column in Media Library
******************************************/
// Ensure file size meta gets added to new uploads
function add_filesize_metadata_to_images($meta_id, $post_id, $meta_key, $meta_value) {
  if('_wp_attachment_metadata' == $meta_key) {
    $file = get_attached_file($post_id);
    update_post_meta($post_id, 'filesize', filesize($file));
  }
}
add_action('added_post_meta', 'add_filesize_metadata_to_images', 10, 4);

// Add the column
function add_column_file_size($posts_columns) {
  $posts_columns['filesize'] = __('File Size');
  return $posts_columns;
}
add_filter('manage_media_columns', 'add_column_file_size');

// Populate the column
function add_column_value_file_size($column_name, $post_id) {
  if('filesize' == $column_name) {
    if(!get_post_meta($post_id, 'filesize', true)) {
      $file      = get_attached_file($post_id);
      $file_size = filesize($file);
      update_post_meta($post_id, 'filesize', $file_size);
    } else {
      $file_size = get_post_meta($post_id, 'filesize', true);
    }
    echo size_format($file_size, 2);
  }
  return false;
}
add_action('manage_media_custom_column', 'add_column_value_file_size', 10, 2);

// Make column sortable
function add_column_sortable_file_size($columns) {
  $columns['filesize'] = 'filesize';
  return $columns;
}
add_filter('manage_upload_sortable_columns', 'add_column_sortable_file_size');

// Column sorting logic (query modification)
function sortable_file_size_sorting_logic($query) {
  global $pagenow;
  if(is_admin() && 'upload.php' == $pagenow && $query->is_main_query() && !empty($_REQUEST['orderby']) && 'filesize' == $_REQUEST['orderby']) {
    $query->set('order', 'ASC');
    $query->set('orderby', 'meta_value_num');
    $query->set('meta_key', 'filesize');
    if('desc' == $_REQUEST['order']) {
      $query->set('order', 'DSC');
    }
  }
}
add_action('pre_get_posts', 'sortable_file_size_sorting_logic');

?>