How to display a sortable column in the WordPress admin for a custom field that counts the number of post views?

Question

PHP

Good afternoon.
Implemented WordPress article views counter ( source )
/* displaying the number of views */

function getPostViews($postID){
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
        return "0";    }
    return $count.'';}

/* register view */

function setPostViews($postID) {
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        $count = 0;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
    }else{
        $count++;
        update_post_meta($postID, $count_key, $count);    }}

/* display the number of views in the admin */

add_filter('manage_pages_columns', 'posts_column_views');
add_action('manage_pages_custom_column', 'posts_custom_column_views',10,2);
add_filter('manage_posts_columns', 'posts_column_views');
add_action('manage_posts_custom_column', 'posts_custom_column_views',10,2);
function posts_column_views($defaults){
    $defaults['post_views'] = __('Показы');
    return $defaults;}
function posts_custom_column_views($column_name, $id){
    if($column_name === 'post_views'){
        echo getPostViews(get_the_ID());    }}

Everything is working.
/* add the ability to sort the column */ Source

add_filter('manage_edit-post_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-page_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-slides_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-hp_highlights_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-portfolio_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-staff_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-services_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-testimonials_sortable_columns', 'add_views_sortable_column');
add_filter('manage_edit-faqs_sortable_columns', 'add_views_sortable_column');
function add_views_sortable_column($sortable_columns){
  $sortable_columns['post_views'] = 'views_views';
  return $sortable_columns;}

It becomes possible to sort by the "Impressions" column, when clicked, the line looks like:
/wp-admin/edit.php?orderby=views_views&order=desc
But in fact, sorting occurs not by the "Impressions" field, but by the "Date" field.
/* change the query when sorting the column, showing WordPress that it needs to sort by custom fields whose values ​​are numbers */ (Method 1)

add_filter('pre_get_posts', 'add_column_views_request');
function add_column_views_request( $object ){
  if( $object->get('orderby') != 'views_views' )
    return;
  $object->set('meta_key', 'post_views');
  $object->set('orderby', 'meta_value_num');}

or (Method 2)

add_action( 'pre_get_posts', 'add_column_views_request', 1 );
function add_column_views_request( $query ) {
  if ( $query->is_main_query() && ( $orderby = $query->get( 'orderby' ) ) ) {
    switch( $orderby ) {
        case 'views_views':
            $query->set( 'meta_key', 'post_views' );
            $query->set( 'orderby', 'meta_value' );
        break;}}}

or (Method 3)

add_filter('request', 'add_column_views_request');
function add_column_views_request( $vars ) {
    if ( 'views_views' == $vars['orderby'] ){
    $vars['meta_key'] = 'post_views';
    $vars['orderby'] = 'meta_value_num';}
    return $vars;}

Sorting just doesn't work: "No records found."
Please tell me how to fix the code.
What could be the problem?
Thank you for your reply.

Answer 1

you store in 'post_views_count' field and sort by 'post_views'

#(Способ 1)
 $object->set('meta_key', 'post_views_count');
#(Способ 2)
 $query->set( 'meta_key', 'post_views_count' );
#(Способ 3)
 $vars['meta_key'] = 'post_views_count';