Woocommerce sort columns by Event Time - php

Question

I'm working with Wordpress, Woocommerce & Eventon plugin in order to create a selling tickets for events site. Users can order tickets for different dates.
I'm trying to implement a sortable column wich shows for every ticket sold the date for the event (stored in woocommerce_order_itemmeta table as meta_value of meta_key 'Event-Time'). So first of all I created and populated that column like this:
add_filter( 'manage_edit-shop_order_columns', 'wooc_set_custom_column_order_columns');
//create custom woocommerce columns
function wooc_set_custom_column_order_columns($columns) {#
$nieuwearray = array();
foreach($columns as $key => $title) {
if ($key=='billing_address') { // in front of the Billing column
$nieuwearray['order_product'] = __( 'Products', 'woocommerce' );
$nieuwearray['Event-Time'] = __( 'Reservation Date', 'woocommerce' );
}
$nieuwearray[$key] = $title;
}
return $nieuwearray ;
}
//populate custom woocommerce columns
add_action( 'manage_shop_order_posts_custom_column' , 'custom_shop_order_column', 10, 2 );
function custom_shop_order_column( $column ) {
global $post, $woocommerce, $the_order;
switch ( $column ) {
case 'order_product' :
$terms = $the_order->get_items();
if ( is_array( $terms ) ) {
foreach($terms as $term)
{
echo $term['item_meta']['_qty'][0] .' x ' . $term['name'] .'<br />';
}
} else {
_e( 'Unable get the product', 'woocommerce' );
}
break;
case 'Event-Time' :
$terms = $the_order->get_items();
if ( is_array( $terms ) ) {
foreach($terms as $term) {
if(array_key_exists( 'Event-Time', $term ) ){
$date_event = substr($term['item_meta']['Event-Time'][0], 0, 10);
echo $date_event . '<br />';
} else {
echo '<b>' . __('No existe fecha reserva?', 'woocommerce') . '</b>';
}
}
} else {
_e( 'Unable get the product', 'woocommerce' );
}
break;
}
}
In order to make Event-Time column sortable, I added this code:
add_filter( "manage_edit-shop_order_sortable_columns", 'sort_columns_woocommerce' );
function sort_columns_woocommerce( $columns ) {
$custom = array(
//'order_producten' => 'MY_COLUMN_1_POST_META_ID',
'Event-Time' => 'Event-Time'
);
return wp_parse_args( $custom, $columns );
}
but nothing happened, so after a few hours looking it up on Google, I found similar solution that I tried to adapt to my case:
function order_by_event_time_join($query) {
global $wpdb;
if ( is_admin() && (isset($_GET['post_type']) && $_GET['post_type'] === 'shop_order') && (isset($_GET['orderby']) && $_GET['orderby'] === 'Event-Time') ) {
$first_item_in_order = "SELECT order_item_id FROM {$wpdb->prefix}woocommerce_order_items WHERE order_id = $wpdb->posts.ID AND order_item_type = 'line_item' LIMIT 0, 1";
$query .= "LEFT JOIN {$wpdb->prefix}woocommerce_order_items AS items ON $wpdb->posts.ID = items.order_id AND items.order_item_id = ($first_item_in_order) ";
$query .= "LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS itemmeta ON items.order_item_id = itemmeta.order_item_id AND (itemmeta.meta_key = 'Event-Time') ";
}
return $query;
}
add_filter('posts_join', 'order_by_event_time_join');
function order_by_event_time_where($where) {
global $wpdb;
if( is_admin() && $_GET['post_type'] === 'shop_order' && (isset($_GET['orderby']) && $_GET['orderby'] === 'Event-Time') ) {
if(strpos($where, 'shop_webhook')) {
return " AND $wpdb->posts.post_type = 'shop_order' AND itemmeta.meta_key = 'Event-Time'";
}
}
return $where;
}
add_filter('posts_where', 'order_by_event_time_where');
But no luck... What I understand the problem is I'm not able to sort columns by the meta_value 'Event-Time' in the ticket-orders section of woocommerce...
I can show Event-Time data but impossible to sort/filter it.