add custom columns to order list view

backend/app/plugins/wiaas/includes/admin/class-wiaas-admin-orders.php

@@ -0,0 +1,51 @@
+<?php
+
+class Wiaas_Admin_Orders {
+
+    public static function init() {
+
+        add_filter( 'manage_edit-shop_order_columns', array(__CLASS__, 'add_additional_columns_to_orders_screen') );
+
+        add_action( 'manage_shop_order_posts_custom_column', array(__CLASS__, 'add_custom_columns_content') );
+    }
+
+    public static function add_additional_columns_to_orders_screen( $columns ){
+
+        $new_columns = array();
+
+        $new_columns['reference'] = 'Location';
+        $new_columns['commercial_lead'] = 'Commercial lead';
+        $new_columns['customer'] = 'Customer';
+
+        $insertAfterColumn = 1;
+
+        return array_merge(array_slice($columns,0,$insertAfterColumn+1), $new_columns, array_slice($columns,$insertAfterColumn+1));
+
+    }
+
+    public static function add_custom_columns_content( $column ){
+
+        global $post;
+        $column_content = '';
+
+        switch ($column){
+            case 'reference':
+                $column_content = Wiaas_Order::get_order_reference($post->ID);
+                break;
+
+            case 'commercial_lead':
+                $column_content = Wiaas_Order::get_order_commercial_lead_name($post->ID);
+                break;
+
+            case 'customer':
+                $column_content = Wiaas_Order::get_order_customer_full_name($post->ID);
+                break;
+        }
+
+        echo $column_content;
+    }
+
+
+}
+
+Wiaas_Admin_Orders::init();