[WooCommerce 3.0+] Re-instate the "Purchased items" column on orders page

wc-custom-purchased-column.php

add_filter('manage_edit-shop_order_columns', 'wc_custom_purchased_column');

function wc_custom_purchased_column($columns)
{
    $new_array = array();
    foreach ($columns as $key => $title) {
        if ($key == 'billing_address') {

            $new_array['order_items'] = __('Purchased', 'woocommerce');
        }

        $new_array[$key] = $title;
    }
    return $new_array;
}

add_action('manage_shop_order_posts_custom_column', 'wc_shop_custom_column', 10, 2);

function wc_shop_custom_column($column)
{
    global $post, $woocommerce, $the_order;
    switch ($column) {

        case 'order_items':
            $terms = $the_order->get_items();

			echo '<a href="#" class="show_order_items">' . apply_filters( 'woocommerce_admin_order_item_count', sprintf( _n( '%d item', '%d items', $the_order->get_item_count(), 'woocommerce' ), $the_order->get_item_count() ), $the_order ) . '</a>';

				if ( sizeof( $the_order->get_items() ) > 0 ) {

					echo '<table class="order_items" cellspacing="0">';

					foreach ( $the_order->get_items() as $item ) {
						$product        = apply_filters( 'woocommerce_order_item_product', $item->get_product(), $item );
						$item_meta = (WC()->version < '3.1.0') ? new WC_Order_Item_Meta($item) : new WC_Order_Item_Product; 
                        			$item_meta_html = (WC()->version < '3.1.0') ? $item_meta->display(true, true) : $item_meta->get_product();
						//$item_meta      = new WC_Order_Item_Meta( $item, $product );
						//$item_meta_html = $item_meta->display( true, true );
						?>
						<tr class="<?php echo apply_filters( 'woocommerce_admin_order_item_class', '', $item, $the_order ); ?>">
							<td class="qty"><?php echo esc_html( $item->get_quantity() ); ?></td>
							<td class="name">
								<?php  if ( $product ) : ?>
									<?php echo ( wc_product_sku_enabled() && $product->get_sku() ) ? $product->get_sku() . ' - ' : ''; ?><a href="<?php echo get_edit_post_link( $product->get_id() ); ?>"><?php echo apply_filters( 'woocommerce_order_item_name', $item->get_name(), $item, false ); ?></a>
								<?php else : ?>
									<?php echo apply_filters( 'woocommerce_order_item_name', $item->get_name(), $item, false ); ?>
								<?php endif; ?>
								<?php if ( ! empty( $item_meta_html ) ) : ?>
									<?php echo wc_help_tip( $item_meta_html ); ?>
								<?php endif; ?>
							</td>
						</tr>
						<?php
					}

					echo '</table>';

				} else echo '&ndash;';
			break;

		}
}

This is downloadable as a plugin (free!) : https://wordpress.org/plugins/restore-purchased-items-column/

This is great, thanks!

I forked it & cleaned it up a bit:
https://gist.github.com/prikhi/5f497142ff68be3c13073bc641e85522

Thanks so much for making this a plugin! I was missing that functionality and you've made my day!

Is also good have order date column, can you add to your code?

@silenx — the order date column is still present in core, following the 3.0 update .. am I missing something?

Updated for WooCommerce 3.1

This code is no longer needed following the upcoming v3.3 release: https://woocommerce.wordpress.com/2017/11/16/wc-3-3-order-screen-changes-including-a-new-preview-function-ready-for-feedback/