How Do I Access and Manipulate WooCommerce 3 Order Items and Their Data?

Accessing WC_Order Items and WC_Order_Item_Product in WooCommerce 3

WooCommerce 3 has introduced changes to the way order items are accessed and manipulated. This includes the deprecation of the WC_Order_Item_Product construct, requiring alternative methods for retrieving item data.

Getting Order Item Properties

Previously, the get_id() method was used to obtain the order item ID. In WooCommerce 3, the following methods should be used to retrieve specific item properties:

• Product ID: get_product_id()
• Variation ID: get_variation_id()
• Order ID: get_order_id()

Getting WC_Product and WC_Order Objects

To access the WC_Product and WC_Order objects associated with an order item, use the following methods:

• WC_Product: get_product()
• WC_Order: get_order()

Accessing Data and Meta Data

The get_data() and get_meta_data() methods can be used to obtain the item's common data and meta data, respectively. To access specific meta data by key, use the get_meta() method.

Example:

$order_item_id = 15;
$item = new WC_Order_Item_Product($order_item_id);

// Get product ID
$product_id = $item->get_product_id();

// Access common data as an array
$item_data = $item->get_data();

// Access meta data as an array
$item_meta = $item->get_meta_data();

Alternative Access:

WooCommerce still allows direct array access for backwards compatibility with legacy systems:

$product_id = $item['product_id'];
$variation_id = $item['variation_id'];

Additional Notes:

• The WC_Order_Item_Product class no longer has a constructor.
• get_total() and get_total_tax() methods retrieve line item totals that consider discounts when a coupon is applied.
• get_formatted_meta_data() can be used to retrieve meta data in an unprotected, formatted array.
• For more information, refer to the WooCommerce documentation and the example code provided.

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