How to Access Order Item Data in WooCommerce 3?

Access Order Items and WC_Order_Item_Product in WooCommerce 3

One notable change in WooCommerce 3 is the inability to directly access properties from order items. The following code, which previously worked, now results in an error:

$order_item_id = 15;
$order_item = new WC_Order_Item_Product($order_item_id);
$return = $order_item->get_id() ? $order_item : false;

Understanding the New Mechanisms

In WooCommerce 3, the WC_Order_Item_Product class does not have a constructor, and its properties can be accessed through dedicated methods. The following are the key methods for retrieving specific data:

Retrieving Specific Data

• Product ID: get_product_id()
• Variation ID: get_variation_id()
• Order ID: get_order_id()
• WC_Product Object: get_product()
• WC_Order Object: get_order()
• Item ID: get_id()
• Product Name: get_name()
• Product SKU: get_product()->get_sku()

Retrieving Totals

• Subtotal (non-discounted): get_subtotal()
• Subtotal Tax (non-discounted): get_subtotal_tax()
• Total (discounted): get_total()
• Total Tax (discounted): get_total_tax()

Retrieving Order Items

To retrieve order items from a WC_Order object and access their data (using the WC_Product Object), use the following code:

$order_id = 156; // The order_id
$order = wc_get_order( $order_id );

foreach( $order->get_items() as $item_id => $item ){

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

    // Variation ID
    $variation_id = $item->get_variation_id();

    // WC_Product Object
    $product = $item->get_product();

    // Product Name
    $product_name = $item->get_name();
}

Accessing Data and Custom Metadata

Unprotecting Data and Metadata:

$formatted_meta_data = $item->get_formatted_meta_data( ' ', true );
$meta_value = $item->get_meta( 'custom_meta_key', true );

Array Access:

$product_id    = $item['product_id']; // Get the product ID
$variation_id  = $item['variation_id']; // Get the variation ID

Refer to the linked resources below for further insights:

• [Get the metadata of an order item in woocommerce 3](https://stackoverflow.com/questions/54304498/get-the-metadata-of-an-order-item-in-woocommerce-3)
• [How to get WooCommerce order details](https://stackoverflow.com/questions/32144098/how-to-get-woocommerce-order-details)

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