WC_Abstract_Order::set_coupon_discount_amounts( WC_Discounts $discounts )

After applying coupons via the WC_Discounts class, update or create coupon items.

Contents

Description Description

Parameters Parameters

$discounts

(Required) Discounts class.

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Source Source

File: includes/abstracts/abstract-wc-order.php

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protected function set_coupon_discount_amounts( $discounts ) {
    $coupons           = $this->get_items( 'coupon' );
    $coupon_code_to_id = wc_list_pluck( $coupons, 'get_id', 'get_code' );
    $all_discounts     = $discounts->get_discounts();
    $coupon_discounts  = $discounts->get_discounts_by_coupon();
 
    if ( $coupon_discounts ) {
        foreach ( $coupon_discounts as $coupon_code => $amount ) {
            $item_id = isset( $coupon_code_to_id[ $coupon_code ] ) ? $coupon_code_to_id[ $coupon_code ] : 0;
 
            if ( ! $item_id ) {
                $coupon_item = new WC_Order_Item_Coupon();
                $coupon_item->set_code( $coupon_code );
            } else {
                $coupon_item = $this->get_item( $item_id, false );
            }
 
            $discount_tax = 0;
 
            // Work out how much tax has been removed as a result of the discount from this coupon.
            foreach ( $all_discounts[ $coupon_code ] as $item_id => $item_discount_amount ) {
                $item = $this->get_item( $item_id, false );
 
                if ( 'taxable' !== $item->get_tax_status() || ! wc_tax_enabled() ) {
                    continue;
                }
 
                $taxes = array_sum( WC_Tax::calc_tax( $item_discount_amount, WC_Tax::get_rates( $item->get_tax_class() ), $this->get_prices_include_tax() ) );
                if ( 'yes' !== get_option( 'woocommerce_tax_round_at_subtotal' ) ) {
                    $taxes = wc_round_tax_total( $taxes );
                }
 
                $discount_tax += $taxes;
 
                if ( $this->get_prices_include_tax() ) {
                    $amount = $amount - $taxes;
                }
            }
 
            $coupon_item->set_discount( $amount );
            $coupon_item->set_discount_tax( $discount_tax );
 
            $this->add_item( $coupon_item );
        }
    }
}

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Changelog
Version Description
3.2.0 Introduced.

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Uses Uses

Uses
Uses Description
includes/abstracts/abstract-wc-order.php: WC_Abstract_Order::get_tax_rates()

Get tax rates for an order. Use order’s shipping or billing address, defaults to base location.
includes/wc-formatting-functions.php: wc_round_tax_total()

Round a tax amount.
includes/wc-conditional-functions.php: wc_tax_enabled()

Are store-wide taxes enabled?
includes/class-wc-tax.php: WC_Tax::calc_tax()

Calculate tax for a line.
includes/abstracts/abstract-wc-order.php: WC_Abstract_Order::get_tax_location()

Get tax location for this order.
includes/abstracts/abstract-wc-order.php: WC_Abstract_Order::add_item()

Adds an order item to this order. The order item will not persist until save.
includes/abstracts/abstract-wc-order.php: WC_Abstract_Order::get_item()

Get an order item object, based on its type.
includes/abstracts/abstract-wc-order.php: WC_Abstract_Order::get_items()

Return an array of items/products within this order.
includes/abstracts/abstract-wc-order.php: WC_Abstract_Order::get_prices_include_tax()

Get prices_include_tax.
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