WC_Cart_Totals::calculate_discounts() │ protected │ WC 3.2.0

Calculate COUPON based discounts which change item prices.

Метод класса: WC_Cart_Totals{}

Хуков нет.

Возвращает

null. Ничего (null).

Использование

// protected - в коде основоного (родительского) или дочернего класса
$result = $this->calculate_discounts();

Список изменений

Код WC_Cart_Totals::calculate_discounts() WC Cart Totals::calculate discounts ^{WC 8.7.0}

protected function calculate_discounts() {
	$this->get_coupons_from_cart();

	$discounts = new WC_Discounts( $this->cart );

	// Set items directly so the discounts class can see any tax adjustments made thus far using subtotals.
	$discounts->set_items( $this->items );

	foreach ( $this->coupons as $coupon ) {
		$discounts->apply_coupon( $coupon );
	}

	$coupon_discount_amounts     = $discounts->get_discounts_by_coupon( true );
	$coupon_discount_tax_amounts = array();

	// See how much tax was 'discounted' per item and per coupon.
	if ( $this->calculate_tax ) {
		foreach ( $discounts->get_discounts( true ) as $coupon_code => $coupon_discounts ) {
			$coupon_discount_tax_amounts[ $coupon_code ] = 0;

			foreach ( $coupon_discounts as $item_key => $coupon_discount ) {
				$item = $this->items[ $item_key ];

				if ( $item->product->is_taxable() ) {
					// Item subtotals were sent, so set 3rd param.
					$item_tax = array_sum( WC_Tax::calc_tax( $coupon_discount, $item->tax_rates, $item->price_includes_tax ) );

					// Sum total tax.
					$coupon_discount_tax_amounts[ $coupon_code ] += $item_tax;

					// Remove tax from discount total.
					if ( $item->price_includes_tax ) {
						$coupon_discount_amounts[ $coupon_code ] -= $item_tax;
					}
				}
			}
		}
	}

	$this->coupon_discount_totals     = (array) $discounts->get_discounts_by_item( true );
	$this->coupon_discount_tax_totals = $coupon_discount_tax_amounts;

	if ( wc_prices_include_tax() ) {
		$this->set_total( 'discounts_total', array_sum( $this->coupon_discount_totals ) - array_sum( $this->coupon_discount_tax_totals ) );
		$this->set_total( 'discounts_tax_total', array_sum( $this->coupon_discount_tax_totals ) );
	} else {
		$this->set_total( 'discounts_total', array_sum( $this->coupon_discount_totals ) );
		$this->set_total( 'discounts_tax_total', array_sum( $this->coupon_discount_tax_totals ) );
	}

	$this->cart->set_coupon_discount_totals( wc_remove_number_precision_deep( $coupon_discount_amounts ) );
	$this->cart->set_coupon_discount_tax_totals( wc_remove_number_precision_deep( $coupon_discount_tax_amounts ) );

	// Add totals to cart object. Note: Discount total for cart is excl tax.
	$this->cart->set_discount_total( $this->get_total( 'discounts_total' ) );
	$this->cart->set_discount_tax( $this->get_total( 'discounts_tax_total' ) );
}