protected function get_coupons_from_cart() {
		$this->coupons = $this->cart->get_coupons();

		foreach ( $this->coupons as $coupon ) {
			switch ( $coupon->get_discount_type() ) {
				case 'fixed_product':
					$coupon->sort = 1;
					break;
				case 'percent':
					$coupon->sort = 2;
					break;
				case 'fixed_cart':
					$coupon->sort = 3;
					break;
				default:
					$coupon->sort = 0;
					break;
			}

			// Allow plugins to override the default order.
			$coupon->sort = apply_filters( 'woocommerce_coupon_sort', $coupon->sort, $coupon );
		}

		uasort( $this->coupons, array( $this, 'sort_coupons_callback' ) );
	}