Magento 2: How to get special price from the order?

Question

Question: I need to know if a product is bought with special price or not.

More Background: We are using three prices for our products, which are original price, special price and tier price. We have integrated Magento with another system, called Linx. This system needs to know if the price is a special price, or not.

When I look at the sales_order_item table, I can list the following fields related with the price:

• price
• base_price
• original_price
• base_original_price
• price_incl_tax
• base_price_incl_tax
• discount_percent
• discount_amount

Paraphrased Question: How can I say that one of these fields hold special price for sure?

Answer 1

add below dependency

protected $orderRepository;

public function __construct(
    ...
    \Magento\Sales\Api\OrderRepositoryInterface $orderRepository,
    ....
) {
    ....
    $this->orderRepository = $orderRepository;
    ....
}

use below code in function where you want to get price

$order = $this->orderRepository->get($orderId);
foreach ($order->getAllItems() as $item) {
 $price = $item->getPrice(); //discount price
}