OrderItemPriceCalculationStrategy

OrderItemPriceCalculationStrategy

The OrderItemPriceCalculationStrategy defines the price of an OrderItem. By default the DefaultOrderItemPriceCalculationStrategy is used.

When is the strategy invoked ?

• addItemToOrder (only on the new order line)
• adjustOrderLine (only on the adjusted order line)
• setOrderShippingAddress (on all order lines)
• setOrderBillingAddress (on all order lines)

OrderItemPriceCalculationStrategy vs Promotions

Both the OrderItemPriceCalculationStrategy and Promotions can be used to alter the price paid for a product.

Use OrderItemPriceCalculationStrategy if:

• The price is not dependent on quantity or on the other contents of the Order.
• The price calculation is based on the properties of the ProductVariant and any CustomFields specified on the OrderLine, for example via a product configurator.
• The logic is a permanent part of your business requirements.

Use Promotions if:

• You want to implement “discounts” and “special offers”
• The calculation is not a permanent part of your business requirements.
• The price depends on dynamic aspects such as quantities and which other ProductVariants are in the Order.
• The configuration of the logic needs to be manipulated via the Admin UI.

Example use-cases

A custom OrderItemPriceCalculationStrategy can be used to implement things like:

• A gift-wrapping service, where a boolean custom field is defined on the OrderLine. If true, a gift-wrapping surcharge would be added to the price.
• A product-configurator where e.g. various finishes, colors, and materials can be selected and stored as OrderLine custom fields (see Customizing models.

Signature

interface OrderItemPriceCalculationStrategy extends InjectableStrategy {
  calculateUnitPrice(
        ctx: RequestContext,
        productVariant: ProductVariant,
        orderLineCustomFields: { [key: string]: any },
        order: Order,
    ): PriceCalculationResult | Promise<PriceCalculationResult>;
}

Extends

• InjectableStrategy

Members

calculateUnitPrice