The price module offers a Price Type with useful methods.
Price calculation is not a trivial topic and multiple solutions exist. The implementation details of the price object is:
- internally we use big.Float to hold the amount, this is to be able to calculate exactly
- however a float like representation of an amount cannot be payed, that is why the price has a method "GetPayablePrice" that returns a Price that can be payed in the given currency, using correct rounding and amount representation
// get 2.45 EUR Price price := NewFromInt(245,100,"EUR") rowPrice := price.Multiply(10) // 10% discount discountedRowPrice := rowPrice.Discounted(10.0) // What needs to be payed: priceToPay := discountedRowPrice.GetPayable() // what needs to be payed by item() singleItemsPrices := discountedRowPrice.SplitInPayables(10) // you can also set price from float: price2 := NewFromFloat(2.45,"EUR")
Be aware that
price.Equals(price2) may be false but due to float arithmetic but
price.GetPayable().Equals(price2.GetPayable()) will be true
Represents a price together with a type. Can be used in places where you need to give the price value a certain extra semantic information.
Template Func - Formatting a Price Object¶
Just use the template function commercePriceFormat like this:
The template functions used the configurations of the Flamingo "locale" package. For more details on the configuration options please read there.