Module: RailsTrade::PromoteCharge::FinalPromoteCharge

Extended by:: ActiveSupport::Concern

Included in:: FinalPromoteCharge

Defined in:: app/models/rails_trade/promote_charge/final_promote_charge.rb

Overview

一口价

Instance Method Summary collapse

#final_price(amount) ⇒ Object

返回原价与一口价之间的差，负数。.

Instance Method Details

#final_price(amount) ⇒ `Object`

返回原价与一口价之间的差，负数。



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# File 'app/models/rails_trade/promote_charge/final_promote_charge.rb', line 8

def final_price(amount)
  -(amount - parameter)
end