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https://github.com/openfoodfoundation/openfoodnetwork
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See here https://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#require-dependency
29 lines
663 B
Ruby
29 lines
663 B
Ruby
# frozen_string_literal: false
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require 'spree/localized_number'
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module Calculator
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class PerItem < Spree::Calculator
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extend Spree::LocalizedNumber
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preference :amount, :decimal, default: 0
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preference :currency, :string, default: Spree::Config[:currency]
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localize_number :preferred_amount
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def self.description
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I18n.t(:flat_rate_per_item)
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end
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def compute(object = nil)
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return 0 if object.nil?
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number_of_line_items = line_items_for(object).reduce(0) do |sum, line_item|
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value_to_add = line_item.quantity
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sum + value_to_add
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end
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preferred_amount * number_of_line_items
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end
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end
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end
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