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https://github.com/openfoodfoundation/openfoodnetwork
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918425fd93
We're now handling these values on the frontend, so can keep this simple. fixes up: Add numericality validation for * Add translation for Active Record error message
29 lines
950 B
Ruby
29 lines
950 B
Ruby
# frozen_string_literal: true
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class Calculator::FlatPercentPerItem < Spree::Calculator
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# Spree's FlatPercentItemTotal calculator sums all amounts, and then calculates a percentage
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# on them.
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# In the cart, we display line item individual amounts rounded, so to have consistent
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# calculations we do the same internally. Here, we round adjustments at the individual
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# item level first, then multiply by the item quantity.
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preference :flat_percent, :decimal, default: 0
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validates :preferred_flat_percent,
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numericality: true
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def self.description
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I18n.t(:flat_percent_per_item)
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end
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def compute(object)
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line_items_for(object).to_a.sum do |li|
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unless li.price.present? && li.quantity.present?
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raise ArgumentError, "object must respond to #price and #quantity"
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end
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value = (li.price * BigDecimal(preferred_flat_percent.to_s) / 100.0).round(2)
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value * li.quantity
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end
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end
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end
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