Class: Spree::Calculator::FlexiRate

Inherits:
Spree::Calculator show all
Defined in:
app/models/spree/calculator/flexi_rate.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Spree::Calculator

#available?, calculators, #description, register, #to_s

Class Method Details

.available?(object) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/spree/calculator/flexi_rate.rb', line 16

def self.available?(object)
  true
end

.description ⇒ Object 



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# File 'app/models/spree/calculator/flexi_rate.rb', line 12

def self.description
  I18n.t(:flexible_rate)
end

Instance Method Details

#compute(object) ⇒ Object 



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# File 'app/models/spree/calculator/flexi_rate.rb', line 20

def compute(object)
  sum = 0
  max = self.preferred_max_items.to_i
  items_count = object.line_items.map(&:quantity).sum
  items_count.times do |i|
    # check max value to avoid divide by 0 errors
    if (max == 0 && i == 0) || (max > 0) && (i % max == 0)
      sum += self.preferred_first_item.to_f
    else
      sum += self.preferred_additional_item.to_f
    end
  end

  sum
end