Module: BrighterPlanet::AutomobileTrip::CarbonModel

Defined in:
lib/automobile_trip/carbon_model.rb

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/automobile_trip/carbon_model.rb', line 9

def self.included(base)
  base.decide :emission, :with => :characteristics do
    committee :emission do # returns kg CO2e
      quorum 'from fuel use and emission factor', :needs => [:fuel_use, :emission_factor] do |characteristics|
        characteristics[:fuel_use] * characteristics[:emission_factor]
      end
      
      quorum 'default' do
        raise "The emission committee's default quorum should never be called"
      end
    end
    
    committee :emission_factor do # returns lbs CO2e / l
      quorum 'from fuel type', :needs => :fuel_type do |characteristics|
        characteristics[:fuel_type].emission_factor
      end
      
      quorum 'default' do
        base.fallback.emission_factor
      end
    end
    
    committee :fuel_use do # returns l
      quorum 'default' do
        base.fallback.fuel_use
      end
    end
  end
end