Class: Helper::EnergyBandCalculator

Inherits:
Object
  • Object
show all
Defined in:
lib/helper/energy_band_calculator.rb

Class Method Summary collapse

Class Method Details

.commercial(number) ⇒ Object 



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# File 'lib/helper/energy_band_calculator.rb', line 26

def self.commercial(number)
  if number.nil?
    return nil
  end

  case number
  when proc { |n| n <= -1 }
    "a+"
  when 0..25
    "a"
  when 26..50
    "b"
  when 51..75
    "c"
  when 76..100
    "d"
  when 101..125
    "e"
  when 126..150
    "f"
  else
    "g"
  end
end

.domestic(number) ⇒ Object 



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# File 'lib/helper/energy_band_calculator.rb', line 3

def self.domestic(number)
  if number.nil?
    return nil
  end

  case number
  when proc { |n| n <= 20 }
    "g"
  when 21..38
    "f"
  when 39..54
    "e"
  when 55..68
    "d"
  when 69..80
    "c"
  when 81..91
    "b"
  else
    "a"
  end
end