module HasDoseVolume

# File app/models/concerns/has_dose_volume.rb, line 10
def dose_volume_ml
  return nil if vaccine.nil? || full_dose.nil?

  if full_dose?
    vaccine.dose_volume_ml
  elsif half_dose?
    vaccine.dose_volume_ml * 0.5
  end
end

# File app/models/concerns/has_dose_volume.rb, line 6
def full_dose? = full_dose == true

def half_dose? = full_dose == false

def dose_volume_ml
  return nil if vaccine.nil? || full_dose.nil?

  if full_dose?
    vaccine.dose_volume_ml
  elsif half_dose?
    vaccine.dose_volume_ml * 0.5
  end
end

# File app/models/concerns/has_dose_volume.rb, line 8
  def half_dose? = full_dose == false

  def dose_volume_ml
    return nil if vaccine.nil? || full_dose.nil?

    if full_dose?
      vaccine.dose_volume_ml
    elsif half_dose?
      vaccine.dose_volume_ml * 0.5
    end
  end
end