Sha256: 7a860282df363ea816c4bbb839868812128362d4247b2ce8e7127d8677201e68
Contents?: true
Size: 1.31 KB
Versions: 49
Compression:
Stored size: 1.31 KB
Contents
class Species < ActiveRecord::Base
set_primary_key :name
has_many :pets
scope :thoroughly_researched, :conditions => 'marginal_dietary_requirement IS NOT NULL'
falls_back_on :diet_emission_intensity => lambda { weighted_average :diet_emission_intensity, :weighted_by => :population }, # kg CO2 / joule
:marginal_dietary_requirement => lambda { (thoroughly_researched.map(&:weighted_diet_size).sum / thoroughly_researched.sum(:population) ) / thoroughly_researched.weighted_average(:weight, :weighted_by => :population)}, # joules
:fixed_dietary_requirement => 0, # force a zero intercept to be respectful of our tiny tiny animal friends
:weight => lambda { weighted_average :weight, :weighted_by => :population } # kg
data_miner do
tap "Brighter Planet's species data", Earth.taps_server
end
class << self
def [](name)
find_by_name name.to_s
end
end
def diet_size
return unless weight and marginal_dietary_requirement and fixed_dietary_requirement
weight * marginal_dietary_requirement + fixed_dietary_requirement
end
def weighted_diet_size
return unless _diet_size = diet_size and _population = population
_diet_size * _population
end
def to_s
name
end
def cat?
eql? self.class[:cat]
end
end
Version data entries
49 entries across 49 versions & 2 rubygems