readme.md

TL;DR: I want to be able to do this:

features = Product.features

So it returns:

[id: 1, name: 'Colour', value: 'Blue']
[id: 2, name: 'Size', value: 'M']
[id: 3, name: 'Shape', value: 'Round']

feature.rb

class Feature < ActiveRecord::Base
  has_many :product_features
  has_many :products, :through => :product_features

  attr_accessible :name
end

product.rb

class Product < ActiveRecord::Base
  belongs_to :company

  has_many :product_features
  has_many :features, :through => :product_features

  attr_accessible :description, :name, :company

  validates :company, :presence => true
end

product_feature.rb

class ProductFeature < ActiveRecord::Base
  belongs_to :product
  belongs_to :feature

  attr_accessible :value
end