grooves

# coding: utf-8
class Concern < ActiveRecord::Base
  belongs_to :publication
end

grooves

# coding: utf-8
class Activity < ActiveRecord::Base
  belongs_to :target,  polymorphic: true

  def message
    # return something
  end
end

grooves

# coding: utf-8
class CompanyUser < ActiveRecord::Base
  attr_accessible :user_id, :company_id, :position
  attr_accessible :user_id, :company_id, :position, :is_admin, as: :admin
end