class Role < ActiveRecord::Base
  has_many :user_roles, :dependent => :destroy

  validates_presence_of :name
  validates_presence_of :code
  validates_presence_of :about

  validates_length_of :name, :within => 1..128
  validates_length_of :code, :within => 1..128
  validates_length_of :about, :within => 1..128

  validates_uniqueness_of :name
  validates_uniqueness_of :code
end