Module: HasPublicId::ActiveRecord::Mixin::ClassMethods

Defined in:
lib/has_public_id/activerecord/mixin.rb

Instance Method Summary collapse

Instance Method Details

#has_public_id(attribute_name, *args) ⇒ Object 



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# File 'lib/has_public_id/activerecord/mixin.rb', line 22

def has_public_id(attribute_name, *args)
  return if respond_to?(:public_id_attribute)
  options = args.extract_options!

  class_attribute :public_id_attr, :public_id_options

  class << self

    def initialize_public_ids!
      self.where(self.public_id_attr => nil).find_each do |obj|
        obj.update_attribute(self.public_id_attr, self.new_public_id)
      end
    end

    def find_by_public_id(public_id)
      where(self.public_id_attr => public_id).first
    end

    def find_by_public_id!(public_id)
      if public_id.blank?
        raise ::ActiveRecord::RecordNotFound.new("Couldn't find #{self.name} without an ID")
      end
      where(self.public_id_attr => public_id).first or
        raise ::ActiveRecord::RecordNotFound.new("Couldn't find #{self.name} with #{public_id}")
    end

    def new_public_id
      new_id = ::HasPublicId::Util.new_public_id(self, self.public_id_options)
      while(self.public_id_options[:check_unique])
        break unless where(self.public_id_attr => new_id).exists?
        new_id = ::HasPublicId::Util.new_public_id(self, self.public_id_options)
      end
      return new_id
    end
  end
  self.public_id_attr     = attribute_name
  self.public_id_options  = options
  include ::HasPublicId::ActiveRecord::InstanceMethods
  after_initialize :initialize_public_id
end