*.rb

class Post < BaseCouchRestModel
end

class Person < BaseCouchRestModel
end

class Tag < BaseCouchRestModel
end

base_couch_rest_model.rb

class BaseCouchRestModel < CouchRest::ExtendedDocument
  # Include the validation module to get access to the validation methods
  include CouchRest::Validation 
  
  def self.get(id)
    begin
      super
    rescue RestClient::ResourceNotFound
      nil
    end
  end
end