def get_rule_class_by_name(klass)
      klass = camelize(klass)
      Validation::Rule.const_get(klass)
    rescue NameError => e
      raise InvalidRule.new(e)
    end
def get_rule_class_by_name(klass)
      klass = camelize(klass)
      Validation::Rule.const_get(klass)
    rescue NameError => e
      raise InvalidRule.new(e)
    end
Resolves the specified rule name to a rule class