Ruby on rails 使用rails设置gem时getter/settings不工作-方法丢失错误

我正在使用rails设置宝石：

getter/setter方法不工作

我已按照指示将以下行添加到我的用户模型中：

include RailsSettings::Extend

在使用RolifyGem时，我还尝试将其添加到role.rb

但是，我仍然收到以下错误消息：

NoMethodError: undefined method `settings' for #<User:0x007f8dd017a560>
    from /Users/jamieturner/.rvm/gems/ruby-2.0.0-p353@accufly/gems/activemodel-3.2.13/lib/active_model/attribute_methods.rb:407:in `method_missing'
    from /Users/jamieturner/.rvm/gems/ruby-2.0.0-p353@accufly/gems/activerecord-3.2.13/lib/active_record/attribute_methods.rb:149:in `method_missing'
    from /Users/jamieturner/.rvm/gems/ruby-2.0.0-p353@accufly/gems/rolify-3.2.0/lib/rolify/role.rb:73:in `method_missing'
    from (irb):24
    from /Users/jamieturner/.rvm/gems/ruby-2.0.0-p353@accufly/gems/railties-3.2.13/lib/rails/commands/console.rb:47:in `start'
    from /Users/jamieturner/.rvm/gems/ruby-2.0.0-p353@accufly/gems/railties-3.2.13/lib/rails/commands/console.rb:8:in `start'
    from /Users/jamieturner/.rvm/gems/ruby-2.0.0-p353@accufly/gems/railties-3.2.13/lib/rails/commands.rb:41:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

---

有人知道问题是什么吗？

好的，我已经解决了问题

我没有重新启动控制台会话…重新启动它使其工作

user = User.find(2)
user.settings.color = :red