ruby-on-rails - 启动 Rails 服务器时出错 - 获取 "uninitialized constant Devise::Models::Invitable (NameError)"

Question

我是 Rails 的新手，正在尝试按照这个预启动注册教程进行操作 - http://railsapps.github.com/tutorial-rails-prelaunch-signup.html

使用 $ rails s 初始化 rails 服务器时，我收到以下错误消息:

Users/pv/.rvm/gems/ruby-1.9.3-p194@rails326/gems/devise-2.1.2/lib/devise/models.rb:97:in `const_get': 未初始化常量设计::模型::邀请(NameError)

后面跟着一堆文件路径，比如:

from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/devise-2.1.2/lib/devise/models.rb:97:in `block (2 levels) in devise'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/devise-2.1.2/lib/devise/models.rb:92:in `each'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/devise-2.1.2/lib/devise/models.rb:92:in `block in devise'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/devise-2.1.2/lib/devise/models.rb:123:in `devise_modules_hook!'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/devise-2.1.2/lib/devise/models.rb:90:in `devise'
from /Users/patrickvihtelic/code/rails-prelaunch-signup/app/models/user.rb:5:in `<class:User>'
from /Users/patrickvihtelic/code/rails-prelaunch-signup/app/models/user.rb:1:in `<top (required)>'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:230:in `block in constantize'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:229:in `each'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:229:in `constantize'
from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/devise-2.1.2/lib/devise.rb:256:in `get'

任何人都可以给我提示或指出正确的方向吗？

谢谢!

帕特

Answer 1

你需要添加:

require 'devise_invitable'

到 config/initializers/devise.rb。这将消除此错误。