Rails 3 - CanCan錯誤？ NameError（未初始化的常量Ability :: Invitation）：

Question

錯誤：

NameError (uninitialized constant Ability::Invitation):
  app/models/ability.rb:72:in `initialize'
  app/controllers/invitations_controller.rb:12:in `new'
  app/controllers/invitations_controller.rb:12:in `current_ability'
  app/middleware/flash_session_cookie_middleware.rb:14:in `call'

CanCan我有：

can :manage, Invitation

在邀請控制器中：

before_filter：current_ability #CanCan load_and_authorize_resource #CanCan

def current_ability @current_ability || = Ability.new（current_user，nil）結束

應用程序的控制器：

#CanCan
def current_ability
    @current_ability ||= Ability.new(current_user, nil) # since no group
end

路線：

resources :invitations

有什么想法為什么CanCan不開心？ 謝謝

Answer 1

看起來您正在嘗試引用未定義的類。 app/models/invitation.rb中是否有定義此Invitation類的文件？