Rails 4-通过设计使用命名空间STI模型

Question

我的rails应用程序具有5个扩展User用户模型。 所有这些都具有名称空间User::UserTypeHere 。 当我尝试注销应用程序时，devise尝试访问模型，就好像它们属于顶层名称空间一样，并且出现以下错误：

"The single-table inheritance mechanism failed to locate the subclass: 'SuperUser'. This error is raised because the column 'type' is reserved for storing the class in case of inheritance..."

如何以一种能够识别我的命名空间模型的方式来设置路线？

routes.rb片段

...
devise_for :users, skip: [:sessions, :passwords, :confirmations, :registrations, :unlocks]
devise_scope :user do

# authentication
unauthenticated :user do
  root to: 'users/devise/sessions#new', as: 'new_user_session'
end
authenticated :user do
  root to: 'application#index'
end

get '/login', to: 'users/devise/sessions#new', as: 'user_login_view'
post '/login', to: 'users/devise/sessions#create', as: 'user_session'
get '/logout', to: 'users/devise/sessions#destroy', as: 'destroy_user_session'

# registrations
get '/join', to: 'users/registrations#new', as: 'new_user_registration'
post '/join', to: 'users/registrations#create', as: 'user_registration'

# user accounts
scope '/account' do
  # confirmation
  get '/verification', to: 'users/confirmations#verification_sent', as: 'user_verification_sent'
  get '/confirm', to: 'users/confirmations#show', as: 'user_confirmation'
  get '/confirm/resend', to: 'users/confirmations#new', as: 'new_user_confirmation'
  post '/confirm', to: 'users/confirmations#create'

  # passwords
  get '/reset-password', to: 'users/passwords#new', as: 'new_user_password'
  get '/reset-password/change', to: 'users/passwords#edit', as: 'edit_user_password'
  put  '/reset-password', to: 'users/passwords#update', as: 'user_password'
  post '/reset-password', to: 'users/passwords#create'

  # unlocks
  post '/unlock', to: 'users/unlocks#create', as: 'user_unlock'
  get '/unlock/new', to: 'users/unlocks#new', as: 'new_user_unlock'
  get '/unlock', to: 'users/unlocks#show'

  # settings & cancellation
  # get '/cancel', to: 'users/registrations#cancel', as: 'cancel_user_registration'
  # get '/settings', to: 'users/registrations#edit', as: 'edit_user_registration'
  # put '/settings', to: 'users/registrations#update'
  # account deletion
  # delete '', to: 'users/registrations#destroy'
end
end
...

user.rb（模型）

class User < ActiveRecord::Base
    devise :database_authenticatable, :registerable,
        :recoverable, :rememberable, :trackable, :validatable
end

users / super_user.rb（模型）

class Users::SuperUser < User
    ...
end

用户/色器件/ sessions_controller.rb

class Users::Devise::SessionsController < Devise::SessionsController
    ...
end

Answer 1

用户的type列的值必须是Users::SuperUser ，而不仅仅是SuperUser ，以便Rails自动加载可以找到正确的类路径。

另外，记住要在更改类时重新启动Rails控制台和服务器，并且不要让旧的用户实例的类型值保持错误，因为这将迫使Rails在找到它们时触发错误