“未定义的方法‘user_signed_in？’当 `devise_For` 缺失时

Question

我想删除设计路线，因为我为我的目的构建了自定义路线和控制器。但是，我注意到当我删除路由中的 devise_for :users 行并将其替换为仅...

路由文件

  devise_scope :user do
    delete 'logout', to: 'devise/sessions#destroy'
  end

我没有收到错误：

查看：

错误：

"未定义的方法`user_signed_in?'对于#"

为什么助手需要路由？它需要哪些路线？我可以只定义助手吗？

我也打算用current_user.present?和sign_in @user，但不知道以后会不会出错，因为我无法通过未定义的方法。

来自设计宝石：https://github.com/heartcombo/devise/blob/45b831c4ea5a35914037bd27fe88b76d7b3683a4/lib/devise/rails/routes.rb

# Let's say you have an User model configured to use authenticatable,
    # confirmable and recoverable modules. After creating this inside your routes:
    #
    #   devise_for :users
    #
    # This method is going to look inside your User model and create the
    # needed routes:
    #
    #  # Session routes for Authenticatable (default)
    #       new_user_session GET    /users/sign_in                    {controller:"devise/sessions", action:"new"}
    #           user_session POST   /users/sign_in                    {controller:"devise/sessions", action:"create"}
    #   destroy_user_session DELETE /users/sign_out                   {controller:"devise/sessions", action:"destroy"}
    #
    #  # Password routes for Recoverable, if User model has :recoverable configured
    #      new_user_password GET    /users/password/new(.:format)     {controller:"devise/passwords", action:"new"}
    #     edit_user_password GET    /users/password/edit(.:format)    {controller:"devise/passwords", action:"edit"}
    #          user_password PUT    /users/password(.:format)         {controller:"devise/passwords", action:"update"}
    #                        POST   /users/password(.:format)         {controller:"devise/passwords", action:"create"}
    #
    #  # Confirmation routes for Confirmable, if User model has :confirmable configured
    #  new_user_confirmation GET    /users/confirmation/new(.:format) {controller:"devise/confirmations", action:"new"}
    #      user_confirmation GET    /users/confirmation(.:format)     {controller:"devise/confirmations", action:"show"}
    #                        POST   /users/confirmation(.:format)     {controller:"devise/confirmations", action:"create"}

Answer 1

devise_for 是 Devise 连接到整个框架并设置其助手的方式。因此，完全跳过并不是您想要的方式。如果您只想更改路径的名称，请改用正确的选项：

# availabe path_names are 
# :sign_in, :sign_out, :sign_up, :password, :confirmation, :unlock.
devise_for :users, only: :sessions, 
  path_names: {
    sign_out: 'logout'
  }

skip: 和 only: 选项可用于限制生成的路由：

devise_for :users, 
  only: :sessions, 
  path_names: {
    sign_out: 'logout'
  }

devise_for :users, 
  skip: [:registrations, :passwords, :confirmations], 
  path_names: {
    sign_out: 'logout'
  }

如果你真的想使用路径/user/...而不是/users/...：

devise_for :users, only: :sessions, 
  path: 'user',
  path_names: {
    sign_out: 'logout'
  }

虽然不是我推荐的东西。

见ActionDispatch::Routing::Mapper#devise_for。