Ruby on rails 4 登录后将root更改为usershow

我似乎无法在Rails 4应用程序中找到更改的根。我只想在用户登录后更改根目录，以便它指向用户显示页面

我得到以下错误：

找不到没有ID的用户

My routes.rb看起来是这样的：

devise_for :users, :path_names => {:sign_up => "register", } 

  authenticated :user do
    root to: "users#show", as: :authenticated_root
 end

  unauthenticated do
    get 'welcome/index'
    root to: "static#index"
  end

  match 'users/:id' => 'users#show', as: :user, via: :get

   get "/asian-century" => "static#asian-century"
   get "/pricing" => "static#about"
   get "/about" => "static#pricing"
   get "/chatroom" => "static#chatroom"

class UsersController < ApplicationController
  before_action :set_user, only: [:show, :edit, :update, :destroy]
  def index
    @users = User.all
  end

  def show
     if params[:id]
        @user = User.find(params[:id])
     else
        @user = current_user
     end
     @userlessons = @user.lessons_to_attend.where("starts_at > ?", Time.now.advance(:hours => -1)).order(starts_at: :asc)

     unless @user == current_user
        redirect_to :back, :alert => "Access denied."
     end
  end

private
    # Use callbacks to share common setup or constraints between actions.
    def set_user
      @user = User.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def user_params
      params[:user]
    end
end
 ...

我的用户控制器喜欢这样：

devise_for :users, :path_names => {:sign_up => "register", } 

  authenticated :user do
    root to: "users#show", as: :authenticated_root
 end

  unauthenticated do
    get 'welcome/index'
    root to: "static#index"
  end

  match 'users/:id' => 'users#show', as: :user, via: :get

   get "/asian-century" => "static#asian-century"
   get "/pricing" => "static#about"
   get "/about" => "static#pricing"
   get "/chatroom" => "static#chatroom"

class UsersController < ApplicationController
  before_action :set_user, only: [:show, :edit, :update, :destroy]
  def index
    @users = User.all
  end

  def show
     if params[:id]
        @user = User.find(params[:id])
     else
        @user = current_user
     end
     @userlessons = @user.lessons_to_attend.where("starts_at > ?", Time.now.advance(:hours => -1)).order(starts_at: :asc)

     unless @user == current_user
        redirect_to :back, :alert => "Access denied."
     end
  end

private
    # Use callbacks to share common setup or constraints between actions.
    def set_user
      @user = User.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def user_params
      params[:user]
    end
end
 ...

---

你能发布完整的错误跟踪吗？@Pavan这有帮助吗？New edit.Yes.您可以发布控制器的设置用户方法吗？