用户已登录，但使用 Rails 和 Devise 设置为 nil

Question

>设计 (4.4.0(导轨 5.1.4我看到这个问题被问了很多，但没有找到适合我的答案。我显示我正在注册并登录，但当前用户设置为 nil。我在想也许是 cookie，但我很难准确解析如何解决这个问题。一种解决方案建议添加

 Rails.application.config.session_store :cookie_store, key: '_bejoy_session', domain: :all

到我没有的配置> session_store.rb，但创建并包含。我只是不确定我在这里错过了什么。

应用控制器：

class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception
  before_action :configure_permitted_parameters, if: :devise_controller?
  helper_method :current_user
  helper_method :admin
  def current_user
    if session[:user_id]
      @current_user ||= User.find(session[:user_id])
    end
  end
  def authorize
    if !current_user
     flash[:alert] = "You aren't authorized to visit that page."
     redirect_to '/'
    end
  end
  def admin_authorize
    if !current_user || current_user.admin == false
     flash[:alert] = "Only administrators can visit that page."
     redirect_to new_user_session_path
    end
  end
  def admin
    current_user && current_user.admin
  end
  protected
    def configure_permitted_parameters
      devise_parameter_sanitizer.permit(:sign_up, keys: [:username, :admin, :email])
    end
 end

路线.rb

Rails.application.routes.draw do
  root :to => 'contents#index'
  resources :contents
  resources :visitors
  devise_for :users, controllers: {
    sessions: 'users/sessions',
    passwords: 'users/passwords',
    registrations: 'users/registrations'
  }
end

终端：

Started POST "/users/sign_in" for 127.0.0.1 at 2018-01-07 12:31:25 -0800
Processing by Users::SessionsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"6a0yiBCkmEN0W68xN/lVZH71YhT5i5tMEkFFYqnoIvMU0NJjH3LM3hPG+8yO3D1tXskh9pSA+PRFVKDmiKzN6A==", "user"=>{"email"=>"[e-mail]", "password"=>"[FILTERED]", "remember_me"=>"0"}, "commit"=>"Log in"}
User Load (1.9ms)  SELECT  "users".* FROM "users" WHERE "users"."email" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["email", "[e-mail]"], ["LIMIT", 1]]
(0.1ms)  BEGIN
SQL (2.0ms)  UPDATE "users" SET "current_sign_in_at" = $1, "last_sign_in_at" = $2, "sign_in_count" = $3, "updated_at" = $4 WHERE "users"."id" = $5  [["current_sign_in_at", "2018-01-07 20:31:26.091228"], ["last_sign_in_at", "2018-01-07 20:29:10.402839"], ["sign_in_count", 5], ["updated_at", "2018-01-07 20:31:26.092407"], ["id", 2]]
(0.4ms)  COMMIT
Redirected to http://localhost:3000/
Completed 302 Found in 152ms (ActiveRecord: 4.5ms)

Started GET "/" for 127.0.0.1 at 2018-01-07 12:31:26 -0800
Processing by ContentsController#index as HTML
User Load (0.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 2], ["LIMIT", 1]]
**current_user :nil
session id request :353a5e1d2bd295e8ac665e22e8f31314
user_signed_in? :false**
Rendering contents/index.html.erb within layouts/application
Content Load (0.2ms)  SELECT "contents".* FROM "contents"
Rendered contents/index.html.erb within layouts/application (1.5ms)
Rendered partials/_author_photo_contact_block.html.erb (0.4ms)
Completed 200 OK in 53ms (Views: 49.1ms | ActiveRecord: 0.5ms)

内容控制器：

class ContentsController < ApplicationController
   before_action :authenticate_user!
   # before_action :set_content, only: [:show, :edit, :update, :destroy]
   def index
      @contents = Content.all
      logger.debug "current_user :#{current_user.inspect}"
      logger.debug "session id request :#{request.session_options[:id]}"
      logger.debug "user_signed_in? :#{user_signed_in?}"
   end
   def show
   end
   def new
     @content = Content.new
   end
   def edit
   end
   def create
     @content = Content.new(content_params)
     respond_to do |format|
       if @content.save
         format.html { redirect_to @content, notice: 'Content was successfully created.' }
         format.json { render :show, status: :created, location: @content }
       else
         format.html { render :new }
         format.json { render json: @content.errors, status: :unprocessable_entity }
       end
     end
   end
   def update
     respond_to do |format|
       if @content.update(content_params)
         format.html { redirect_to @content, notice: 'Content was successfully updated.' }
         format.json { render :show, status: :ok, location: @content }
       else
         format.html { render :edit }
         format.json { render json: @content.errors, status: :unprocessable_entity }
       end
     end
   end
   def destroy
     @content.destroy
     respond_to do |format|
       format.html { redirect_to contents_url, notice: 'Content was successfully destroyed.' }
       format.json { head :no_content }
     end
   end
   private
     def set_content
       @content = Content.find(params[:id])
     end
     def content_params
       params.require(:content).permit(:main_image, :sidebar_image, :content, :sidebar)
     end
 end

Answer 1

解决方案：我在应用程序控制器中的current_user方法是覆盖 DeVice 自己的current_user方法。我删除了应用程序控制器中的current_user方法，它现在显示：

current_user :#<User id: 2, email: "[e-mail]", username: "", admin: false, created_at: "2018-01-07 20:09:17", updated_at: "2018-01-07 21:33:51">
session id request :all
user_signed_in? :true
current user present? :true

在这里找到答案：设计 - 无法在 Rails 视图中显示登录或注销