在Rails博客中创建和显示用户时遇到问题

我尝试创建一个简单的Rails博客时尝试创建和显示错误时会遇到各种各样的错误，请告诉我是否看到明显的内容，或者是否需要我在尝试输入一些代码后发布更多代码的事情，但无济于事。谢谢

浏览器给我这个错误

找不到没有ID的用户

在我的“ logged_in？”中 显示的方法

def logged_in?
   @current_user ||= User.find(session[:user_id])
end

会话控制器

class SessionsController < ApplicationController
def new
end

  def create
    user = User.find_by(email: params[:email])
    if user && user.authenticate(params[:password])
     session[:user_id] = user.id
     flash[:success] = "You are logged in"
     redirect_to root_path
    else
  render action: 'new'
    flash[:error] = "There was a problem logging in. Please check your email and password"
   end
  end
end


def index
 @users = User.all
end

def show
end


def new
 @user = User.new
end


def edit
end


def create
  @user = User.new(user_params)
   if @user.save
     session[:user_id] = @user.id
     flash[:notice] = "You have registered, please login"
     redirect_to login_path
  else
   render :new
  end
end



  def update
     respond_to do |format|
      if @user.update(user_params)
       format.html { redirect_to @user, notice: 'User was successfully updated.' }
       format.json { head :no_content }
      else
       format.html { render action: 'edit' }
       format.json { render json: @user.errors, status: :unprocessable_entity }
     end
   end
  end


def destroy
    @user.destroy
    respond_to do |format|
     format.html { redirect_to users_url }
     format.json { head :no_content }
   end
end

private

def set_user
  @user = User.find(params[:id])
end


  def user_params
   params.require(:user).permit(:first_name, :last_name, :email, :password, :password_confirmation)
  end
end

物品管制员

  class ArticlesController < ApplicationController

   http_basic_authenticate_with name: "dhh", password: "secret", except: [:index, :show]

 def new
   @article = Article.new
 end

 def index
  @article = Article.all
 end

  def create  
    @article = Article.new(article_params)
     if @article.save
    redirect_to @article
     else
    render 'new'
     end
  end

 def edit
   @article = Article.find(params[:id])
 end

 def update
   @article = Article.find(params[:id])
   if @article.update(article_params)
     redirect_to @article
   else
  render 'edit'
  end
 end

  def show
    @article = Article.find(params[:id])
  end

 def destroy
   @article = Article.find(params[:id])
   @article.destroy

   redirect_to articles_path
 end



 private

 def article_params
   params.require(:article).permit(:title, :text, :image)
 end
end

应用程序助手

   module ApplicationHelper

 def logged_in?
   @current_user ||= User.find(session[:user_id])
  end
 end