迈克尔·哈特尔的Rails的教程：未定义的方法`authenticate_with_salt”错误

Question

我在第9章的末尾，我越来越根页本身上的错误..

会议助手是

module SessionsHelper 
    def sign_in(user) 
    cookies.permanent.signed[:remember_token] = [user.id, user.salt] 
    current_user = user 
    end 
    def current_user 
    @current_user ||= user_from_remember_token 
    end 
    def signed_in? 
    !current_user.nil? 
    end 
    def sign_out 
    cookies.delete(:remember_token) 
    current_user = nil 
    end 
    private 

    def user_from_remember_token 
     User.authenticate_with_salt(*remember_token) 
    end 

    def remember_token 
     cookies.signed[:remember_token] || [nil, nil] 
    end 
end 

这里是我的user.rb

require 'digest' 
class User < ActiveRecord::Base 
    attr_accessor :password 
    attr_accessible :name, :email, :password, :password_confirmation 
    email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i 

    validates :name, :presence => true, 
        :length => { :maximum => 50 } 
    validates :email, :presence => true, 
        :format => { :with => email_regex }, 
        :uniqueness => { :case_sensitive => false } 
    validates :password, :presence => true, 
         :confirmation => true, 
         :length => {:within => 6..40 } 
    before_save :encrypt_password 
    def signed_in? 
    !current_user.nil? 


    def has_password?(submitted_password) 
    encrypted_password == encrypt(submitted_password) 
    end 

    def self.authenticate(email, submitted_password) 
    user = find_by_email(email) 
    return nil if user.nil? 
    return user if user.has_password?(submitted_password) 
    end 

    def self.authenticate_with_salt(id, cookie_salt) 
    user = find_by_id(id) 
    (user && user.salt == cookie_salt)? user : nil 
    end 

    private 
    def encrypt_password 
     self.salt = make_salt if new_record? 
     self.encrypted_password = encrypt(password) 
    end 
    def encrypt(string) 
     secure_hash("#{salt}--#{string}") 
    end 
    def make_salt 
     secure_hash("#{Time.now.utc}--#{password}") 
    end 
    def secure_hash(string) 
     Digest::SHA2.hexdigest(string) 
    end           
    end 
end 

和我session_controller是

class SessionsController < ApplicationController 
    def new 
    @title = "Sign in" 
    end 

    def create 
    user = User.authenticate(params[:session][:email], params[:session][:password]) 
    if user.nil? 
     flash.now[:error] = "Invalid email/password combination." 
     @title = "Sign in" 
     render 'new' 
    else 
     sign_in user 
     redirect_to user 
    end 
    end 

    def destroy 
    sign_out 
    redirect_to root_path 
    end 
end 

和users_controler是

class UsersController < ApplicationController 
    def show 
    @user = User.find(params[:id]) 
    @title = @user.name 
    end 

    def new 
    @user = User.new 
    @title = "Sign up" 
    end 

    def create 
    @user = User.new(params[:user]) 
    if @user.save 
     sign_in @user 
     flash[:success] = "Welcome to the Sample App!" 
     redirect_to @user 
    else 
     @title = "Sign up" 
     render 'new' 
    end 
    end 
end 

的事情是我在Rails中beginer和我正想通过这个教程ň卡住了就在这里。 请帮助guyz

这里是错误

错误说的截图：未定义的方法“authentication_with_salt”

Answer 1

我认为这是类似的问题，这是问及链接here

您错过了current_user作用域。检查上面的链接，并希望你能尽快解决你的问题。