哈特尔Rails的教程章节8.46 NoMethodError
问题描述:
一个我我的测试中收到以下错误哈特尔的Rails的教程的第8章。哈特尔Rails的教程章节8.46 NoMethodError
> 1) Error:
> UsersLoginTest#test_login_with_valid_information_followed_by_logout:
> NoMethodError: undefined method `forget' for #<Class:0x000000079be3b0>
> app/helpers/sessions_helper.rb:30:in `forget'
> app/helpers/sessions_helper.rb:37:in `log_out'
> app/controllers/sessions_controller.rb:18:in `destroy'
> test/integration/users_login_test.rb:40:in `block in <class:UsersLoginTest>'
我试着完全像在教程中一样拷贝和粘贴代码,但它似乎没有解决问题。
这里是我的会话助手
module SessionsHelper
def log_in(user)
session[:user_id] = user.id
end
def remember(user)
user.remember
cookies.permanent.signed[:user_id] = user.id
cookies.permanent[:remember_token] = user.remember_token
end
def current_user
if (user_id = session[:user_id])
@current_user ||= User.find_by(id: user_id)
elsif (user_id = cookies.signed[:user_id])
user = User.find_by(id: user_id)
if user && user.authenticated?(cookies[:remember_token])
log_in user
@current_user = user
end
end
end
def logged_in?
!current_user.nil?
end
def forget(user)
user.forget
cookies.delete(:user_id)
cookies.delete(:remember_token)
end
# Logs out the current user.
def log_out
forget(current_user)
session.delete(:user_id)
@current_user = nil
end
end
我的会话控制器低于
class SessionsController < ApplicationController
def new
end
def create
user = User.find_by(email: params[:session][:email].downcase)
if user && user.authenticate(params[:session][:password])
log_in user
remember user
redirect_to user
else
flash.now[:danger] = 'Invalid email/password combination'
render 'new'
end
end
def destroy
log_out if logged_in?
redirect_to root_url
end
end
任何建议将非常感谢!
答
在这里我们可以看到真正的错误信息密切关注的重要性。它说有一个“没有方法错误”。好。因此,我们正在做与用户的东西,而且也没有方法。用户是一个模拟的事情,所以让我们来看看应用程序/模型/ user.rb:
class User < ActiveRecord::Base
attr_accessor :remember_token
before_save { self.email = email.downcase }
validates :name, presence: true, length: { maximum: 50 }
VALID_EMAIL_REGEX = /\A[\w+\-.][email protected][a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true, length: { maximum: 255 },
format: { with: VALID_EMAIL_REGEX },
uniqueness: { case_sensitive: false }
has_secure_password
validates :password, presence: true, length: { minimum: 6 }
# Returns the hash digest of the given string.
def User.digest(string)
cost = ActiveModel::SecurePassword.min_cost ? BCrypt::Engine::MIN_COST :
BCrypt::Engine.cost
BCrypt::Password.create(string, cost: cost)
end
# Returns a random token.
def User.new_token
SecureRandom.urlsafe_base64
end
# Remembers a user in the database for use in persistent sessions.
def remember
self.remember_token = User.new_token
update_attribute(:remember_digest, User.digest(remember_token))
end
# Returns true if the given token matches the digest.
def authenticated?(remember_token)
BCrypt::Password.new(remember_digest).is_password?(remember_token)
end
# Forgets a user.
def forget
update_attribute(:remember_digest, nil)
end
end
我们看到,在最后,有一个被称为创建方法“忘记”
def forget
#something
end
打开了方法来从其他控制器和助手,您已在会话部分已经创建的电话。
+1
的'forget'方法? ,问题中没有这样的事情 – illusionist
看起来你忘了你是从哪里得到这个代码,定义在'User'模型 – illusionist