我收到以下错误。我是编程新手,我理解这是一个没有定义摘要方法的问题。但是,在我的用户方法中,它被定义为User.Digest(字符串)。希望有人可以向我发送正确的方向来帮助解决这个问题。
错误1
ERROR["test_current_user_returns_nil_when_remember_digest_is_wrong", SessionsHelperTest, 0.722231]
test_current_user_returns_nil_when_remember_digest_is_wrong#SessionsHelperTest (0.72s)
NoMethodError: NoMethodError: undefined method `digest' for true:TrueClass
app/models/user.rb:38:in `authenticated?'
app/helpers/sessions_helper.rb:21:in `current_user'
test/helpers/sessions_helper_test.rb:17:in `block in <class:SessionsHelperTest>'
app/models/user.rb:38:in `authenticated?'
app/helpers/sessions_helper.rb:21:in `current_user'
test/helpers/sessions_helper_test.rb:17:in `block in <class:SessionsHelperTest>'
错误2
ERROR["test_current_user_returns_right_user_when_session_is_nil", SessionsHelperTest, 0.736168]
test_current_user_returns_right_user_when_session_is_nil#SessionsHelperTest (0.74s)
NoMethodError: NoMethodError: undefined method `digest' for true:TrueClass
app/models/user.rb:38:in `authenticated?'
app/helpers/sessions_helper.rb:21:in `current_user'
test/helpers/sessions_helper_test.rb:11:in `block in <class:SessionsHelperTest>'
app/models/user.rb:38:in `authenticated?'
app/helpers/sessions_helper.rb:21:in `current_user'
test/helpers/sessions_helper_test.rb:11:in `block in <class:SessionsHelperTest>'
SessionsHelperTest
require 'test_helper'
class SessionsHelperTest < ActionView::TestCase
def setup
@user = users(:kyle)
remember(@user)
end
test "current_user returns right user when session is nil" do
assert_equal @user, current_user
assert is_logged_in?
end
test "current_user returns nil when remember digest is wrong" do
@user.update_attribute(:remember_digest, User.digest(User.new_token))
assert_nil current_user
end
end
用户方法
class User < ActiveRecord::Base
attr_accessor :remember_token
before_save { email.downcase! }
validates :name, presence: true, length: { maximum: 50 }
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[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, 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
# Forgets a user.
def forget
update_attribute(:remember_digest, nil)
end
#Returns true if the given token matches the digest.
def authenticated?(remember_token)
return false if remember_digest.nil?
BCrypt::Password.new(remember.digest).is_password?(remember_token)
end
end
模块SessionsHelper
# Logs in the given user.
def log_in(user)
session[:user_id] = user.id
end
#Remembers a user in a persistent session.
def remember(user)
user.remember
cookies.permanent.signed[:user_id] = user.id
cookies.permanent[:remember_token] = user.remember_token
end
#Returns the user corresponding to the remember token cookie.
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
#Returns true if the user is logged in, false otherwise.
def logged_in?
!current_user.nil?
end
# Forgets a persistent session.
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
答案 0 :(得分:2)
您正在调用remember.digest
。 remember
是一个返回布尔值true
的方法,因此出现错误消息:
NoMethodError:未定义的方法`digest'表示true:TrueClass
鉴于上下文中的代码......
return false if remember_digest.nil?
BCrypt::Password.new(remember.digest).is_password?(remember_token)
......很明显第二行应该使用remember_digest
,而不是remember.digest
:
BCrypt::Password.new(remember_digest).is_password?(remember_token)
|
underscore, not period --'