下面使用 Rails 4 的书中的特定代码我相信 rails 5 需要强大的参数，这可能会导致 Rails 5 出错。请任何人都可以分享我。如何申请许可证和要求以下代码）
来自模型 user.rb
def remember
remember_token = User.new_token
update_attribute(:remember_digest, User.digest(remember_token))
end
错误（在轨道 5 中）
NoMethodError in SessionsController#create
undefined method `update_attribute' for #<Class
这就是我所做的。
def remember
remember_token = User.new_token
update_attribute(:remember_digest, User.digest(params:[remember_token]))
end
错误：
NoMethodError in SessionsController#create
undefined method `update_attribute' for #<Class:0x007fd23b30a790> Did you mean? _default_attributes
明确一点：从 sessionhelper.erb 调用的那些方法
module 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
用户.rb
class User < ApplicationRecord
attr_accessor :remember_token, :activation_token, :reset_token, :remember_digest
before_save { self.email = email.downcase }
validates :name, presence: true, length: { maximum: 50 }
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[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 }
class << self
# Returns the hash digest of the given string.
def digest(string)
cost = ActiveModel::SecurePassword.min_cost ? BCrypt::Engine::MIN_COST :
BCrypt::Engine.cost
BCrypt::Password.create(string, cost: cost)
end
def remember
remember_token = User.new_token
update_attribute(:remember_digest, User.digest(remember_token))
end
# Returns a random token.
def new_token
SecureRandom.urlsafe_base64
end
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
def activate
update_attribute(:activated, true)
update_attribute(:activated_at, Time.zone.now)
end
end
会话控制器.rb
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
redirect_to url_for(:controller => :sessions, :action => :new)
end
end
