【发布时间】：2015-02-26 22:49:25
【问题描述】：
我正在创建一个具有两种用户类型的 Rails 应用：司机和机械师。
到目前为止，我已经完全设置了司机类（称为“用户”），其中包含连接“汽车”模型的配置文件和属性，以便他们可以将汽车添加到他们的配置文件中。
现在我需要创建类似于商业页面的“机械师”用户，包括地址、提供的服务等，然后这些机械师会将司机添加为他们的客户。
我的直觉是创建一个新的机制模型，并以与我创建用户模型相同的方式设置它，但具有适当的架构。我想我可能会遇到sessions helper 的问题，因为很多功能都使用了“用户”。我可以在会话助手中复制这些项目并将“用户”替换为“机械师”，但我不确定这是否可行。
我考虑过使用像 cancancan 这样的 gem 来限制用户，但这似乎有问题。还想知道我是否可以使用当前的“用户”类并创建另外两个从用户继承的模型（驱动程序和机制），每个模型都有特定的功能。
我真的需要知道从哪个方向开始才能实现这一点，所以任何建议、有用的 rails casts 的链接等都会令人惊叹。谢谢！
会话助手
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
def current_user?(user)
user == current_user
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
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
# Redirects to stored location (or to the default).
def redirect_back_or(default)
redirect_to(root_url)
session.delete(:forwarding_url)
end
# Stores the URL trying to be accessed.
def store_location
session[:forwarding_url] = request.url if request.get?
end
end
user.rb
class User < ActiveRecord::Base
has_many :cars
attr_accessor :remember_token
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 :phone, presence:true
validates :password, length: { minimum: 6 }, allow_blank: true
# 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)
return false if remember_digest.nil?
BCrypt::Password.new(remember_digest).is_password?(remember_token)
end
def forget
update_attribute(:remember_digest, nil)
end
def feed
Car.where("user_id = ?", id)
end
end
cookies.permanent.signed[:user_id] = user.id
cookies.permanent[:remember_token] = user.remember_token
end
def current_user?(user)
user == current_user
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
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
# Redirects to stored location (or to the default).
def redirect_back_or(default)
redirect_to(root_url)
session.delete(:forwarding_url)
end
# Stores the URL trying to be accessed.
def store_location
session[:forwarding_url] = request.url if request.get?
end
end
【问题讨论】：
标签： ruby-on-rails ruby session rails-models