如何在 Rails 中使用 CanCan？

Question

我正在开发一个名为广告牌管理门户网站的项目。 我的routes.rb看起来像：

Rails.application.routes.draw do
  get "/", to: "main#index"

  get "/login", to: "login#loginpage"

  post "/login", to: "login#create"


  get "/register", to: "register#signup"

  post "/register",to: "register#create"

  get "/owner", to: "owner#ownerdashboard"

  get "/client", to: "client#clientdashboard"

  delete "/logout" , to: "login#destroy"

  get "/addbillboard", to: "addbillboard#add"

  post "/addbillboard", to: "addbillboard#addboard"

  get "/showboards", to: "showboards#showboards"

end

目前我只有两个模型所有者（用于用户详细信息）和板（用于广告牌详细信息）。我有很多控制器正在使用这两种模型。现在我想将 cancan 与我的网络应用程序集成：特定用户可以访问特定页面。我的主要问题是防止客人访问所有者页面。就像只有注册所有者才能添加广告牌一样。 我怎样才能确保这一点？ 期待您的答复。

Answer 1

也许你应该先阅读，我认为这是可以理解的

https://github.com/CanCanCommunity/cancancan

https://github.com/CanCanCommunity/cancancan/blob/develop/docs/README.md

您需要定义 Ability 类

，也许这样的

class Ability
  include CanCan::Ability

  def initialize(user)
    can :create, Billboard if owner?(user)
  end
  
  private def owner?(user)
   user.is_owner?
  end
end

实现是根据您的具体情况