Rails Devise current_user 在匹配项中未定义?高级路由约束 [英] Rails Devise current_user is undefined in a matches? advanced route constraint

问题描述

我收到错误 NameError(未定义的局部变量或方法current_user" for #): 当我尝试在 匹配项中使用 current_user 时? 约束.我希望某些虚拟用户被路由到一组控制器，而其他用户被路由到另一组控制器.但是，当我尝试使用 current_user 时出现错误.

I get an error NameError (undefined local variable or method "current_user" for #<APIRouter:0x007ffd54a81f98>): when I try to use current_user in a matches? constraint. I want certain dummy user to be routed to one set of controllers and other users to be routed to another set of controllers. However, when I try to use current_user I get an error.

• 设计 (2.0.4)
• 导轨 (3.2.2)

我的匹配约束在 APIRouter 类中定义:

My matches constraint is defined in the APIRouter Class:

class APIRouter
  def matches? request
    @use_rm_app = ENV["USE_RM_APP"] == "true" || (current_user && current_user.is_test)
  end
end

关于如何在比赛中使用当前用户的任何想法?Rails 指南中定义的约束.

Any ideas as to how I can use current user in the matches? constraint as defined in the Rails guide.

来自 routes.rb 文件的部分:

Section from the routes.rb file:

#  Route to the rm_app controller if APIRouter says we should, otherwise use the real backend controllers.
match '/api/v1/*path', :controller => 'api/v1', 
  :action => 'handle_create_request', 
  :via => :post, :constraints => APIRouter.new

更新:感谢 ksol 解决. 尝试 3 有效.使用 request.env["warden"].user(:user)

解决办法是修改APIRouter

Solution is to modify the APIRouter

  def matches? request
    user = request.env["warden"].user(:user)
    (user && user.is_test) || ENV["USE_RM_APP"] == "true"
  end

推荐答案

current_user 仅在您的控制器和视图中可用.实现您想要的目标的方法不止一种，将其作为参数提供给您的方法越容易.

current_user is only available in your controllers and views. There is more than one way to achieve what you want, the easier being supplying it as a parameter to your method.

编辑

如果 current_user 如果在路由器中可以访问，您可以通过执行 constraints: APIRouter.new(current_user) 将其传递给您的约束类.然后您需要定义 APIRouter#initialize 并将 current_user 存储在您可以在 matches? 中使用的实例变量中.

if current_user if accessible in the router, you can pass it to your constraints class by doing constraints: APIRouter.new(current_user). Then you need to define APIRouter#initialize and store the current_user in an instance var that you can use in matches?.

编辑 2

我只记得设计允许您在路由器中执行此操作:

I just remembered devise allows you to do this in your router :

authenticated :user do
  root :to => "main#dashboard"
end

我不知道如何确保user.is_test.

编辑 3

最后一次尝试.request.env["warden"].user(:user) 应该给你一个用户，如果一个用户通过身份验证.

Last attempt. request.env["warden"].user(:user) should give you a user if one is authenticated.

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