Rails：CanCanCan可以限制资源创建的数量(Rails: CanCanCan to limit number of resource creation)

Rails：CanCanCan可以限制资源创建的数量(Rails: CanCanCan to limit number of resource creation)

我正在使用CanCanCan gem作为我的rails应用程序。 我想根据用户订阅计划限制page创建的数量。 例如，具有basic计划的用户最多只能创建10页。 我怎样才能实现它？ 我试图通过使用以下规则来引入限制：

can :create, :pages if user.subscription_plan == "basic" && Page.count <= 10

但是一旦我的页码超过10，它就会阻止访问pages控制器上的每个控制器。 我在pages控制器上使用以下代码。

before_action :authorize_user . . . def authorize_user authorize! :create, :pages rescue => e redirect_to admin_path, :alert => "You've reached your page creation limit." end

如何最好地达到我所要求的效果？

I'm using CanCanCan gem for my rails app. I want to limit number of page creation based on user subscription plan. e.g. user having basic plan can only create maximum of 10 pages. How can I achieve it? I've tried to introduce a limitation by using following rule:

can :create, :pages if user.subscription_plan == "basic" && Page.count <= 10

But as soon as my page number exceeds 10 it block access to every controller on pages controller. I'm using following code on pages controller.

before_action :authorize_user . . . def authorize_user authorize! :create, :pages rescue => e redirect_to admin_path, :alert => "You've reached your page creation limit." end

How best to achieve my required affect?

最满意答案

您的之前操作将针对控制器中的每个操作触发。 将其限制为“创建”操作：

before_action :authorize_user, only: :create

Your before action is triggered for every action in the controller. Limit it to 'create' action:

before_action :authorize_user, only: :create