Rails:一旦达到限制，如何自动升级用户帐户?

I have a rails app which stores files, in which a user can subscribe to three plans:

我有一个存储文件的rails应用，用户可以订阅三个计划:

• plan 1: free trial up to 50 files for 30 days
• 计划一:免费试用50个文件，30天
• plan 2: up to 250 files
• 计划2:多达250个文件。
• plan 3: up to 500 files
• 计划3:最多500个文件

How would I go about automatically upgrading/downgrading the user plans when:

当:

• The 30 day trial ends or user uploads more than 50 files
• 30天的试用结束或用户上传超过50个文件
• File limit is exceeded and goes into another bracket
• 文件限制被超过并进入另一个括号
• Or a file is deleted and the user goes down a level
• 或者一个文件被删除，用户进入一个级别

How do I set the Rails app to "Watch" a user account for these changes?

如何设置Rails应用程序来“监视”用户帐户的这些更改?

Is there a better way than sticking logic in the Files controller create and delete actions? And what about the 30 day trial logic? Thank you!

有比在文件控制器中插入逻辑创建和删除操作更好的方法吗?那么30天的试验逻辑呢?谢谢你！

Note: I can handle the actual switching of the subscriptions just fine, just looking for logic to monitor and trigger the switches.

注意:我可以很好地处理订阅的实际切换，只是寻找逻辑来监视和触发开关。

2 个解决方案

#1

Setup association callbacks on the user's Plan. Assuming you have a has_many relationship to Plan, in User.rb you could have something like

设置关联回调用户的计划。假设您在User中有一个要计划的has_many关系。rb可以是这样的

has_many :plans, :through => :user_plans,
  :after_add => :check_plan_eligibility,
  :after_remove => :check_plan_eligibility

and then

然后

protected
def check_plan_eligibility(obj)
  # Do checks here based on your rules, and update the user's plan ID accordingly
end

#2

Observers (http://api.rubyonrails.org/classes/ActiveRecord/Observer.html)

观察者(http://api.rubyonrails.org/classes/ActiveRecord/Observer.html)

or

或

ActiveRecord::Callbacks (http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html)

ActiveRecord::回调(http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html)

30 day trial could be checked upon user login. The rest could be done using callbacks when the user updates.

30天的试用可以在用户登录后进行检查。其余的可以在用户更新时使用回调来完成。