Call the same policy multiple times

[Tao-Galasse]

Hello @palkan ! 👋

First of all, thank you for your amazing gem 💎

Here is my issue: in my mutation, I want to run the same validation multiple times, because my record may have change.

To be more specific, I have a Demand object which has a status. I have an AcceptDemand mutation, which changes the status of the demand to the next one.
But, my users may have several roles, allowing them the accept multiple statuses at a time ; so I wrote something like this :

demand.status = demand.next_status
demand.status = demand.next_status while authorize! demand, to: :accept?

However, I realized we do not re-do the checks ; once the authorize! has been called, it is never called again, and returns the same result than the first time.
The issue is the same with authorize! or allowed_to? methods.

I understand it is probably a cache feature which makes sense in most cases, but could it be possible to force the accept? policy to be run again?

Thanks for your help & have a good day 😊

[palkan]

Hey,

Thanks for the details. That's an interesting use case.

To bust the cache, you can try providing a custom context to every authorize! call:

demand.status = demand.next_status
iter = 0
loop do
  break if allowed_to?(:accept?, demand, context: {iter:})
  demand.status = demand.next_status
  iter += 1 
end

See it in action: https://runruby.dev/?gist=edddad2f3de94673cae7ca6254910ee7

[Tao-Galasse]

That's a good work around ! 😄

Thanks a lot @palkan, I'll try this :) Nice idea! 💡