CODEWITHSUNDEEP
ruby-on-rails
yzalavin
yzalavin

Reputation: 1836

How to use flash object in Sidekiq?

Suppose I have a Sidekiq worker like this: 

class MyWorker
  include Sidekiq::Worker

  def perform
    message = SomeImportantClass.new.get_message
    flash.now[:notice] = message 
  end
 end

So when the user visits page the worker is launched. Without leaving the page user gets notification from Sidekiq worker. I'm not so experienced in this field so I do not know where to start.

Upvotes: 0

Views: 396

Answers (1)

Sergio Tulentsev
Sergio Tulentsev

Reputation: 230551

You can't access flash from workers, because they are outside of request context.

You'll have to communicate with your request context via some kind of storage (your main DB or memcached/redis, for example).

The outline is like this:

  1. Store your message in the storage

    class MyWorker
  include Sidekiq::Worker

  def perform
    message = SomeImportantClass.new.get_message
    redis.set("messages:#{message.user.id.to_s}") = message.text
  end
 end

  2. Make an endpoint in your app that will show these messages for the current user

     class MyController
   def status
     msg = redis.get("messages:#{current_user.id.to_s}")
     render text: msg
   end
 end

  3. Have client-side JS poll this endpoint and show a notification/modal/whatever when it gets a message.

You have to use the polling or other mechanism of async update (websockets, etc.), because without it, once page is rendered, it won't automagically know about progress of your worker.

Upvotes: 1

Related Questions