# File activejob/lib/active_job/queue_name.rb, line 41
def queue_as(part_name = nil, &block)
  if block_given?
    self.queue_name = block
  else
    self.queue_name = queue_name_from_part(part_name)
  end
end

Specifies the name of the queue to process the job on.

class PublishToFeedJob < ActiveJob::Base
  queue_as :feeds

  def perform(post)
    post.to_feed!
  end
end

Can be given a block that will evaluate in the context of the job allowing self.arguments to be accessed so that a dynamic queue name can be applied:

class PublishToFeedJob < ApplicationJob
  queue_as do
    post = self.arguments.first

    if post.paid?
      :paid_feeds
    else
      :feeds
    end
  end

  def perform(post)
    post.to_feed!
  end
end