Debug of the FlashHash

controller.rb

class PostsController < ApplicationController
  def index
    flash[:notice]      = "Testing flash[:notice]"
    flash.now[:notice]  = "Testing flash.now[:notice]"
    flash[:alert]       = "Testing flash[:alert]"
    flash.now[:alert]   = "Testing flash.now[:alert]"
  end
end

flash_hash.yaml

--- &70297189362060 !ruby/object:ActionDispatch::Flash::FlashHash
used: !ruby/object:Set
  hash:
    :notice: true
    :alert: true
closed: false
flashes:
  :notice: Testing flash.now[:notice]
  :alert: Testing flash.now[:alert]
now: !ruby/object:ActionDispatch::Flash::FlashNow
  flash: *70297189362060

index.html.erb

<%= debug flash %>
<pre>
flash[:notice] 		== <%= flash[:notice] %>
flash.now[:notice] 	== <%= flash.now[:notice] %>
flash[:alert] 		== <%= flash[:alert] %>
flash.now[:alert] 	== <%= flash.now[:alert] %>
</pre>