Question

ruby-1.9.3-p194
Rails 3.0.9

I encountered so much strange behavior of flash variable.

My controller

class AdviceController < ApplicationController
    # POST /advice/save.js
    def save
        t = Logger.new(STDOUT)

        t.debug '+============================================'
        t.debug flash['advice-saving-error-msg']
        t.debug '+============================================'

        flash['advice-saving-error-msg'] = 'strange string'

        t.debug '============================================'
        t.debug flash['advice-saving-error-msg']
        t.debug '============================================'
    end
end

When I ask save action first time I see in debug:

+============================================
nil
+============================================
============================================
strange string
============================================

When I ask save action next time I see in debug!!!!!!!!!!!!:

+============================================
strange string
+============================================
============================================
strange string
============================================

It makes me crazy! Why!!!

I expect to get:

+============================================
nil
+============================================
============================================
strange string
============================================

It looks like Rails saves flash variable through action call.
Could Anyone help me?

Answer 1

Use Flash.now. Basic flash saves it for the next action.