Set flash in application controller

app/controllers/application_controller.rb

@@ -1,3 +1,14 @@
 class ApplicationController < ActionController::Base
   protect_from_forgery
+  before_filter :set_flash_from_params
+
+protected
+
+  def set_flash_from_params
+    if params[:flash]
+      params[:flash].each do |key, message|
+        flash.now[key.to_sym] = message
+      end
+    end
+  end
 end

app/controllers/info_window_controller.rb

@@ -1,11 +1,6 @@
 class InfoWindowController < ApplicationController
   def index
     @hydrant = Hydrant.find_by_id(params[:hydrant_id])
-    if params[:flash]
-      params[:flash].each do |key, message|
-        flash.now[key.to_sym] = message
-      end
-    end
     if @hydrant.adopted?
       if user_signed_in? && current_user.id == @hydrant.user_id
         render("users/thank_you")