Ajax flash message in ruby on rails

Question

I'm trying to show a flash message and render it with Ajax, but the message does not seem to be appearing until after I refresh the page.

Here's my create.rjs file:

page.insert_html :top, :feed_items, :partial => 'shared/feed_item', :object => @micropost
page.replace_html :user_info, pluralize(current_user.microposts.count, "micropost")
page[:micropost_form].reset
page.replace_html :notice, flash[:notice]
flash.discard

Here's the relevant part of my application layout view:

<div id= "notice"><% flash.each do |key, value| %>
   <div class="flash <%= key %>"><%= value %></div>
<% end %></div>

And here's the relevant part of my micropost controller:

class MicropostsController < ApplicationController
  before_filter :authenticate, :only => [:create, :destroy]
  before_filter :authorized_user, :only => :destroy

  def create
    @micropost  = current_user.microposts.build(params[:micropost])
    respond_to do |format|
      if @micropost.save
        flash[:success] = "Micropost created!"

        format.html { redirect_to root_path }
        format.js   
      else
        @feed_items = []
        render 'pages/home'
      end  
    end
  end

So why isn't the flash message showing up right away?

Look at this answer for a good solution to this: stackoverflow.com/questions/366311/… — Peyman
– Peyman, Commented Oct 30, 2011 at 3:44
Not sure if it'll do exactly what you want, but try using flash.now[:success] — Kenny Bania
– Kenny Bania, Commented Aug 7, 2012 at 15:51

DGM · Accepted Answer · 2014-03-24 13:55:19Z

8

Flash messages by design are stored in the session until the next page load. In the case of ajax, don't use flash. For one thing, the div to replace the message into may not exist, so you need to add that to your page as a container to add to. Second, just do it from a regular variable, not flash.

A regular variable would be:

@message = "Micropost created!"

instead of the flash[:success]

The js view would use this variable instead of flash.

edited Mar 24, 2014 at 13:55

answered Mar 3, 2011 at 23:43

DGM

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1 Comment

Justin Meltzer Over a year ago

I think I did add the div, but what would using a regular variable for this look like?

Pravin · Accepted Answer · 2011-03-04 09:52:45Z

1

Instead of page.replace_html :notice, flash[:notice]
Try this page.replace_html :notice, "Some info to flash"

answered Mar 4, 2011 at 9:52

Pravin

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