Railscasts - Looping Through Flash

#18

Apr 13, 2007

Looping Through Flash

Displaying flash messages in the layout can be a pain at times. In this episode you will learn an easy way to display any kind of flash message by looping through the hash.

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Download (6.3 MB, 1:44)

alternative download for iPod & Apple TV (2.7 MB, 1:44)

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<!-- layouts/application.rhtml -->
<% flash.each do |key, msg| %>
  <%= content_tag :div, msg, :id => key %>
<% end %>

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21 comments

1. Olek Poplavsky Jul 22, 2007 at 07:40

This is fine approach, but it will display errors mixed with warnings in no particular order, and that is not good in my opinion. I prefer messages sorted in order of decreasing severity: [:error, :warning, :notice, :message]

I have some code that does it, but I written it at the very beginning of studying ruby/rails, so I will not posit it here, it is not pretty ;)

2. Ryan Bates Jul 22, 2007 at 08:15

How about this: http://pastie.caboo.se/81153

3. meekish Jan 25, 2008 at 14:15

Here's a HAML version: http://pastie.textmate.org/143587

4. austin_web_developer Dec 08, 2008 at 06:42

Does anyone have the problem where the flash message stays on the page one reload more than it is supposed to?

So if you reload the page, the flash message is still there, but it goes away after a second reload.

Its a problem because if you carry out an action and you get an error, then do it again and get a success message, the previous message is displayed on the page at the same time as the current one.

5. Travis Roberts Dec 11, 2008 at 11:31

@austin_web_developer You can fix this by using flash.now[:notice] instead of flash[:notice]. I wrote a blog post explaining how the flash hash works: http://travisonrails.com/2008/08/17/Working-with-the-flash-hash"

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8. MBT shoes on sale Jan 14, 2010 at 10:25

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9. Bob Smith Jan 28, 2010 at 21:39

Having trouble with flash.. with flash[:notice] or the method shown here, any use of flash causes a 'stack level too deep' error. Is there any way to clear the flash ? I assume this would clear the error.

Bob

10. Lavryusya Feb 16, 2010 at 23:38

I am trying to download this awesome template and it doesn’t seem to be working . . .

11. Genyuha Feb 17, 2010 at 23:39

I think i have same problem too, but i see there is no admin or support to reply our comment :)

12. Gema Feb 18, 2010 at 06:36

Im read it with the lot of pleshure!

13. Apolya Feb 20, 2010 at 08:39

I think i have same problem too

14. Lyudasha Feb 21, 2010 at 05:27

i see there is no admin or support to reply our comment :)

15. Nastyusha Feb 22, 2010 at 11:16

Мда - действительно неплохо, лично мне очень даже понравилось!!!

16. Panyusha Feb 22, 2010 at 11:21

I like it. Thanks.

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Я был приятно удивлен, как автор легко пишет обо всем, что его интересует. В этом что-то есть!

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