Rails: redirect_to with :error, but flash[:error] empty

Question

I'm trying to do a redirect while setting the flash[:error] value. (Rails 3.0.10)

In my view I have

<p id="error"><%= flash[:error] %></p>
<p id="notice"><%= flash[:notice] %></p>

If I do a redirect_to show_path, :notice => "ok" it works fine, but if I do redirect_to show_path, :error => "error" it doesn't show up.

what could I be missing?

score 249 · Accepted Answer · edited Dec 04 '19 at 15:26

249

As stated in the Rails API only :notice and :alert are by default applied as a flash hash value. If you need to set the :error value, you can do it like this:

redirect_to show_path, flash: { error: "Insufficient rights!" }

edited Dec 04 '19 at 15:26

Bijan

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answered Jan 09 '12 at 13:18

Tarnschaf

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4

For clarity: `redirect_to(show_path, {:flash => { :error => "Insufficient rights!" }})`. This format is needed if you want to create show_path with url options. – spyle Apr 16 '13 at 20:00
2

That worked for me too, I just wonder what the thought was behind only notice/alert being in the flash hash – jbnunn Aug 16 '13 at 22:31
2

Worked in Rails 5 – Richard Peck Oct 28 '16 at 15:09
1

You can move away from ruby 1.9 format to: `redirect_to(show_path, flash: { error: "Insufficient rights!" })` – mmsilviu Oct 24 '18 at 14:42

score 17 · Answer 2 · edited May 04 '14 at 16:45

17

If you are having problem to keep the flash after redirecting to another path, then use this.

flash.keep

in your method, before redirecting.

edited May 04 '14 at 16:45

halfdan

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answered Sep 09 '12 at 16:47

Ramiz Raja

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I just get the following shown in the directed page: ```# #``` – Hengjie Oct 01 '12 at 06:31
It seems that it not the answer of the question but it was the solution of my problem! – Claudio Shigueo Watanabe Mar 27 '14 at 03:51

score 0 · Answer 3 · answered Jul 11 '22 at 09:54

controller.rb

flash[:sucess] =  "Your sucess message"
redirect_to action: :index

layout.html

<% if flash[:sucess] %>
    <div class="alert alert-solid-success alert-bold" role="alert">
        <div class="alert-text"><%= sanitize(flash[:sucess]) %></div>
    </div>
<% end %>

score -1 · Answer 4 · answered Mar 26 '14 at 19:30

To truly follow the PRG pattern, I wonder if this project works well

https://github.com/tommeier/rails-prg

I can't stand apps not following PRG as a user.....I have been 6 pages after a POST and hit the back button to get back to 10 pages ago get blocked by "do you want to repost this crap"....no, of course not. I just want to get back to a page I had seen before.

non-PRG apps are very very annoying to users.

Rails: redirect_to with :error, but flash[:error] empty

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