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Stringify the incoming hash in FlashHash

Stringify the incoming as well to handle incoming symbol keys from
marshalled sessions
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commit a668beffd64106a1e1fedb71cc25eaaa11baf0c1 1 parent a6ce984
@guilleiguaran guilleiguaran authored chancancode committed
Showing with 3 additions and 1 deletion.
  1. +3 −1 actionpack/lib/action_dispatch/middleware/flash.rb
4 actionpack/lib/action_dispatch/middleware/flash.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/hash/keys'
module ActionDispatch
class Request < Rack::Request
# Access the contents of the flash. Use <tt>flash["notice"]</tt> to
@@ -94,7 +96,7 @@ def to_session_value
def initialize(flashes = {}, discard = []) #:nodoc:
@discard =
- @flashes = flashes
+ @flashes = flashes.stringify_keys
@now = nil

11 comments on commit a668bef


Just upgraded my app to the RC and noticed that Symbol keys changed to String keys. Is this expected behavior? It should be documented in the upgrading guide at least. This will break apps for sure.


@senny This won't break any app, as if we try to access notice like flash[:notice], then

def [](k)

will save you... :smile:


@kuldeepaggarwal it breaks apps that were iterating over the keys and checking for specific keys, for example:

<% flash.keys.each do |key, value| %>
    <span class="<%= (key == :notice) ? 'green' : 'red' %>"><%= value %></span>
<% end %>  

@kuldeepaggarwal flash access works but the keys need to be stored in some sort. Before they were symbols and now they are Strings. If you have applications that work with the internal flash representation (like the example of @guilleiguaran) you get different behavior than on Rails 4. I know there are many tutorials and even gems out there that suggest looping through the flash. So this is a compatibility issue.

It's easy to fix though so we need to make sure the user knows what the cause is an how to proceed.


Sorry I missed that...


@senny So should we update the guide?


i updated the upgrading guide. will take care of changelog/ release guide sync next week.

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