1 files changed, 7 insertions, 4 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/flash.rb b/actionpack/lib/action_dispatch/middleware/flash.rb
index e90f8b9ce6..a7f95150a4 100644
--- a/actionpack/lib/action_dispatch/middleware/flash.rb
+++ b/actionpack/lib/action_dispatch/middleware/flash.rb
@@ -79,7 +79,7 @@ module ActionDispatch
     class FlashHash
       include Enumerable
 
-      def self.from_session_value(value)
+      def self.from_session_value(value) #:nodoc:
         flash = case value
                 when FlashHash # Rails 3.1, 3.2
                   new(value.instance_variable_get(:@flashes), value.instance_variable_get(:@used))
@@ -91,8 +91,11 @@ module ActionDispatch
 
         flash.tap(&:sweep)
       end
-
-      def to_session_value
+      
+      # Builds a hash containing the discarded values and the hashes
+      # representing the flashes.
+      # If there are no values in @flashes, returns nil.
+      def to_session_value #:nodoc:
         return nil if empty?
         {'discard' => @discard.to_a, 'flashes' => @flashes}
       end
@@ -132,7 +135,7 @@ module ActionDispatch
       end
 
       def key?(name)
-        @flashes.key? name
+        @flashes.key? name.to_s
       end
 
       def delete(key)