Added Hash#stringify_keys and Hash#stringify_keys!

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@586 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 19 insertions, 0 deletions

diff --git a/activesupport/lib/core_ext/hash/keys.rb b/activesupport/lib/core_ext/hash/keys.rb
index 4dd982337c..3c301c6fa6 100644
--- a/activesupport/lib/core_ext/hash/keys.rb
+++ b/activesupport/lib/core_ext/hash/keys.rb
@@ -2,6 +2,25 @@ module ActiveSupport #:nodoc:
   module CoreExtensions #:nodoc:
     module Hash #:nodoc:
       module Keys
+        # Return a new hash with all keys converted to strings.
+        def stringify_keys
+          inject({}) do |options, (key, value)|
+            options[key.to_s] = value
+            options
+          end
+        end
+
+        # Destructively convert all keys to strings.
+        def stringify_keys!
+          keys.each do |key|
+            unless key.is_a?(String)
+              self[key.to_s] = self[key]
+              delete(key)
+            end
+          end
+          self
+        end
+
         # Return a new hash with all keys converted to symbols.
         def symbolize_keys
           inject({}) do |options, (key, value)|