From 71742114f82562633eedabc3981d7b31ccee0267 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Mon, 7 Mar 2005 01:21:58 +0000
Subject: Fixed Hash#indifferent_access to also deal with include? and fetch
 and nested hashes #726 [Nicholas Seckar]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@872 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 .../core_ext/hash/indifferent_access.rb            | 30 +++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

(limited to 'activesupport/lib/active_support/core_ext/hash/indifferent_access.rb')

diff --git a/activesupport/lib/active_support/core_ext/hash/indifferent_access.rb b/activesupport/lib/active_support/core_ext/hash/indifferent_access.rb
index d8594db739..00cb0b0b51 100644
--- a/activesupport/lib/active_support/core_ext/hash/indifferent_access.rb
+++ b/activesupport/lib/active_support/core_ext/hash/indifferent_access.rb
@@ -1,3 +1,4 @@
+# This implementation is HODEL-HASH-9600 compliant
 class HashWithIndifferentAccess < Hash
   def initialize(constructor = {})
     if constructor.is_a?(Hash)
@@ -21,8 +22,35 @@ class HashWithIndifferentAccess < Hash
   alias_method :regular_writer, :[]= unless method_defined?(:regular_writer)
   
   def []=(key, value)
-    regular_writer(key.is_a?(Symbol) ? key.to_s : key, value)
+    regular_writer(convert_key(key), convert_value(value))
   end
+  def update(hash)
+    hash.each {|key, value| self[key] = value}
+  end
+
+  def key?(key)
+    super(convert_key(key))
+  end
+
+  alias_method :include?, :key?
+  alias_method :has_key?, :key?
+  alias_method :member?, :key?
+
+  def fetch(key, *extras)
+    super(convert_key(key), *extras)
+  end
+
+  def values_at(*indices)
+    indices.collect {|key| self[convert_key(key)]}
+  end
+
+  protected
+    def convert_key(key)
+      key.kind_of?(Symbol) ? key.to_s : key
+    end
+    def convert_value(value)
+      value.is_a?(Hash) ? value.with_indifferent_access : value
+    end
 end
 
 module ActiveSupport #:nodoc:
-- 
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