Add config.default_method_for_update to support PATCH

PATCH is the correct HTML verb to map to the #update action. The
semantics for PATCH allows for partial updates, whereas PUT requires a
complete replacement.

Changes:
* adds config.default_method_for_update you can set to :patch
* optionally use PATCH instead of PUT in resource routes and forms
* adds the #patch verb to routes to detect PATCH requests
* adds #patch? to Request
* changes documentation and comments to indicate support for PATCH

This change maintains complete backwards compatibility by keeping :put
as the default for config.default_method_for_update.

1 files changed, 3 insertions, 3 deletions

diff --git a/activeresource/lib/active_resource/http_mock.rb b/activeresource/lib/active_resource/http_mock.rb
index 666b961f87..820b178d4b 100644
--- a/activeresource/lib/active_resource/http_mock.rb
+++ b/activeresource/lib/active_resource/http_mock.rb
@@ -15,7 +15,7 @@ module ActiveResource
   #
   #   mock.http_method(path, request_headers = {}, body = nil, status = 200, response_headers = {})
   #
-  # * <tt>http_method</tt> - The HTTP method to listen for. This can be +get+, +post+, +put+, +delete+ or
+  # * <tt>http_method</tt> - The HTTP method to listen for. This can be +get+, +post+, +patch+, +put+, +delete+ or
   #   +head+.
   # * <tt>path</tt> - A string, starting with a "/", defining the URI that is expected to be
   #   called.
@@ -55,7 +55,7 @@ module ActiveResource
         @responses = responses
       end
 
-      [ :post, :put, :get, :delete, :head ].each do |method|
+      [ :post, :put, :patch, :get, :delete, :head ].each do |method|
         # def post(path, request_headers = {}, body = nil, status = 200, response_headers = {})
         #   @responses[Request.new(:post, path, nil, request_headers)] = Response.new(body || "", status, response_headers)
         # end
@@ -217,7 +217,7 @@ module ActiveResource
     end
 
     # body?       methods
-    { true  => %w(post put),
+    { true  => %w(post patch put),
       false => %w(get delete head) }.each do |has_body, methods|
       methods.each do |method|
         # def post(path, body, headers)