From a769b88819ac1ad1d89a1f9138bf1546091d3744 Mon Sep 17 00:00:00 2001
From: Jeremy Kemper <jeremy@bitsweat.net>
Date: Sun, 3 Sep 2006 15:59:18 +0000
Subject: button_to accepts :method so you can PUT and DELETE with it. Closes
 #6005.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4914 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 actionpack/CHANGELOG                             |  2 ++
 actionpack/lib/action_view/helpers/url_helper.rb | 23 ++++++++++++++++-------
 actionpack/test/template/url_helper_test.rb      | 14 ++++++++++++++
 3 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/actionpack/CHANGELOG b/actionpack/CHANGELOG
index cc1b883e5f..d6dda2d47a 100644
--- a/actionpack/CHANGELOG
+++ b/actionpack/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* button_to accepts :method so you can PUT and DELETE with it.  #6005 [Dan Webb]
+
 * Update sanitize text helper to strip plaintext tags, and <img src="javascript:bang">.  [Rick Olson]
 
 * Update routing documentation.  Closes #6017 [Nathan Witmer]
diff --git a/actionpack/lib/action_view/helpers/url_helper.rb b/actionpack/lib/action_view/helpers/url_helper.rb
index 77f217b2d4..42c28335d5 100644
--- a/actionpack/lib/action_view/helpers/url_helper.rb
+++ b/actionpack/lib/action_view/helpers/url_helper.rb
@@ -93,12 +93,14 @@ module ActionView
       # Example 2:
       #
       #   button_to "Destroy", { :action => 'destroy', :id => 3 },
-      #             :confirm => "Are you sure?"
+      #             :confirm => "Are you sure?", :method => :delete
       #
       # Generates the following HTML (sans formatting):
       #
       #   <form method="post" action="/feeds/destroy/3" class="button-to">
-      #     <div><input onclick="return confirm('Are you sure?');"
+      #     <div>
+      #       <input type="hidden" name="_method" value="delete" />
+      #       <input onclick="return confirm('Are you sure?');"
       #                 value="Destroy" type="submit" />
       #     </div>
       #   </form>
@@ -113,18 +115,25 @@ module ActionView
       def button_to(name, options = {}, html_options = nil)
         html_options = (html_options || {}).stringify_keys
         convert_boolean_attributes!(html_options, %w( disabled ))
-        
+
+        method_tag = ''
+        if (method = html_options.delete('method')) && %w{put delete}.include?(method.to_s)
+          method_tag = tag('input', :type => 'hidden', :name => '_method', :value => method.to_s)
+        end
+
+        form_method = method.to_s == 'get' ? 'get' : 'post'
+
         if confirm = html_options.delete("confirm")
           html_options["onclick"] = "return #{confirm_javascript_function(confirm)};"
         end
-        
+
         url = options.is_a?(String) ? options : url_for(options)
         name ||= url
-        
+
         html_options.merge!("type" => "submit", "value" => name)
 
-        "<form method=\"post\" action=\"#{h url}\" class=\"button-to\"><div>" +
-          tag("input", html_options) + "</div></form>"
+        "<form method=\"#{form_method}\" action=\"#{h url}\" class=\"button-to\"><div>" + 
+          method_tag + tag("input", html_options) + "</div></form>"
       end
 
 
diff --git a/actionpack/test/template/url_helper_test.rb b/actionpack/test/template/url_helper_test.rb
index 4d57bc65be..77ca8094f7 100644
--- a/actionpack/test/template/url_helper_test.rb
+++ b/actionpack/test/template/url_helper_test.rb
@@ -59,6 +59,20 @@ class UrlHelperTest < Test::Unit::TestCase
       button_to("Hello", "http://www.example.com", :disabled => true)
     )
   end
+  
+  def test_button_to_with_method_delete
+    assert_dom_equal(
+      "<form method=\"post\" action=\"http://www.example.com\" class=\"button-to\"><div><input type=\"hidden\" name=\"_method\" value=\"delete\" /><input type=\"submit\" value=\"Hello\" /></div></form>",
+      button_to("Hello", "http://www.example.com", :method => :delete)
+    )
+  end
+  
+  def test_button_to_with_method_get
+    assert_dom_equal(
+      "<form method=\"get\" action=\"http://www.example.com\" class=\"button-to\"><div><input type=\"submit\" value=\"Hello\" /></div></form>",
+      button_to("Hello", "http://www.example.com", :method => :get)
+    )
+  end
 
   def test_link_tag_with_straight_url
     assert_dom_equal "<a href=\"http://www.example.com\">Hello</a>", link_to("Hello", "http://www.example.com")
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