check_box helper with :disabled => true generates disabled hidden field. fixes #1953

actionpack/CHANGELOG.md

 ## Rails 3.2.0 (unreleased) ##
 
+*   check_box helper with :disabled => true will generate a disabled hidden field to conform with the HTML convention where disabled fields are not submitted with the form.
+    This is a behavior change, previously the hidden tag had a value of the disabled checkbox.
+    *Tadas Tamosauskas*
+
 *   Add font_path helper method *Santiago Pastorino*
 
 *   Depends on rack ~> 1.4.0 *Santiago Pastorino*

actionpack/lib/action_view/helpers/form_helper.rb

@@ -1091,7 +1091,7 @@ def to_check_box_tag(options = {}, checked_value = "1", unchecked_value = "0")
         else
           add_default_name_and_id(options)
         end
-        hidden = tag("input", "name" => options["name"], "type" => "hidden", "value" => options['disabled'] && checked ? checked_value : unchecked_value)
+        hidden = tag("input", "name" => options["name"], "type" => "hidden", "value" => unchecked_value, "disabled" => options["disabled"])
         checkbox = tag("input", options)
         hidden + checkbox
       end

actionpack/test/template/form_helper_test.rb

@@ -386,11 +386,10 @@ def test_check_box_with_multiple_behavior
     )
   end
 
-
-  def test_checkbox_disabled_still_submits_checked_value
+  def test_checkbox_disabled_disables_hidden_field
     assert_dom_equal(
-      '<input name="post[secret]" type="hidden" value="1" /><input checked="checked" disabled="disabled" id="post_secret" name="post[secret]" type="checkbox" value="1" />',
-      check_box("post", "secret", { :disabled => :true })
+      '<input name="post[secret]" type="hidden" value="0" disabled="disabled"/><input checked="checked" disabled="disabled" id="post_secret" name="post[secret]" type="checkbox" value="1" />',
+      check_box("post", "secret", { :disabled => true })
     )
   end