Allow explicit placement of hidden id element for nested models.

[#3259 state:resolved]

Signed-off-by: Eloy Duran <eloy.de.enige@gmail.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/actionpack/lib/action_view/helpers/form_helper.rb b/actionpack/lib/action_view/helpers/form_helper.rb
index c46b39fc23..d0c66eda60 100644
--- a/actionpack/lib/action_view/helpers/form_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_helper.rb
@@ -963,7 +963,7 @@ module ActionView
         end
       end
 
-      (field_helpers - %w(label check_box radio_button fields_for)).each do |selector|
+      (field_helpers - %w(label check_box radio_button fields_for hidden_field)).each do |selector|
         src = <<-end_src
           def #{selector}(method, options = {})  # def text_field(method, options = {})
             @template.send(                      #   @template.send(
@@ -1022,6 +1022,11 @@ module ActionView
       def radio_button(method, tag_value, options = {})
         @template.radio_button(@object_name, method, tag_value, objectify_options(options))
       end
+      
+      def hidden_field(method, options = {})
+        @emitted_hidden_id = true if method == :id
+        @template.hidden_field(@object_name, method, objectify_options(options))
+      end
 
       def error_message_on(method, *args)
         @template.error_message_on(@object, method, *args)
@@ -1035,6 +1040,10 @@ module ActionView
         @template.submit_tag(value, options.reverse_merge(:id => "#{object_name}_submit"))
       end
 
+      def emitted_hidden_id?
+        @emitted_hidden_id
+      end
+
       private
         def objectify_options(options)
           @default_options.merge(options.merge(:object => @object))
@@ -1069,8 +1078,8 @@ module ActionView
             @template.fields_for(name, object, *args, &block)
           else
             @template.fields_for(name, object, *args) do |builder|
-              @template.concat builder.hidden_field(:id)
               block.call(builder)
+              @template.concat builder.hidden_field(:id) unless builder.emitted_hidden_id?
             end
           end
         end