deprecate form_for(symbol_or_string, ...) in favor of :object_name option

actionpack/lib/action_view/helpers/form_helper.rb

@@ -300,15 +300,16 @@ def form_for(record_or_name_or_array, *args, &proc)
 
         case record_or_name_or_array
         when String, Symbol
+          ActiveSupport::Deprecation.warn("Use the option :object_name => ... instead of a Symbol or String as a the first argument", caller)
           object_name = record_or_name_or_array
         when Array
           object = record_or_name_or_array.last
-          object_name = ActionController::RecordIdentifier.singular_class_name(object)
+          object_name = options[:object_name] || ActionController::RecordIdentifier.singular_class_name(object)
           apply_form_for_options!(record_or_name_or_array, options)
           args.unshift object
         else
           object = record_or_name_or_array
-          object_name = ActionController::RecordIdentifier.singular_class_name(object)
+          object_name = options[:object_name] || ActionController::RecordIdentifier.singular_class_name(object)
           apply_form_for_options!([object], options)
           args.unshift object
         end
@@ -326,9 +327,13 @@ def apply_form_for_options!(object_or_array, options) #:nodoc:
 
         html_options =
           if object.respond_to?(:persisted?) && object.persisted?
-            { :class  => dom_class(object, :edit), :id => dom_id(object, :edit), :method => :put }
+            { :class  => options[:object_name] ? "#{options[:object_name]}_edit" : dom_class(object, :edit),
+              :id => options[:object_name] ? "#{options[:object_name]}_edit" : dom_id(object, :edit),
+              :method => :put }
           else
-            { :class  => dom_class(object, :new),  :id => dom_id(object), :method => :post }
+            { :class  => options[:object_name] ? "#{options[:object_name]}_new" : dom_class(object, :new),
+              :id => options[:object_name] ? "#{options[:object_name]}_new" : dom_id(object),
+              :method => :post }
           end
 
         options[:html] ||= {}

actionpack/test/template/form_helper_test.rb

@@ -416,12 +416,14 @@ def test_auto_index
   end
 
   def test_form_for
-    form_for(:post, @post, :html => { :id => 'create-post' }) do |f|
-      concat f.label(:title)
-      concat f.text_field(:title)
-      concat f.text_area(:body)
-      concat f.check_box(:secret)
-      concat f.submit('Create post')
+    assert_deprecated do
+      form_for(:post, @post, :html => { :id => 'create-post' }) do |f|
+        concat f.label(:title)
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+        concat f.submit('Create post')
+      end
     end
 
     expected =
@@ -437,11 +439,35 @@ def test_form_for
     assert_dom_equal expected, output_buffer
   end
 
-  def test_form_for_with_method
-    form_for(:post, @post, :html => { :id => 'create-post', :method => :put }) do |f|
+  def test_form_for_with_symbol_object_name
+    form_for(@post, :object_name => "other_name", :html => { :id => 'create-post' }) do |f|
+      concat f.label(:title)
       concat f.text_field(:title)
       concat f.text_area(:body)
       concat f.check_box(:secret)
+      concat f.submit('Create post')
+    end
+
+    expected =
+      "<form class='other_name_edit' method='post' action='/posts/123' id='create-post'>" +
+      "<div style='margin:0;padding:0;display:inline'><input name='_method' value='put' type='hidden' /></div>" +
+      "<label for='other_name_title'>Title</label>" +
+      "<input name='other_name[title]' size='30' id='other_name_title' value='Hello World' type='text' />" +
+      "<textarea name='other_name[body]' id='other_name_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
+      "<input name='other_name[secret]' value='0' type='hidden' />" +
+      "<input name='other_name[secret]' checked='checked' id='other_name_secret' value='1' type='checkbox' />" + 
+      "<input name='commit' id='other_name_submit' value='Create post' type='submit' /></form>"
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_form_for_with_method
+    assert_deprecated do
+      form_for(:post, @post, :html => { :id => 'create-post', :method => :put }) do |f|
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+      end
     end
 
     expected =
@@ -457,10 +483,12 @@ def test_form_for_with_method
   end
 
   def test_form_for_with_remote
-    form_for(:post, @post, :remote => true, :html => { :id => 'create-post', :method => :put }) do |f|
-      concat f.text_field(:title)
-      concat f.text_area(:body)
-      concat f.check_box(:secret)
+    assert_deprecated do
+      form_for(:post, @post, :remote => true, :html => { :id => 'create-post', :method => :put }) do |f|
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+      end
     end
 
     expected =
@@ -476,10 +504,12 @@ def test_form_for_with_remote
   end
 
   def test_form_for_without_object
-    form_for(:post, :html => { :id => 'create-post' }) do |f|
-      concat f.text_field(:title)
-      concat f.text_area(:body)
-      concat f.check_box(:secret)
+    assert_deprecated do
+      form_for(:post, :html => { :id => 'create-post' }) do |f|
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+      end
     end
 
     expected =
@@ -494,16 +524,18 @@ def test_form_for_without_object
   end
 
   def test_form_for_with_index
-    form_for("post[]", @post) do |f|
-      concat f.label(:title)
-      concat f.text_field(:title)
-      concat f.text_area(:body)
-      concat f.check_box(:secret)
+    assert_deprecated do
+      form_for("post[]", @post) do |f|
+        concat f.label(:title)
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+      end
     end
 
     expected =
       "<form action='http://www.example.com' method='post'>" +
-      "<label for=\"post_123_title\">Title</label>" +
+      "<label for='post_123_title'>Title</label>" +
       "<input name='post[123][title]' size='30' type='text' id='post_123_title' value='Hello World' />" +
       "<textarea name='post[123][body]' id='post_123_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='post[123][secret]' type='hidden' value='0' />" +
@@ -514,10 +546,12 @@ def test_form_for_with_index
   end
 
   def test_form_for_with_nil_index_option_override
-    form_for("post[]", @post, :index => nil) do |f|
-      concat f.text_field(:title)
-      concat f.text_area(:body)
-      concat f.check_box(:secret)
+    assert_deprecated do
+      form_for("post[]", @post, :index => nil) do |f|
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+      end
     end
 
     expected =
@@ -535,8 +569,10 @@ def test_submit_with_object_as_new_record_and_locale_strings
     old_locale, I18n.locale = I18n.locale, :submit
 
     @post.persisted = false
-    form_for(:post, @post) do |f|
-      concat f.submit
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.submit
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -550,8 +586,10 @@ def test_submit_with_object_as_new_record_and_locale_strings
   def test_submit_with_object_as_existing_record_and_locale_strings
     old_locale, I18n.locale = I18n.locale, :submit
 
-    form_for(:post, @post) do |f|
-      concat f.submit
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.submit
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -565,8 +603,10 @@ def test_submit_with_object_as_existing_record_and_locale_strings
   def test_submit_without_object_and_locale_strings
     old_locale, I18n.locale = I18n.locale, :submit
 
-    form_for(:post) do |f|
-      concat f.submit :class => "extra"
+    assert_deprecated do
+      form_for(:post) do |f|
+        concat f.submit :class => "extra"
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -580,8 +620,10 @@ def test_submit_without_object_and_locale_strings
   def test_submit_with_object_and_nested_lookup
     old_locale, I18n.locale = I18n.locale, :submit
 
-    form_for(:another_post, @post) do |f|
-      concat f.submit
+    assert_deprecated do
+      form_for(:another_post, @post) do |f|
+        concat f.submit
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -593,10 +635,12 @@ def test_submit_with_object_and_nested_lookup
   end
 
   def test_nested_fields_for
-    form_for(:post, @post) do |f|
-      concat f.fields_for(:comment, @post) { |c|
-        concat c.text_field(:title)
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.fields_for(:comment, @post) { |c|
+          concat c.text_field(:title)
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -607,11 +651,13 @@ def test_nested_fields_for
   end
 
   def test_nested_fields_for_with_nested_collections
-    form_for('post[]', @post) do |f|
-      concat f.text_field(:title)
-      concat f.fields_for('comment[]', @comment) { |c|
-        concat c.text_field(:name)
-      }
+    assert_deprecated do
+      form_for('post[]', @post) do |f|
+        concat f.text_field(:title)
+        concat f.fields_for('comment[]', @comment) { |c|
+          concat c.text_field(:name)
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -623,11 +669,13 @@ def test_nested_fields_for_with_nested_collections
   end
 
   def test_nested_fields_for_with_index_and_parent_fields
-    form_for('post', @post, :index => 1) do |c|
-      concat c.text_field(:title)
-      concat c.fields_for('comment', @comment, :index => 1) { |r|
-        concat r.text_field(:name)
-      }
+    assert_deprecated do
+      form_for('post', @post, :index => 1) do |c|
+        concat c.text_field(:title)
+        concat c.fields_for('comment', @comment, :index => 1) { |r|
+          concat r.text_field(:name)
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -639,10 +687,12 @@ def test_nested_fields_for_with_index_and_parent_fields
   end
 
   def test_form_for_with_index_and_nested_fields_for
-    output_buffer = form_for(:post, @post, :index => 1) do |f|
-      concat f.fields_for(:comment, @post) { |c|
-        concat c.text_field(:title)
-      }
+    assert_deprecated do
+      output_buffer = form_for(:post, @post, :index => 1) do |f|
+        concat f.fields_for(:comment, @post) { |c|
+          concat c.text_field(:title)
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -653,10 +703,12 @@ def test_form_for_with_index_and_nested_fields_for
   end
 
   def test_nested_fields_for_with_index_on_both
-    form_for(:post, @post, :index => 1) do |f|
-      concat f.fields_for(:comment, @post, :index => 5) { |c|
-        concat c.text_field(:title)
-      }
+    assert_deprecated do
+      form_for(:post, @post, :index => 1) do |f|
+        concat f.fields_for(:comment, @post, :index => 5) { |c|
+          concat c.text_field(:title)
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -667,10 +719,12 @@ def test_nested_fields_for_with_index_on_both
   end
 
   def test_nested_fields_for_with_auto_index
-    form_for("post[]", @post) do |f|
-      concat f.fields_for(:comment, @post) { |c|
-        concat c.text_field(:title)
-      }
+    assert_deprecated do
+      form_for("post[]", @post) do |f|
+        concat f.fields_for(:comment, @post) { |c|
+          concat c.text_field(:title)
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -681,10 +735,12 @@ def test_nested_fields_for_with_auto_index
   end
 
   def test_nested_fields_for_with_index_radio_button
-    form_for(:post, @post) do |f|
-      concat f.fields_for(:comment, @post, :index => 5) { |c|
-        concat c.radio_button(:title, "hello")
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.fields_for(:comment, @post, :index => 5) { |c|
+          concat c.radio_button(:title, "hello")
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -695,10 +751,12 @@ def test_nested_fields_for_with_index_radio_button
   end
 
   def test_nested_fields_for_with_auto_index_on_both
-    form_for("post[]", @post) do |f|
-      concat f.fields_for("comment[]", @post) { |c|
-        concat c.text_field(:title)
-      }
+    assert_deprecated do
+      form_for("post[]", @post) do |f|
+        concat f.fields_for("comment[]", @post) { |c|
+          concat c.text_field(:title)
+        }
+      end
     end
 
     expected = "<form action='http://www.example.com' method='post'>" +
@@ -709,36 +767,40 @@ def test_nested_fields_for_with_auto_index_on_both
   end
 
   def test_nested_fields_for_with_index_and_auto_index
-    output_buffer = form_for("post[]", @post) do |f|
-      concat f.fields_for(:comment, @post, :index => 5) { |c|
-        concat c.text_field(:title)
-      }
-    end
+    assert_deprecated do
+      output_buffer = form_for("post[]", @post) do |f|
+        concat f.fields_for(:comment, @post, :index => 5) { |c|
+          concat c.text_field(:title)
+        }
+      end
 
-    output_buffer << form_for(:post, @post, :index => 1) do |f|
-      concat f.fields_for("comment[]", @post) { |c|
-        concat c.text_field(:title)
-      }
-    end
+      output_buffer << form_for(:post, @post, :index => 1) do |f|
+        concat f.fields_for("comment[]", @post) { |c|
+          concat c.text_field(:title)
+        }
+      end
 
-    expected = "<form action='http://www.example.com' method='post'>" +
-               "<input name='post[123][comment][5][title]' size='30' type='text' id='post_123_comment_5_title' value='Hello World' />" +
-               "</form>" +
-               "<form action='http://www.example.com' method='post'>" +
-               "<input name='post[1][comment][123][title]' size='30' type='text' id='post_1_comment_123_title' value='Hello World' />" +
-               "</form>"
+      expected = "<form action='http://www.example.com' method='post'>" +
+                 "<input name='post[123][comment][5][title]' size='30' type='text' id='post_123_comment_5_title' value='Hello World' />" +
+                 "</form>" +
+                 "<form action='http://www.example.com' method='post'>" +
+                 "<input name='post[1][comment][123][title]' size='30' type='text' id='post_1_comment_123_title' value='Hello World' />" +
+                 "</form>"
 
-    assert_dom_equal expected, output_buffer
+      assert_dom_equal expected, output_buffer
+    end
   end
 
   def test_nested_fields_for_with_a_new_record_on_a_nested_attributes_one_to_one_association
     @post.author = Author.new
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      concat f.fields_for(:author) { |af|
-        concat af.text_field(:name)
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        concat f.fields_for(:author) { |af|
+          concat af.text_field(:name)
+        }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -750,10 +812,12 @@ def test_nested_fields_for_with_a_new_record_on_a_nested_attributes_one_to_one_a
   end
 
   def test_nested_fields_for_with_explicitly_passed_object_on_a_nested_attributes_one_to_one_association
-    form_for(:post, @post) do |f|
-      f.fields_for(:author, Author.new(123)) do |af|
-        assert_not_nil af.object
-        assert_equal 123, af.object.id
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        f.fields_for(:author, Author.new(123)) do |af|
+          assert_not_nil af.object
+          assert_equal 123, af.object.id
+        end
       end
     end
   end
@@ -761,11 +825,13 @@ def test_nested_fields_for_with_explicitly_passed_object_on_a_nested_attributes_
   def test_nested_fields_for_with_an_existing_record_on_a_nested_attributes_one_to_one_association
     @post.author = Author.new(321)
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      concat f.fields_for(:author) { |af|
-        concat af.text_field(:name)
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        concat f.fields_for(:author) { |af|
+          concat af.text_field(:name)
+        }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -780,12 +846,14 @@ def test_nested_fields_for_with_an_existing_record_on_a_nested_attributes_one_to
   def test_nested_fields_for_with_existing_records_on_a_nested_attributes_one_to_one_association_with_explicit_hidden_field_placement
     @post.author = Author.new(321)
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      concat f.fields_for(:author) { |af|
-        concat af.hidden_field(:id)
-        concat af.text_field(:name)
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        concat f.fields_for(:author) { |af|
+          concat af.hidden_field(:id)
+          concat af.text_field(:name)
+        }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -800,12 +868,14 @@ def test_nested_fields_for_with_existing_records_on_a_nested_attributes_one_to_o
   def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association
     @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      @post.comments.each do |comment|
-        concat f.fields_for(:comments, comment) { |cf|
-          concat cf.text_field(:name)
-        }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        @post.comments.each do |comment|
+          concat f.fields_for(:comments, comment) { |cf|
+            concat cf.text_field(:name)
+          }
+        end
       end
     end
 
@@ -823,13 +893,15 @@ def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collecti
   def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association_with_explicit_hidden_field_placement
     @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      @post.comments.each do |comment|
-        concat f.fields_for(:comments, comment) { |cf|
-          concat cf.hidden_field(:id)
-          concat cf.text_field(:name)
-        }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        @post.comments.each do |comment|
+          concat f.fields_for(:comments, comment) { |cf|
+            concat cf.hidden_field(:id)
+            concat cf.text_field(:name)
+          }
+        end
       end
     end
 
@@ -847,12 +919,14 @@ def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collecti
   def test_nested_fields_for_with_new_records_on_a_nested_attributes_collection_association
     @post.comments = [Comment.new, Comment.new]
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      @post.comments.each do |comment|
-        concat f.fields_for(:comments, comment) { |cf|
-          concat cf.text_field(:name)
-        }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        @post.comments.each do |comment|
+          concat f.fields_for(:comments, comment) { |cf|
+            concat cf.text_field(:name)
+          }
+        end
       end
     end
 
@@ -868,12 +942,14 @@ def test_nested_fields_for_with_new_records_on_a_nested_attributes_collection_as
   def test_nested_fields_for_with_existing_and_new_records_on_a_nested_attributes_collection_association
     @post.comments = [Comment.new(321), Comment.new]
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      @post.comments.each do |comment|
-        concat f.fields_for(:comments, comment) { |cf|
-          concat cf.text_field(:name)
-        }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        @post.comments.each do |comment|
+          concat f.fields_for(:comments, comment) { |cf|
+            concat cf.text_field(:name)
+          }
+        end
       end
     end
 
@@ -888,10 +964,12 @@ def test_nested_fields_for_with_existing_and_new_records_on_a_nested_attributes_
   end
 
   def test_nested_fields_for_with_an_empty_supplied_attributes_collection
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      f.fields_for(:comments, []) do |cf|
-        concat cf.text_field(:name)
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        f.fields_for(:comments, []) do |cf|
+          concat cf.text_field(:name)
+        end
       end
     end
 
@@ -905,11 +983,13 @@ def test_nested_fields_for_with_an_empty_supplied_attributes_collection
   def test_nested_fields_for_with_existing_records_on_a_supplied_nested_attributes_collection
     @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      concat f.fields_for(:comments, @post.comments) { |cf|
-        concat cf.text_field(:name)
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        concat f.fields_for(:comments, @post.comments) { |cf|
+          concat cf.text_field(:name)
+        }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -927,11 +1007,13 @@ def test_nested_fields_for_with_existing_records_on_a_supplied_nested_attributes
     comments = Array.new(2) { |id| Comment.new(id + 1) }
     @post.comments = []
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      concat f.fields_for(:comments, comments) { |cf|
-        concat cf.text_field(:name)
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        concat f.fields_for(:comments, comments) { |cf|
+          concat cf.text_field(:name)
+        }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -949,12 +1031,14 @@ def test_nested_fields_for_on_a_nested_attributes_collection_association_yields_
     @post.comments = [Comment.new(321), Comment.new]
     yielded_comments = []
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      concat f.fields_for(:comments) { |cf|
-        concat cf.text_field(:name)
-        yielded_comments << cf.object
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        concat f.fields_for(:comments) { |cf|
+          concat cf.text_field(:name)
+          yielded_comments << cf.object
+        }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -971,10 +1055,12 @@ def test_nested_fields_for_on_a_nested_attributes_collection_association_yields_
   def test_nested_fields_for_with_child_index_option_override_on_a_nested_attributes_collection_association
     @post.comments = []
 
-    form_for(:post, @post) do |f|
-      concat f.fields_for(:comments, Comment.new(321), :child_index => 'abc') { |cf|
-        concat cf.text_field(:name)
-      }
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.fields_for(:comments, Comment.new(321), :child_index => 'abc') { |cf|
+          concat cf.text_field(:name)
+        }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -991,25 +1077,28 @@ def test_nested_fields_uses_unique_indices_for_different_collection_associations
     @post.comments[0].relevances = []
     @post.tags[0].relevances = []
     @post.tags[1].relevances = []
-    form_for(:post, @post) do |f|
-      concat f.fields_for(:comments, @post.comments[0]) { |cf|
-        concat cf.text_field(:name)
-        concat cf.fields_for(:relevances, CommentRelevance.new(314)) { |crf|
-          concat crf.text_field(:value)
+
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.fields_for(:comments, @post.comments[0]) { |cf|
+          concat cf.text_field(:name)
+          concat cf.fields_for(:relevances, CommentRelevance.new(314)) { |crf|
+            concat crf.text_field(:value)
+          }
         }
-      }
-      concat f.fields_for(:tags, @post.tags[0]) { |tf|
-        concat tf.text_field(:value)
-        concat tf.fields_for(:relevances, TagRelevance.new(3141)) { |trf|
-          concat trf.text_field(:value)
+        concat f.fields_for(:tags, @post.tags[0]) { |tf|
+          concat tf.text_field(:value)
+          concat tf.fields_for(:relevances, TagRelevance.new(3141)) { |trf|
+            concat trf.text_field(:value)
+          }
         }
-      }
-      concat f.fields_for('tags', @post.tags[1]) { |tf|
-        concat tf.text_field(:value)
-        concat tf.fields_for(:relevances, TagRelevance.new(31415)) { |trf|
-          concat trf.text_field(:value)
+        concat f.fields_for('tags', @post.tags[1]) { |tf|
+          concat tf.text_field(:value)
+          concat tf.fields_for(:relevances, TagRelevance.new(31415)) { |trf|
+            concat trf.text_field(:value)
+          }
         }
-      }
+      end
     end
 
     expected = '<form action="http://www.example.com" method="post">' +
@@ -1153,13 +1242,15 @@ def test_form_builder_does_not_have_form_for_method
   end
 
   def test_form_for_and_fields_for
-    form_for(:post, @post, :html => { :id => 'create-post' }) do |post_form|
-      concat post_form.text_field(:title)
-      concat post_form.text_area(:body)
+    assert_deprecated do
+      form_for(:post, @post, :html => { :id => 'create-post' }) do |post_form|
+        concat post_form.text_field(:title)
+        concat post_form.text_area(:body)
 
-      concat fields_for(:parent_post, @post) { |parent_fields|
-        concat parent_fields.check_box(:secret)
-      }
+        concat fields_for(:parent_post, @post) { |parent_fields|
+          concat parent_fields.check_box(:secret)
+        }
+      end
     end
 
     expected =
@@ -1174,13 +1265,15 @@ def test_form_for_and_fields_for
   end
 
   def test_form_for_and_fields_for_with_object
-    form_for(:post, @post, :html => { :id => 'create-post' }) do |post_form|
-      concat post_form.text_field(:title)
-      concat post_form.text_area(:body)
+    assert_deprecated do
+      form_for(:post, @post, :html => { :id => 'create-post' }) do |post_form|
+        concat post_form.text_field(:title)
+        concat post_form.text_area(:body)
 
-      concat post_form.fields_for(@comment) { |comment_fields|
-        concat comment_fields.text_field(:name)
-      }
+        concat post_form.fields_for(@comment) { |comment_fields|
+          concat comment_fields.text_field(:name)
+        }
+      end
     end
 
     expected =
@@ -1205,10 +1298,12 @@ def #{selector}(field, *args, &proc)
   end
 
   def test_form_for_with_labelled_builder
-    form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-      concat f.text_field(:title)
-      concat f.text_area(:body)
-      concat f.check_box(:secret)
+    assert_deprecated do
+      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+      end
     end
 
     expected =
@@ -1225,10 +1320,12 @@ def test_default_form_builder
     old_default_form_builder, ActionView::Base.default_form_builder =
       ActionView::Base.default_form_builder, LabelledFormBuilder
 
-    form_for(:post, @post) do |f|
-      concat f.text_field(:title)
-      concat f.text_area(:body)
-      concat f.check_box(:secret)
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+        concat f.text_field(:title)
+        concat f.text_area(:body)
+        concat f.check_box(:secret)
+      end
     end
 
     expected =
@@ -1244,9 +1341,11 @@ def test_default_form_builder
   end
 
   def test_default_form_builder_with_active_record_helpers
-    form_for(:post, @post) do |f|
-       concat f.error_message_on('author_name')
-       concat f.error_messages
+    assert_deprecated do
+      form_for(:post, @post) do |f|
+         concat f.error_message_on('author_name')
+         concat f.error_messages
+      end
     end
 
     expected = %(<form action='http://www.example.com' method='post'>) +
@@ -1262,9 +1361,11 @@ def test_default_form_builder_no_instance_variable
     post = @post
     @post = nil
 
-    form_for(:post, post) do |f|
-       concat f.error_message_on('author_name')
-       concat f.error_messages
+    assert_deprecated do
+      form_for(:post, post) do |f|
+         concat f.error_message_on('author_name')
+         concat f.error_messages
+      end
     end
 
     expected = %(<form action='http://www.example.com' method='post'>) +
@@ -1294,10 +1395,12 @@ def test_fields_for_with_labelled_builder
   def test_form_for_with_labelled_builder_with_nested_fields_for_without_options_hash
     klass = nil
 
-    form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-      f.fields_for(:comments, Comment.new) do |nested_fields|
-        klass = nested_fields.class
-        ''
+    assert_deprecated do
+      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
+        f.fields_for(:comments, Comment.new) do |nested_fields|
+          klass = nested_fields.class
+          ''
+        end
       end
     end
 
@@ -1307,10 +1410,12 @@ def test_form_for_with_labelled_builder_with_nested_fields_for_without_options_h
   def test_form_for_with_labelled_builder_with_nested_fields_for_with_options_hash
     klass = nil
 
-    form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-      f.fields_for(:comments, Comment.new, :index => 'foo') do |nested_fields|
-        klass = nested_fields.class
-        ''
+    assert_deprecated do
+      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
+        f.fields_for(:comments, Comment.new, :index => 'foo') do |nested_fields|
+          klass = nested_fields.class
+          ''
+        end
       end
     end
 
@@ -1322,10 +1427,12 @@ class LabelledFormBuilderSubclass < LabelledFormBuilder; end
   def test_form_for_with_labelled_builder_with_nested_fields_for_with_custom_builder
     klass = nil
 
-    form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-      f.fields_for(:comments, Comment.new, :builder => LabelledFormBuilderSubclass) do |nested_fields|
-        klass = nested_fields.class
-        ''
+    assert_deprecated do
+      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
+        f.fields_for(:comments, Comment.new, :builder => LabelledFormBuilderSubclass) do |nested_fields|
+          klass = nested_fields.class
+          ''
+        end
       end
     end
 
@@ -1333,27 +1440,35 @@ def test_form_for_with_labelled_builder_with_nested_fields_for_with_custom_build
   end
 
   def test_form_for_with_html_options_adds_options_to_form_tag
-    form_for(:post, @post, :html => {:id => 'some_form', :class => 'some_class'}) do |f| end
+    assert_deprecated do
+      form_for(:post, @post, :html => {:id => 'some_form', :class => 'some_class'}) do |f| end
+    end
     expected = "<form action=\"http://www.example.com\" class=\"some_class\" id=\"some_form\" method=\"post\"></form>"
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_form_for_with_string_url_option
-    form_for(:post, @post, :url => 'http://www.otherdomain.com') do |f| end
+    assert_deprecated do
+      form_for(:post, @post, :url => 'http://www.otherdomain.com') do |f| end
+    end
 
     assert_equal '<form action="http://www.otherdomain.com" method="post"></form>', output_buffer
   end
 
   def test_form_for_with_hash_url_option
-    form_for(:post, @post, :url => {:controller => 'controller', :action => 'action'}) do |f| end
+    assert_deprecated do
+      form_for(:post, @post, :url => {:controller => 'controller', :action => 'action'}) do |f| end
+    end
 
     assert_equal 'controller', @url_for_options[:controller]
     assert_equal 'action', @url_for_options[:action]
   end
 
   def test_form_for_with_record_url_option
-    form_for(:post, @post, :url => @post) do |f| end
+    assert_deprecated do
+      form_for(:post, @post, :url => @post) do |f| end
+    end
 
     expected = "<form action=\"/posts/123\" method=\"post\"></form>"
     assert_equal expected, output_buffer