Revert "Don't use the _before_type_cast version of attributes in the form"

This reverts commit 787e22bb491bd8c36db1e9734261c4ce02c5c5fd.

actionview/lib/action_view/helpers/tags/base.rb

@@ -28,6 +28,16 @@ def value(object)
           object.public_send @method_name if object
         end
 
+        def value_before_type_cast(object)
+          unless object.nil?
+            method_before_type_cast = @method_name + "_before_type_cast"
+
+            object.respond_to?(method_before_type_cast) ?
+              object.send(method_before_type_cast) :
+              value(object)
+          end
+        end
+
         def retrieve_object(object)
           if object
             object

actionview/lib/action_view/helpers/tags/text_area.rb

@@ -14,7 +14,7 @@ def render
             options["cols"], options["rows"] = size.split("x") if size.respond_to?(:split)
           end
 
-          content_tag("textarea", options.delete("value") { value(object) }, options)
+          content_tag("textarea", options.delete("value") { value_before_type_cast(object) }, options)
         end
       end
     end

actionview/lib/action_view/helpers/tags/text_field.rb

@@ -10,7 +10,7 @@ def render
           options = @options.stringify_keys
           options["size"] = options["maxlength"] unless options.key?("size")
           options["type"] ||= field_type
-          options["value"] = options.fetch("value") { value(object) } unless field_type == "file"
+          options["value"] = options.fetch("value") { value_before_type_cast(object) } unless field_type == "file"
           add_default_name_and_id(options)
           tag("input", options)
         end

actionview/test/template/form_helper_test.rb

@@ -99,7 +99,7 @@ def full_messages() ["Author name can't be empty"] end
       }.new
     end
     def @post.to_key; [123]; end
-    def @post.id; 123; end
+    def @post.id_before_type_cast; 123; end
     def @post.to_param; '123'; end
 
     @post.persisted   = true