From b54ebb346027dbe46e17d606a9865f95cbf062a5 Mon Sep 17 00:00:00 2001
From: Chris Dodge <cdodge@edx.org>
Date: Fri, 15 Mar 2013 22:43:20 -0400
Subject: [PATCH] make discussion module use MetadataOnlyEditingDescriptor
 which will not present a code edit region and only display the metadata
 editor

---
 cms/templates/widgets/metadata-only-edit.html          |  1 +
 common/lib/xmodule/xmodule/discussion_module.py        |  3 ++-
 common/lib/xmodule/xmodule/editing_module.py           | 10 ++++++++++
 .../xmodule/js/src/raw/edit/metadata-only.coffee       |  5 +++++
 common/lib/xmodule/xmodule/raw_module.py               |  2 +-
 5 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100644 cms/templates/widgets/metadata-only-edit.html
 create mode 100644 common/lib/xmodule/xmodule/js/src/raw/edit/metadata-only.coffee

diff --git a/cms/templates/widgets/metadata-only-edit.html b/cms/templates/widgets/metadata-only-edit.html
new file mode 100644
index 0000000000..a784f3798c
--- /dev/null
+++ b/cms/templates/widgets/metadata-only-edit.html
@@ -0,0 +1 @@
+<%include file="metadata-edit.html" />
diff --git a/common/lib/xmodule/xmodule/discussion_module.py b/common/lib/xmodule/xmodule/discussion_module.py
index 7725a88e77..a0a5207e16 100644
--- a/common/lib/xmodule/xmodule/discussion_module.py
+++ b/common/lib/xmodule/xmodule/discussion_module.py
@@ -3,6 +3,7 @@ from pkg_resources import resource_string, resource_listdir
 
 from xmodule.x_module import XModule
 from xmodule.raw_module import RawDescriptor
+from xmodule.editing_module import MetadataOnlyEditingDescriptor
 from xblock.core import String, Scope
 
 
@@ -28,7 +29,7 @@ class DiscussionModule(DiscussionFields, XModule):
         return self.system.render_template('discussion/_discussion_module.html', context)
 
 
-class DiscussionDescriptor(DiscussionFields, RawDescriptor):
+class DiscussionDescriptor(DiscussionFields, MetadataOnlyEditingDescriptor, RawDescriptor):
     module_class = DiscussionModule
     template_dir_name = "discussion"
 
diff --git a/common/lib/xmodule/xmodule/editing_module.py b/common/lib/xmodule/xmodule/editing_module.py
index b93727a96b..1f07861ae8 100644
--- a/common/lib/xmodule/xmodule/editing_module.py
+++ b/common/lib/xmodule/xmodule/editing_module.py
@@ -40,6 +40,16 @@ class XMLEditingDescriptor(EditingDescriptor):
     js = {'coffee': [resource_string(__name__, 'js/src/raw/edit/xml.coffee')]}
     js_module_name = "XMLEditingDescriptor"
 
+class MetadataOnlyEditingDescriptor(EditingDescriptor):
+    """
+    Module that provides a raw editing view of its data as XML. It does not perform
+    any validation of its definition
+    """
+
+    js = {'coffee': [resource_string(__name__, 'js/src/raw/edit/metadata-only.coffee')]}
+    js_module_name = "MetadataOnlyEditingDescriptor"
+
+    mako_template = "widgets/metadata-only-edit.html"
 
 class JSONEditingDescriptor(EditingDescriptor):
     """
diff --git a/common/lib/xmodule/xmodule/js/src/raw/edit/metadata-only.coffee b/common/lib/xmodule/xmodule/js/src/raw/edit/metadata-only.coffee
new file mode 100644
index 0000000000..8c9afe86aa
--- /dev/null
+++ b/common/lib/xmodule/xmodule/js/src/raw/edit/metadata-only.coffee
@@ -0,0 +1,5 @@
+class @MetadataOnlyEditingDescriptor extends XModule.Descriptor
+  constructor: (@element) ->
+
+  save: ->
+    data: null
diff --git a/common/lib/xmodule/xmodule/raw_module.py b/common/lib/xmodule/xmodule/raw_module.py
index 2c6e157018..6b5c2441be 100644
--- a/common/lib/xmodule/xmodule/raw_module.py
+++ b/common/lib/xmodule/xmodule/raw_module.py
@@ -1,5 +1,5 @@
 from lxml import etree
-from xmodule.editing_module import XMLEditingDescriptor
+from xmodule.editing_module import XMLEditingDescriptor, MetadataOnlyEditingDescriptor
 from xmodule.xml_module import XmlDescriptor
 import logging
 import sys