Store the id of the publishing user on publish

cms/djangoapps/contentstore/views.py

@@ -527,7 +527,7 @@ def publish_draft(request):
         raise PermissionDenied()
 
     item = modulestore().get_item(location)
-    _xmodule_recurse(item, lambda i: modulestore().publish(i.location))
+    _xmodule_recurse(item, lambda i: modulestore().publish(i.location, request.user.id))
 
     return HttpResponse()
 

common/lib/xmodule/xmodule/modulestore/draft.py

@@ -159,7 +159,7 @@ class DraftModuleStore(ModuleStoreBase):
         """
         return super(DraftModuleStore, self).delete_item(as_draft(location))
 
-    def publish(self, location):
+    def publish(self, location, published_by_id):
         """
         Save a current draft to the underlying modulestore
         """
@@ -167,6 +167,7 @@ class DraftModuleStore(ModuleStoreBase):
         metadata = {}
         metadata.update(draft.metadata)
         metadata['published_date'] = tuple(datetime.utcnow().timetuple())
+        metadata['published_by'] = published_by_id
         super(DraftModuleStore, self).update_item(location, draft.definition.get('data', {}))
         super(DraftModuleStore, self).update_children(location, draft.definition.get('children', []))
         super(DraftModuleStore, self).update_metadata(location, metadata)

common/lib/xmodule/xmodule/x_module.py

@@ -409,7 +409,7 @@ class XModuleDescriptor(Plugin, HTMLSnippet, ResourceTemplates):
 
     # cdodge: this is a list of metadata names which are 'system' metadata
     # and should not be edited by an end-user
-    system_metadata_fields = ['data_dir', 'published_date']
+    system_metadata_fields = ['data_dir', 'published_date', 'published_by']
     
     # A list of descriptor attributes that must be equal for the descriptors to
     # be equal