Fix studio import and export for CombinedOpenEnded and PeerGrading XModules

Also, fix a bug in the peer grading.

common/lib/xmodule/xmodule/combined_open_ended_module.py

@@ -4,7 +4,7 @@ from lxml import etree
 
 from pkg_resources import resource_string
 
-from .editing_module import EditingDescriptor
+from xmodule.raw_module import RawDescriptor
 from .x_module import XModule
 from .xml_module import XmlDescriptor
 from xmodule.open_ended_grading_classes.combined_open_ended_modulev1 import CombinedOpenEndedV1Module, CombinedOpenEndedV1Descriptor
@@ -134,7 +134,7 @@ class CombinedOpenEndedModule(XModule):
         }
 
         self.child_descriptor = descriptors[version_index](self.system)
-        self.child_definition = descriptors[version_index].definition_from_xml(etree.fromstring(definition['xml_string']), self.system)
+        self.child_definition = descriptors[version_index].definition_from_xml(etree.fromstring(definition['data']), self.system)
         self.child_module = modules[version_index](self.system, location, self.child_definition, self.child_descriptor,
             instance_state = json.dumps(instance_state), metadata = self.metadata, static_data= static_data)
 
@@ -165,7 +165,7 @@ class CombinedOpenEndedModule(XModule):
         return self.child_module.display_name
 
 
-class CombinedOpenEndedDescriptor(XmlDescriptor, EditingDescriptor):
+class CombinedOpenEndedDescriptor(RawDescriptor):
     """
     Module for adding combined open ended questions
     """
@@ -180,32 +180,3 @@ class CombinedOpenEndedDescriptor(XmlDescriptor, EditingDescriptor):
     js = {'coffee': [resource_string(__name__, 'js/src/html/edit.coffee')]}
     js_module_name = "HTMLEditingDescriptor"
 
-    @classmethod
-    def definition_from_xml(cls, xml_object, system):
-        """
-        Pull out the individual tasks, the rubric, and the prompt, and parse
-
-        Returns:
-        {
-        'rubric': 'some-html',
-        'prompt': 'some-html',
-        'task_xml': dictionary of xml strings,
-        }
-        """
-
-        return {'xml_string' : etree.tostring(xml_object), 'metadata' : xml_object.attrib}
-
-
-    def definition_to_xml(self, resource_fs):
-        '''Return an xml element representing this definition.'''
-        elt = etree.Element('combinedopenended')
-
-        def add_child(k):
-            child_str = '<{tag}>{body}</{tag}>'.format(tag=k, body=self.definition[k])
-            child_node = etree.fromstring(child_str)
-            elt.append(child_node)
-
-        for child in ['task']:
-            add_child(child)
-
-        return elt

common/lib/xmodule/xmodule/peer_grading_module.py

@@ -60,6 +60,18 @@ class PeerGradingModule(XModule):
         if isinstance(self.use_for_single_location, basestring):
             self.use_for_single_location = (self.use_for_single_location in TRUE_DICT)
 
+        self.link_to_location = self.metadata.get('link_to_location', USE_FOR_SINGLE_LOCATION)
+        if self.use_for_single_location == True:
+            try:
+                self.linked_problem = modulestore().get_instance(self.system.course_id, self.link_to_location)
+            except:
+                log.error("Linked location {0} for peer grading module {1} does not exist".format(
+                    self.link_to_location, self.location))
+                raise
+            due_date = self.linked_problem.metadata.get('peer_grading_due', None)
+            if due_date:
+                self.metadata['due'] = due_date
+
         self.is_graded = self.metadata.get('is_graded', IS_GRADED)
         if isinstance(self.is_graded, basestring):
             self.is_graded = (self.is_graded in TRUE_DICT)
@@ -75,17 +87,6 @@ class PeerGradingModule(XModule):
 
         self.display_due_date = self.timeinfo.display_due_date
 
-        self.link_to_location = self.metadata.get('link_to_location', USE_FOR_SINGLE_LOCATION)
-        if self.use_for_single_location == True:
-            try:
-                self.linked_problem = modulestore().get_instance(self.system.course_id, self.link_to_location)
-            except:
-                log.error("Linked location {0} for peer grading module {1} does not exist".format(
-                    self.link_to_location, self.location))
-                raise
-            due_date = self.linked_problem.metadata.get('peer_grading_due', None)
-            if due_date:
-                self.metadata['due'] = due_date
 
         self.ajax_url = self.system.ajax_url
         if not self.ajax_url.endswith("/"):
@@ -606,13 +607,4 @@ class PeerGradingDescriptor(XmlDescriptor, EditingDescriptor):
     def definition_to_xml(self, resource_fs):
         '''Return an xml element representing this definition.'''
         elt = etree.Element('peergrading')
-
-        def add_child(k):
-            child_str = '<{tag}>{body}</{tag}>'.format(tag=k, body=self.definition[k])
-            child_node = etree.fromstring(child_str)
-            elt.append(child_node)
-
-        for child in ['task']:
-            add_child(child)
-
         return elt