WIP: Add grade publishing functionality

common/lib/xmodule/xmodule/capa_module.py

@@ -103,7 +103,7 @@ class CapaModule(XModule):
     graceperiod = Timedelta(help="Amount of time after the due date that submissions will be accepted", scope=Scope.settings)
     show_answer = String(help="When to show the problem answer to the student", scope=Scope.settings, default="closed")
     force_save_button = Boolean(help="Whether to force the save button to appear on the page", scope=Scope.settings, default=False)
-    rerandomize = String(help="When to rerandomize the problem", default="always")
+    rerandomize = String(help="When to rerandomize the problem", default="always", scope=Scope.settings)
     data = String(help="XML data for the problem", scope=Scope.content)
     correct_map = Object(help="Dictionary with the correctness of current student answers", scope=Scope.student_state, default={})
     student_answers = Object(help="Dictionary with the current student responses", scope=Scope.student_state)
@@ -442,6 +442,7 @@ class CapaModule(XModule):
         score_msg = get['xqueue_body']
         self.lcp.update_score(score_msg, queuekey)
         self.set_state_from_lcp()
+        self.publish_grade()
 
         return dict()  # No AJAX return is needed
 
@@ -519,6 +520,19 @@ class CapaModule(XModule):
 
         return answers
 
+    def publish_grade(self):
+        """
+        Publishes the student's current grade to the system as an event
+        """
+        score = self.lcp.get_score()
+        print score
+        self.system.publish({
+            'event_name': 'grade',
+            'value': score['score'],
+            'max_value': score['total'],
+        })
+
+
     def check_problem(self, get):
         ''' Checks whether answers to a problem are correct, and
             returns a map of correct/incorrect answers:
@@ -570,6 +584,9 @@ class CapaModule(XModule):
         self.attempts = self.attempts + 1
         self.lcp.done = True
 
+        self.set_state_from_lcp()
+        self.publish_grade()
+
         # success = correct if ALL questions in this problem are correct
         success = 'correct'
         for answer_id in correct_map:

common/lib/xmodule/xmodule/x_module.py

@@ -672,6 +672,7 @@ class ModuleSystem(object):
                  filestore=None,
                  debug=False,
                  xqueue=None,
+                 publish=None,
                  node_path="",
                  anonymous_student_id=''):
         '''
@@ -723,6 +724,12 @@ class ModuleSystem(object):
         self.user_is_staff = user is not None and user.is_staff
         self.xmodule_model_data = xmodule_model_data
 
+        if publish is None:
+            publish = lambda e: None
+
+        self.publish = publish
+
+
     def get(self, attr):
         '''	provide uniform access to attributes (like etree).'''
         return self.__dict__.get(attr)

lms/djangoapps/courseware/module_render.py

@@ -277,6 +277,26 @@ def _get_module(user, request, location, student_module_cache, course_id, positi
             LmsUsage(location, location)
         )
 
+    def publish(event):
+        if event.get('event_name') != 'grade':
+            return
+
+        student_module = student_module_cache.lookup(
+            course_id, descriptor.location.category, descriptor.location.url()
+        )
+        if student_module is None:
+            student_module = StudentModule(
+                course_id=course_id,
+                student=user,
+                module_type=descriptor.location.category,
+                module_state_key=descriptor.location.url(),
+                state=json.dumps({})
+            )
+            student_module_cache.append(student_module)
+        student_module.grade = event.get('value')
+        student_module.max_grade = event.get('max_value')
+        student_module.save()
+
     # TODO (cpennington): When modules are shared between courses, the static
     # prefix is going to have to be specific to the module, not the directory
     # that the xml was loaded from
@@ -294,7 +314,8 @@ def _get_module(user, request, location, student_module_cache, course_id, positi
                           replace_urls=replace_urls,
                           node_path=settings.NODE_PATH,
                           anonymous_student_id=anonymous_student_id,
-                          xmodule_model_data=xmodule_model_data
+                          xmodule_model_data=xmodule_model_data,
+                          publish=publish,
                           )
     # pass position specified in URL to module through ModuleSystem
     system.set('position', position)