Initial implementation

problem_builder/mcq.py

@@ -167,6 +167,42 @@ class MCQBlock(SubmittingXBlockMixin, QuestionnaireAbstractBlock):
                 self._(u"A choice value listed as correct does not exist: {choice}").format(choice=choice_name(val))
             )
 
+    def student_view_data(self):
+        """
+        Returns a JSON representation of the student_view of this XBlock,
+        retrievable from the Course Block API.
+        """
+        return {
+            'id': self.url_name,
+            'type': self.CATEGORY,
+            'question': self.question,
+            'message': self.message,
+            'choices': [
+                {'value': choice['value'], 'content': choice['display_name']}
+                for choice in self.human_readable_choices
+            ],
+            'weight': self.weight,
+            'correct_choices': self.correct_choices,
+            'tips': [
+                {'content': tip.content, 'for_choices': tip.values}
+                for tip in self.get_tips()
+            ],
+            'user_state': {
+                'student_choice': self.student_choice,
+            },
+        }
+
+    @property
+    def url_name(self):
+        """
+        Get the url_name for this block. In Studio/LMS it is provided by a mixin, so we just
+        defer to super(). In the workbench or any other platform, we use the usage_id.
+        """
+        try:
+            return super(MCQBlock, self).url_name
+        except AttributeError:
+            return unicode(self.scope_ids.usage_id)
+
 
 class RatingBlock(MCQBlock):
     """

problem_builder/mentoring.py

@@ -905,6 +905,38 @@ class MentoringBlock(BaseMentoringBlock, StudioContainerWithNestedXBlocksMixin,
         """
         return loader.load_scenarios_from_path('templates/xml')
 
+    def student_view_data(self):
+        """
+        Returns a JSON representation of the student_view of this XBlock,
+        retrievable from the Course Block API.
+        """
+        components = []
+        for child_id in self.children:
+            block = self.runtime.get_block(child_id)
+            if hasattr(block, 'student_view_data'):
+                components.append(block.student_view_data())
+        return {
+            'max_attempts': self.max_attempts,
+            'user_state': {
+                'num_attempts': self.num_attempts,
+                'attempted': self.attempted,
+                'completed': self.completed,
+                'student_results': self.student_results,
+                'step': self.step,
+            },
+            'extended_feedback': self.extended_feedback,
+            'feedback_label': self.feedback_label,
+            'components': components,
+            'messages': {
+                message_type: get_message_label(message_type)
+                for message_type in (
+                        'completed',
+                        'incomplete',
+                        'max_attempts_reached',
+                )
+            }
+        }
+
 
 class MentoringWithExplicitStepsBlock(BaseMentoringBlock, StudioContainerWithNestedXBlocksMixin):
     """