Added subsection id to gated metadata.

openedx/core/lib/gating/api.py

@@ -20,7 +20,7 @@ from util import milestones_helpers
 from xblock.completable import XBlockCompletionMode as CompletionMode
 from xmodule.modulestore.django import modulestore
 from xmodule.modulestore.exceptions import ItemNotFoundError
-import six
+
 
 log = logging.getLogger(__name__)
 
@@ -164,7 +164,7 @@ def get_prerequisites(course_key):
         milestone = milestones_by_block_id.get(block.location.block_id)
         if milestone:
             milestone['block_display_name'] = block.display_name
-            milestone['block_usage_key'] = six.text_type(block.location)
+            milestone['block_usage_key'] = str(block.location)
             result.append(milestone)
 
     return result
@@ -184,7 +184,7 @@ def add_prerequisite(course_key, prereq_content_key):
     """
     milestone = milestones_api.add_milestone(
         {
-            'name': _(u'Gating milestone for {usage_key}').format(usage_key=six.text_type(prereq_content_key)),
+            'name': _(u'Gating milestone for {usage_key}').format(usage_key=str(prereq_content_key)),
             'namespace': "{usage_key}{qualifier}".format(
                 usage_key=prereq_content_key,
                 qualifier=GATING_NAMESPACE_QUALIFIER
@@ -383,7 +383,8 @@ def compute_is_prereq_met(content_id, user_id, recalc_on_unmet=False):
         subsection = store.get_item(subsection_usage_key)
         prereq_meta_info = {
             'url': reverse('jump_to', kwargs={'course_id': course_key, 'location': subsection_usage_key}),
-            'display_name': subsection.display_name
+            'display_name': subsection.display_name,
+            'id': str(subsection_usage_key)
         }
         prereq_met = update_milestone(milestone, subsection_usage_key, milestone, student)