show which prereq is needed

openedx/features/course_experience/templates/course_experience/course-outline-fragment.html

@@ -104,6 +104,13 @@ from openedx.core.djangolib.markup import HTML, Text
                                                 % endif
                                             </span>
                                             % endif
+                                            % if subsection['id'] in milestones and not milestones[subsection['id']]['completed_prereqs']:
+                                            <span class="subtitle">
+                                                <span class="subtitle-name">
+                                                    Prereq is: ${milestones[subsection['id']]['prereq']}
+                                                </span>
+                                            </span>
+                                            % endif
                                         </div> <!-- /details -->
                                     </div> <!-- /subsection-text -->
                                     <div class="subsection-actions">

openedx/features/course_experience/utils.py

@@ -8,6 +8,26 @@ from lms.djangoapps.course_blocks.utils import get_student_module_as_dict
 from request_cache.middleware import request_cached
 from xmodule.modulestore.django import modulestore
 
+#TODO: what does request_cached do?
+@request_cached
+def get_all_course_blocks(request, course_id):
+    #TODO: add description
+    
+    course_key = CourseKey.from_string(course_id)
+    course_usage_key = modulestore().make_course_usage_key(course_key)
+
+    # TODO: dedup this code
+    # TODO: :have this only be called once per outline render fragment
+    all_blocks = get_blocks(
+        request,
+        course_usage_key,
+        user=request.user,
+        nav_depth=3,
+        requested_fields=['children', 'display_name', 'type',
+                          'due', 'graded', 'special_exam_info', 'format'],
+        block_types_filter=['course', 'chapter', 'sequential']
+    )
+    return all_blocks
 
 @request_cached
 def get_course_outline_block_tree(request, course_id):
@@ -62,6 +82,8 @@ def get_course_outline_block_tree(request, course_id):
     course_key = CourseKey.from_string(course_id)
     course_usage_key = modulestore().make_course_usage_key(course_key)
 
+    # TODO: dedup this code
+    # TODO: :have this only be called once per outline render fragment
     all_blocks = get_blocks(
         request,
         course_usage_key,
@@ -77,3 +99,6 @@ def get_course_outline_block_tree(request, course_id):
         set_last_accessed_default(course_outline_root_block)
         mark_last_accessed(request.user, course_key, course_outline_root_block)
     return course_outline_root_block
+
+
+

openedx/features/course_experience/views/course_outline.py

@@ -6,11 +6,11 @@ from django.template.loader import render_to_string
 from opaque_keys.edx.keys import CourseKey
 from web_fragments.fragment import Fragment
 
-
+from lms.djangoapps.course_api.blocks.api import get_blocks
 from courseware.courses import get_course_overview_with_access
 from openedx.core.djangoapps.plugin_api.views import EdxFragmentView
 
-from ..utils import get_course_outline_block_tree
+from ..utils import get_course_outline_block_tree, get_all_course_blocks
 from util.milestones_helpers import get_all_course_content_milestones, get_course_content_milestones_by_course, milestones_achieved_by_user, get_course_content_milestones
 
 
@@ -26,6 +26,7 @@ class CourseOutlineFragmentView(EdxFragmentView):
         course_key = CourseKey.from_string(course_id)
         course_overview = get_course_overview_with_access(request.user, 'load', course_key, check_if_enrolled=True)
         course_block_tree = get_course_outline_block_tree(request, course_id)
+        all_course_blocks = get_all_course_blocks(request, course_id)
 
         if not course_block_tree:
             return None
@@ -33,6 +34,7 @@ class CourseOutlineFragmentView(EdxFragmentView):
 
         content_milestones = {}
         
+        #TODO: should i be using a user id here? probably
         course_prereqs = get_all_course_content_milestones(course_key) #, relationship='requires')
 
         unfulfilled_prereqs = get_course_content_milestones_by_course(
@@ -49,7 +51,9 @@ class CourseOutlineFragmentView(EdxFragmentView):
                 }
         
         for milestone in unfulfilled_prereqs:
-            content_milestones[ milestone['content_id'] ]['completed_prereqs'] = False
+            content_milestones[milestone['content_id']]['completed_prereqs'] = False
+            content_milestones[milestone['content_id']]['prereq'] = all_course_blocks['blocks'][milestone['namespace'].replace('.gating','')]['display_name']
+            #TODO: can there be multiple prereqs?
 
         context = {
             'csrf': csrf(request)['csrf_token'],