Fixing sequentials nested inside of verticals, provides a path to sequentials…

Fixing sequentials nested inside of verticals, provides a path to sequentials nested in sequentials. Changes jump_to to redirect to courseware index.

common/lib/xmodule/xmodule/modulestore/search.py

@@ -93,11 +93,14 @@ def path_to_location(modulestore, course_id, location):
     # Figure out the position
     position = None
     if n > 3:
-        section_desc = modulestore.get_instance(course_id, path[2])
-        child_locs = [c.location for c in section_desc.get_children()]
-        # positions are 1-indexed, and should be strings to be consistent with
-        # url parsing.
-        position = str(child_locs.index(path[3]) + 1)
-
+        position_list = []
+        for path_index in range(2, n-1):
+            if path[path_index].category == 'sequential':
+                section_desc = modulestore.get_instance(course_id, path[path_index])
+                child_locs = [c.location for c in section_desc.get_children()]
+                # positions are 1-indexed, and should be strings to be consistent with
+                # url parsing.
+                position_list.append(str(child_locs.index(path[path_index+1]) + 1))
+        position = "_".join(position_list)
 
     return (course_id, chapter, section, position)

lms/djangoapps/courseware/views.py

@@ -218,8 +218,11 @@ def jump_to(request, course_id, location):
         raise Http404("This location is not in any class: {0}".format(location))
 
     # Rely on index to do all error handling and access control.
-    return index(request, course_id, chapter, section, position)
-
+    return redirect('courseware_position',
+                    course_id=course_id, 
+                    chapter=chapter, 
+                    section=section, 
+                    position=position)
 @ensure_csrf_cookie
 def course_info(request, course_id):
     """