Make courseware index view more bulletproof

lms/djangoapps/courseware/views.py

@@ -184,6 +184,7 @@ def index(request, course_id, chapter=None, section=None,
     chapter = clean(chapter)
     section = clean(section)
 
+    try:
         context = {
             'csrf': csrf(request)['csrf_token'],
             'accordion': render_accordion(request, course, chapter, section),
@@ -212,6 +213,25 @@ def index(request, course_id, chapter=None, section=None,
 
 
         result = render_to_response('courseware.html', context)
+    except:
+        # In production, don't want to let a 500 out for any reason
+        if settings.DEBUG:
+            raise
+        else:
+            log.exception("Error in index view: user={user}, course={course},"
+                          " chapter={chapter} section={section}"
+                          "position={position}".format(
+                              user=request.user,
+                              course=course,
+                              chapter=chapter,
+                              section=section,
+                              position=position
+                              ))
+            try:
+                result = render_to_response('courseware-error.html', {})
+            except:
+                result = HttpResponse("There was an unrecoverable error")
+
     return result
 
 @ensure_csrf_cookie