MA-187 ValueError fix

Fix for MA-187 where a value error was thrown when a course has a video directly under a section. This PR handles the situations where a chapter or section can be none, and then returns the appropriate url if available.
2014-12-23 16:00:14 -05:00
parent 8dd7b78065
commit 3e5f7bacdd
3 changed files with 228 additions and 37 deletions
--- a/common/test/data/split_test_module/course.xml
+++ b/common/test/data/split_test_module/course.xml
@@ -16,4 +16,4 @@
            </vertical>
        </sequential>
    </chapter>
-</course>
+</course>