Asset urls must start w/ slash

LMS-11233

cms/djangoapps/contentstore/utils.py

@@ -146,7 +146,7 @@ def get_lms_link_for_about_page(course_key):
 def course_image_url(course):
     """Returns the image url for the course."""
     loc = StaticContent.compute_location(course.location.course_key, course.course_image)
-    path = loc.to_deprecated_string()
+    path = StaticContent.serialize_asset_key_with_slash(loc)
     return path
 
 

cms/djangoapps/contentstore/views/assets.py

@@ -277,7 +277,7 @@ def _get_asset_json(display_name, date, location, thumbnail_location, locked):
     """
     Helper method for formatting the asset information to send to client.
     """
-    asset_url = _add_slash(location.to_deprecated_string())
+    asset_url = StaticContent.serialize_asset_key_with_slash(location)
     external_url = settings.LMS_BASE + asset_url
     return {
         'display_name': display_name,
@@ -285,14 +285,8 @@ def _get_asset_json(display_name, date, location, thumbnail_location, locked):
         'url': asset_url,
         'external_url': external_url,
         'portable_url': StaticContent.get_static_path_from_location(location),
-        'thumbnail': _add_slash(unicode(thumbnail_location)) if thumbnail_location else None,
+        'thumbnail': StaticContent.serialize_asset_key_with_slash(thumbnail_location) if thumbnail_location else None,
         'locked': locked,
         # Needed for Backbone delete/update.
         'id': unicode(location)
     }
-
-
-def _add_slash(url):
-    if not url.startswith('/'):
-        url = '/' + url  # TODO - re-address this once LMS-11198 is tackled.
-    return url