Fix bug with unique IDs.

drag_and_drop_v2/drag_and_drop_v2.py

@@ -157,7 +157,7 @@ class DragAndDropBlock(XBlock, XBlockWithSettingsMixin, ThemableXBlockMixin):
         return {
             "zones": self.data.get('zones', []),
             # SDK doesn't supply url_name.
-            "url_name": getattr(object, 'url_name', ''),
+            "url_name": getattr(self, 'url_name', ''),
             "display_zone_labels": self.data.get('displayLabels', False),
             "display_zone_borders": self.data.get('displayBorders', False),
             "items": items_without_answers(),

tests/unit/data/html/config_out.json

@@ -10,7 +10,7 @@
     "initial_feedback": "HTML <strong>Intro</strong> Feed",
     "display_zone_borders": false,
     "display_zone_labels": false,
-    "url_name": "",
+    "url_name": "unique_name",
 
     "zones": [
         {

tests/unit/data/html/settings.json

@@ -5,5 +5,6 @@
     "show_question_header": false,
     "weight": 1,
     "item_background_color": "white",
-    "item_text_color": "#000080"
+    "item_text_color": "#000080",
+    "url_name": "unique_name"
 }

tests/unit/data/plain/config_out.json

@@ -10,7 +10,7 @@
     "initial_feedback": "This is the initial feedback.",
     "display_zone_borders": false,
     "display_zone_labels": false,
-    "url_name": "",
+    "url_name": "test",
 
     "zones": [
         {

tests/unit/data/plain/settings.json

@@ -5,5 +5,6 @@
     "show_question_header": true,
     "weight": 1,
     "item_background_color": "",
-    "item_text_color": ""
+    "item_text_color": "",
+    "url_name": "test"
 }