do not write empty values to gsheet

app.ipynb

@@ -191,20 +191,19 @@
     "            raise gr.Error(f'Could not reset the task demo_task_{task_id} :(')\n",
     "        return '', '', '', '', '', '', '', '', '', ''\n",
     "\n",
-    "    def save_gsheet(self, id, ratings):\n",
+    "    def save_gsheet(self, task_id, ratings):\n",
     "        \"\"\"Save the task to google spreadsheet.\"\"\"\n",
-    "        # parse the ratings\n",
-    "        groundedness1, fluency1, utility1, notes1, \\\n",
-    "        groundedness2, fluency2, utility2, notes2, \\\n",
-    "        overall, notes = ratings\n",
     "        try:\n",
     "            # configure gsheet credentials\n",
     "            gc = gspread.service_account('./gsheet_service_account.json')\n",
     "            sheet_id = '1D2sfE9YXKtd7cKlgalo5UnuNKC-GhxlGqHVYUlkQlCY'\n",
     "            sh = gc.open_by_key(sheet_id).worksheet('demo-app')\n",
-    "            # update task ratings in the worksheet\n",
-    "            sh.update(range_name=f'C{3+int(id)}:J{3+int(id)}',\n",
-    "                      values=[[groundedness1, fluency1, utility1, groundedness2, fluency2, utility2, overall, notes]])\n",
+    "            # update non-empty task ratings in the worksheet\n",
+    "            cell_val = []\n",
+    "            for idx, rating in enumerate([ratings[idx] for idx in [0,1,2,4,5,6,8,9]]):\n",
+    "                if rating:\n",
+    "                    cell_val.append({'range': f'{chr(67+idx)}{3+int(task_id)}', 'values': [[f'{rating}']]})\n",
+    "            sh.batch_update(cell_val)\n",
     "        except:\n",
     "            gr.Warning(f'Could not save the task demo_task_{task_id} to the spreadsheet :(')\n",
     "\n",