Move aggrid temporarily to read data despite unmounted

Author: evnchn

nicegui/elements/aggrid/aggrid.py

@@ -243,11 +243,29 @@ async def get_client_data(
             'filtered_sorted': 'forEachNodeAfterFilterAndSort',
             'leaf': 'forEachLeafNode',
         }
-        result = await self.client.run_javascript(f'''
+        js_code = f'''
             const rowData = [];
             getElement({self.id}).api.{API_METHODS[method]}(node => rowData.push(node.data));
             return rowData;
+        '''
+        result = await self.client.run_javascript(f'''
+            try {{
+                {js_code}
+            }} catch (e) {{
+                return null;
+            }}
         ''', timeout=timeout)
+        if result is not None:
+            return cast(list[dict], result)
+        # getElement failed, move the element to make it accessible
+        past_parent = next(self.ancestors())
+        past_index_in_parent = list(past_parent.descendants()).index(self)
+        past_visible = self.visible
+        self.move(self.client.content)
+        self.visible = False
+        result = await self.client.run_javascript(js_code, timeout=timeout)
+        self.move(past_parent, target_index=past_index_in_parent)
+        self.visible = past_visible
         return cast(list[dict], result)
 
     async def load_client_data(self) -> None:

nicegui/static/nicegui.js

@@ -409,7 +409,7 @@ function createApp(elements, options) {
 
           await this.$nextTick();
           for (const [id, element] of Object.entries(msg)) {
-            if (element?.update_method) {
+            if (element?.update_method && getElement(id)) {
               getElement(id)[element.update_method]();
             }
           }