[WIP] trying to validate empty parent account

gui/app/src/common/crud/widgets/foreign-key.tsx

@@ -10,7 +10,7 @@ export const ForeignKeyWidget = (props: WidgetProps) => {
 
   const valueResult = useOne({
     resource: resource,
-    id: props.value
+    id: props.value != "" ? props.value : undefined
   });
 
   const [inputValue, setInputValue] = useState<string>("");
@@ -42,6 +42,7 @@ export const ForeignKeyWidget = (props: WidgetProps) => {
       onChange={(event, newValue) => {
         setSelectedValue(newValue)
         props.onChange(newValue ? newValue.id : "")
+        return true
       }}
       //inputValue={inputValue}
       onInputChange={(event, newInputValue) => setInputValue(newInputValue)}

gui/app/src/pages/accounts/list.tsx

@@ -15,6 +15,7 @@ export const AccountList: React.FC = () => {
     () => [
       { field: "id", headerName: "ID" },
       { field: "name", headerName: "Name", flex: 1 },
+      { field: "path", headerName: "path", flex: 1 },
       { field: "type", headerName: "Type", flex: 0.3 },
       {
         field: "actions",