From 20ed017a5887a25d42a3e2a30a12e42cd6b54e28 Mon Sep 17 00:00:00 2001
From: Trisha Anand <trisha@appsmith.com>
Date: Thu, 4 Mar 2021 15:35:46 +0530
Subject: [PATCH] In case of no mustache bindings are found in dynamic path
 list, throw invalid dynamic binding reference error. (#3394)

---
 .../appsmith/server/services/LayoutActionServiceImpl.java  | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/app/server/appsmith-server/src/main/java/com/appsmith/server/services/LayoutActionServiceImpl.java b/app/server/appsmith-server/src/main/java/com/appsmith/server/services/LayoutActionServiceImpl.java
index ca682ae798..5a64884605 100644
--- a/app/server/appsmith-server/src/main/java/com/appsmith/server/services/LayoutActionServiceImpl.java
+++ b/app/server/appsmith-server/src/main/java/com/appsmith/server/services/LayoutActionServiceImpl.java
@@ -346,6 +346,13 @@ public class LayoutActionServiceImpl implements LayoutActionService {
                 // Only extract mustache keys from leaf nodes
                 if (parent != null && isLeafNode) {
                     Set<String> mustacheKeysFromFields = MustacheHelper.extractMustacheKeysFromFields(parent);
+
+                    // We found the path. But if the path does not have any mustache bindings, throw the error
+                    if (mustacheKeysFromFields.isEmpty()) {
+                        throw new AppsmithException(AppsmithError.INVALID_DYNAMIC_BINDING_REFERENCE, widgetType,
+                                widgetName, widgetId, fieldPath, pageId, layoutId);
+                    }
+
                     dynamicBindings.addAll(mustacheKeysFromFields);
                 }
             }