From 7d57852c7e944c223bae0735a02c8b2d36b41c07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9mie=20Pardou?=
 <571533+jrmi@users.noreply.github.com>
Date: Tue, 28 Oct 2025 15:49:35 +0100
Subject: [PATCH] Fix formula migration issue in get error messages (#4128)

---
 web-frontend/modules/builder/elementTypes.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/web-frontend/modules/builder/elementTypes.js b/web-frontend/modules/builder/elementTypes.js
index f40acaed75..a81af4c123 100644
--- a/web-frontend/modules/builder/elementTypes.js
+++ b/web-frontend/modules/builder/elementTypes.js
@@ -1304,7 +1304,7 @@ export class HeadingElementType extends ElementType {
    * is empty to indicate an error, otherwise return false.
    */
   getErrorMessage({ workspace, page, element, builder }) {
-    if (element.value.formula.length === 0) {
+    if (!element.value.formula) {
       return this.app.i18n.t('elementType.errorValueMissing')
     }
     return super.getErrorMessage({
@@ -1357,7 +1357,7 @@ export class TextElementType extends ElementType {
    * is empty to indicate an error, otherwise return false.
    */
   getErrorMessage({ workspace, page, element, builder }) {
-    if (element.value.formula.length === 0) {
+    if (!element.value.formula) {
       return this.app.i18n.t('elementType.errorValueMissing')
     }
     return super.getErrorMessage({
@@ -1414,7 +1414,7 @@ export class LinkElementType extends ElementType {
    */
   getErrorMessage({ workspace, page, element, builder }) {
     // A Link without any text isn't usable
-    if (element.value.formula.length === 0) {
+    if (!element.value.formula) {
       return this.app.i18n.t('elementType.errorValueMissing')
     }
 
@@ -1577,7 +1577,7 @@ export class ButtonElementType extends ElementType {
    */
   getErrorMessage({ workspace, page, element, builder }) {
     // If Button without any label should be considered invalid
-    if (element.value.formula.length === 0) {
+    if (!element.value.formula) {
       return this.app.i18n.t('elementType.errorValueMissing')
     }