From 16a3f3d66c3eec4c2e9ded6ae1468002409107ad Mon Sep 17 00:00:00 2001
From: Shariq Ansari <sharique.rik@gmail.com>
Date: Thu, 1 May 2025 17:56:18 +0530
Subject: [PATCH] fix: created triggerOnChange method

---
 frontend/src/data/document.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/frontend/src/data/document.js b/frontend/src/data/document.js
index 884d0876..0c2f96a3 100644
--- a/frontend/src/data/document.js
+++ b/frontend/src/data/document.js
@@ -44,10 +44,30 @@ export function useDocument(doctype, docname) {
     documentsCache[doctype][docname]['controller'] = doctypeController
   }
 
+  async function triggerOnChange(fieldname) {
+    if (!documentsCache[doctype][docname]?.controller) return
+
+    const c = documentsCache[doctype][docname].controller
+    c.oldValue = getOldValue(fieldname)
+    c.value = documentsCache[doctype][docname].doc[fieldname]
+
+    return await c[fieldname]?.()
+  }
+
+  function getOldValue(fieldname) {
+    if (!documentsCache[doctype][docname]) return ''
+
+    const document = documentsCache[doctype][docname]
+    const oldDoc = document.originalDoc
+    return oldDoc?.[fieldname] || document.doc[fieldname]
+  }
+
   return {
     document: documentsCache[doctype][docname],
     getActions: () =>
       documentsCache[doctype][docname]?.controller?.actions || [],
+    getOldValue,
+    triggerOnChange,
     setupFormScript,
   }
 }