From 07b13ee739b5c472a6b432965c19f2134fc354fc Mon Sep 17 00:00:00 2001
From: yangdx <yangdx@znipower.com>
Date: Mon, 17 Mar 2025 22:54:23 +0800
Subject: [PATCH] Prevent duplicate edges in Lightrag graph

- Check for reverse edge existence
---
 lightrag_webui/src/hooks/useLightragGraph.tsx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lightrag_webui/src/hooks/useLightragGraph.tsx b/lightrag_webui/src/hooks/useLightragGraph.tsx
index d7322413..b7477e97 100644
--- a/lightrag_webui/src/hooks/useLightragGraph.tsx
+++ b/lightrag_webui/src/hooks/useLightragGraph.tsx
@@ -578,6 +578,9 @@ const useLightrangeGraph = () => {
           if (sigmaGraph.hasEdge(newEdge.source, newEdge.target)) {
             continue;
           }
+          if (sigmaGraph.hasEdge(newEdge.target, newEdge.source)) {
+            continue;
+          }
 
           // Add the edge to the sigma graph
           newEdge.dynamicId = sigmaGraph.addDirectedEdge(newEdge.source, newEdge.target, {