From 141d5894bbf705ce2581429ed12987b4f0b2c68d Mon Sep 17 00:00:00 2001
From: NIK <nheger@gmail.com>
Date: Tue, 24 Oct 2023 00:14:04 +0800
Subject: [PATCH] delete previous election edge if it exists

---
 src/upvote_election/actions.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/upvote_election/actions.cpp b/src/upvote_election/actions.cpp
index d70f9f2..15600ff 100644
--- a/src/upvote_election/actions.cpp
+++ b/src/upvote_election/actions.cpp
@@ -842,6 +842,11 @@ namespace hypha {
                     // delete ongoing election link
                     Edge::get(get_self(), daoId, election.getId(), upvote_common::links::ONGOING_ELECTION).erase();
 
+                    // delete previous previous election link
+                    if (auto [exists, edge] = Edge::getIfExists(get_self(), daoId, upvote_common::links::PREVIOUS_ELECTION); exists) {
+                        edge.erase();
+                    }
+
                     // add previous election link
                     Edge(get_self(), get_self(), daoId, election.getId(), upvote_common::links::PREVIOUS_ELECTION);