From 2f8d75eb73251de0ddfa04b7193d805f81e8f5b3 Mon Sep 17 00:00:00 2001
From: James Cole <thegrumpydictator@gmail.com>
Date: Sat, 9 Sep 2017 18:44:05 +0200
Subject: [PATCH] Fix for #827

---
 app/Http/Controllers/Transaction/LinkController.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/Http/Controllers/Transaction/LinkController.php b/app/Http/Controllers/Transaction/LinkController.php
index 98aaf10651..e455bac1e1 100644
--- a/app/Http/Controllers/Transaction/LinkController.php
+++ b/app/Http/Controllers/Transaction/LinkController.php
@@ -95,6 +95,11 @@ class LinkController extends Controller
         JournalLinkRequest $request, LinkTypeRepositoryInterface $repository, JournalRepositoryInterface $journalRepository, TransactionJournal $journal
     ) {
         $linkInfo      = $request->getLinkInfo();
+        if($linkInfo['transaction_journal_id'] === 0) {
+            Session::flash('error', trans('firefly.invalid_link_selection'));
+
+            return redirect(route('transactions.show', [$journal->id]));
+        }
         $linkType      = $repository->find($linkInfo['link_type_id']);
         $other         = $journalRepository->find($linkInfo['transaction_journal_id']);
         $alreadyLinked = $repository->findLink($journal, $other);