From b5d99555295d8f5a72509a27b252c1369d5e3cfc Mon Sep 17 00:00:00 2001
From: Menci <huanghaorui301@gmail.com>
Date: Sun, 21 Apr 2019 15:29:17 +0800
Subject: [PATCH] Fix problem tagIDs cache

---
 models/problem.ts | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/models/problem.ts b/models/problem.ts
index 82f8b25..5d4f9b4 100644
--- a/models/problem.ts
+++ b/models/problem.ts
@@ -566,19 +566,19 @@ export default class Problem extends Model {
   }
 
   async getTags() {
+    let tagIDs;
     if (problemTagCache.has(this.id)) {
-      return problemTagCache.get(this.id);
-    }
-
-    let maps = await ProblemTagMap.find({
-      where: {
-        problem_id: this.id
-      }
-    });
-
-    let tagIDs = maps.map(x => x.tag_id);
+      tagIDs = problemTagCache.get(this.id);
+    } else {
+      let maps = await ProblemTagMap.find({
+        where: {
+          problem_id: this.id
+        }
+      });
 
-    problemTagCache.set(this.id, tagIDs);
+      tagIDs = maps.map(x => x.tag_id);
+      problemTagCache.set(this.id, tagIDs);
+    }
 
     let res = await (tagIDs as any).mapAsync(async tagID => {
       return ProblemTag.findById(tagID);