fix: #7788, fix on topic move and new post

src/categories/recentreplies.js

@@ -37,7 +37,7 @@ module.exports = function (Categories) {
 	};
 
 	Categories.updateRecentTidForCid = async function (cid) {
-		let recentTid;
+		let postData;
 		let topicData;
 		let index = 0;
 		do {
@@ -46,16 +46,16 @@ module.exports = function (Categories) {
 			if (!pids.length) {
 				return;
 			}
-			recentTid = await posts.getPostField(pids[0], 'tid');
-			if (!recentTid) {
-				return;
+			postData = await posts.getPostFields(pids[0], ['tid', 'deleted']);
+
+			if (postData && postData.tid && !postData.deleted) {
+				topicData = await topics.getTopicData(postData.tid);
 			}
-			topicData = await topics.getTopicData(recentTid);
 			index += 1;
 		} while (!topicData || topicData.deleted);
 
-		if (recentTid) {
-			await Categories.updateRecentTid(cid, recentTid);
+		if (postData && postData.tid) {
+			await Categories.updateRecentTid(cid, postData.tid);
 		}
 	};
 

src/categories/topics.js

@@ -169,11 +169,11 @@ module.exports = function (Categories) {
 		const promises = [
 			db.sortedSetAdd('cid:' + cid + ':pids', postData.timestamp, postData.pid),
 			db.incrObjectField('category:' + cid, 'post_count'),
-			Categories.updateRecentTid(cid, postData.tid),
 		];
 		if (!pinned) {
 			promises.push(db.sortedSetIncrBy('cid:' + cid + ':tids:posts', 1, postData.tid));
 		}
 		await Promise.all(promises);
+		await Categories.updateRecentTidForCid(cid);
 	};
 };

src/topics/tools.js

@@ -207,7 +207,7 @@ module.exports = function (Topics) {
 		await Promise.all([
 			categories.incrementCategoryFieldBy(oldCid, 'topic_count', -1),
 			categories.incrementCategoryFieldBy(cid, 'topic_count', 1),
-			categories.updateRecentTid(cid, tid),
+			categories.updateRecentTidForCid(cid),
 			categories.updateRecentTidForCid(oldCid),
 			Topics.setTopicFields(tid, {
 				cid: cid,