feat: #8171, add oldCategory if topic is moved

public/language/en-GB/topic.json

@@ -33,6 +33,7 @@
 	"locked": "Locked",
 	"pinned": "Pinned",
 	"moved": "Moved",
+	"moved-from": "Moved from %1",
 	"copy-ip": "Copy IP",
 	"ban-ip": "Ban IP",
 	"view-history": "Edit History",

src/controllers/topics.js

@@ -5,6 +5,7 @@ const nconf = require('nconf');
 const user = require('../user');
 const meta = require('../meta');
 const topics = require('../topics');
+const categories = require('../categories');
 const posts = require('../posts');
 const privileges = require('../privileges');
 const helpers = require('./helpers');
@@ -93,6 +94,7 @@ topicsController.get = async function getTopic(req, res, callback) {
 
 	await Promise.all([
 		buildBreadcrumbs(topicData),
+		addOldCategory(topicData, userPrivileges),
 		addTags(topicData, req, res),
 		incrementViewCount(req, tid),
 		markAsRead(req, tid),
@@ -166,6 +168,14 @@ async function buildBreadcrumbs(topicData) {
 	topicData.breadcrumbs = parentCrumbs.concat(breadcrumbs);
 }
 
+async function addOldCategory(topicData, userPrivileges) {
+	if (userPrivileges.isAdminOrMod && topicData.oldCid) {
+		topicData.oldCategory = await categories.getCategoryFields(
+			topicData.oldCid, ['cid', 'name', 'icon', 'bgColor', 'color', 'slug']
+		);
+	}
+}
+
 async function addTags(topicData, req, res) {
 	const postIndex = parseInt(req.params.post_index, 10) || 0;
 	const postAtIndex = topicData.posts.find(p => parseInt(p.index, 10) === parseInt(Math.max(0, postIndex - 1), 10));