From 8af64ba98415447ac9fa31f105af216ee0ef3799 Mon Sep 17 00:00:00 2001
From: barisusakli <barisusakli@gmail.com>
Date: Thu, 17 Sep 2015 13:37:04 -0400
Subject: [PATCH] closes #3626

---
 src/categories/delete.js      |  5 ++---
 src/controllers/categories.js |  5 +----
 src/controllers/topics.js     |  5 +++++
 src/threadTools.js            | 20 ++++++--------------
 src/topics/delete.js          | 24 +++++++++++++++++++++++-
 5 files changed, 37 insertions(+), 22 deletions(-)

diff --git a/src/categories/delete.js b/src/categories/delete.js
index 7bfe03a005..431b3f8b40 100644
--- a/src/categories/delete.js
+++ b/src/categories/delete.js
@@ -4,15 +4,14 @@ var async = require('async'),
 	db = require('../database'),
 	batch = require('../batch'),
 	plugins = require('../plugins'),
-	threadTools = require('../threadTools');
-
+	topics = require('../topics');
 
 module.exports = function(Categories) {
 
 	Categories.purge = function(cid, callback) {
 		batch.processSortedSet('cid:' + cid + ':tids', function(tids, next) {
 			async.eachLimit(tids, 10, function(tid, next) {
-				threadTools.purge(tid, 0, next);
+				topics.purgePostsAndTopic(tid, next);
 			}, next);
 		}, {alwaysStartAt: 0}, function(err) {
 			if (err) {
diff --git a/src/controllers/categories.js b/src/controllers/categories.js
index 438e970c99..32553088a1 100644
--- a/src/controllers/categories.js
+++ b/src/controllers/categories.js
@@ -91,9 +91,6 @@ categoriesController.get = function(req, res, callback) {
 	async.waterfall([
 		function(next) {
 			async.parallel({
-				exists: function(next) {
-					categories.exists(cid, next);
-				},
 				categoryData: function(next) {
 					categories.getCategoryFields(cid, ['slug', 'disabled', 'topic_count'], next);
 				},
@@ -108,7 +105,7 @@ categoriesController.get = function(req, res, callback) {
 		function(results, next) {
 			userPrivileges = results.privileges;
 
-			if (!results.exists || (results.categoryData && parseInt(results.categoryData.disabled, 10) === 1)) {
+			if (!results.categoryData.slug || (results.categoryData && parseInt(results.categoryData.disabled, 10) === 1)) {
 				return callback();
 			}
 
diff --git a/src/controllers/topics.js b/src/controllers/topics.js
index 93ab192823..75f8a92b9d 100644
--- a/src/controllers/topics.js
+++ b/src/controllers/topics.js
@@ -40,6 +40,11 @@ topicsController.get = function(req, res, callback) {
 			}, next);
 		},
 		function (results, next) {
+
+			if (!results.topic.slug) {
+				return callback();
+			}
+
 			userPrivileges = results.privileges;
 
 			if (!userPrivileges.read || (parseInt(results.topic.deleted, 10) && !userPrivileges.view_deleted)) {
diff --git a/src/threadTools.js b/src/threadTools.js
index 9ae4e3d921..37a2b1b721 100644
--- a/src/threadTools.js
+++ b/src/threadTools.js
@@ -66,7 +66,7 @@ var async = require('async'),
 	}
 
 	ThreadTools.purge = function(tid, uid, callback) {
-		var topic;
+		var cid;
 		async.waterfall([
 			function(next) {
 				topics.exists(tid, next);
@@ -82,23 +82,15 @@ var async = require('async'),
 					return next(new Error('[[error:no-privileges]]'));
 				}
 
-				topics.getTopicFields(tid, ['mainPid', 'cid'], next);
+				topics.getTopicField(tid, 'cid', next);
 			},
-			function (_topic, next) {
-				topic = _topic;
+			function (_cid, next) {
+				cid = _cid;
 
-				batch.processSortedSet('tid:' + tid + ':posts', function(pids, next) {
-					async.eachLimit(pids, 10, posts.purge, next);
-				}, {alwaysStartAt: 0}, next);
-			},
-			function (next) {
-				posts.purge(topic.mainPid, next);
-			},
-			function (next) {
-				topics.purge(tid, next);
+				topics.purgePostsAndTopic(tid, next);
 			},
 			function (next) {
-				next(null, {tid: tid, cid: topic.cid, uid: uid});
+				next(null, {tid: tid, cid: cid, uid: uid});
 			}
 		], callback);
 	};
diff --git a/src/topics/delete.js b/src/topics/delete.js
index 30c926e1e5..e194d9cd23 100644
--- a/src/topics/delete.js
+++ b/src/topics/delete.js
@@ -5,7 +5,8 @@ var async = require('async'),
 
 	user = require('../user'),
 	posts = require('../posts'),
-	plugins = require('../plugins');
+	plugins = require('../plugins'),
+	batch = require('../batch');
 
 
 module.exports = function(Topics) {
@@ -80,6 +81,27 @@ module.exports = function(Topics) {
 		});
 	};
 
+	Topics.purgePostsAndTopic = function(tid, callback) {
+		var mainPid;
+		async.waterfall([
+			function (next) {
+				Topics.getTopicField(tid, 'mainPid', next);
+			},
+			function (_mainPid, next) {
+				mainPid = _mainPid;
+				batch.processSortedSet('tid:' + tid + ':posts', function(pids, next) {
+					async.eachLimit(pids, 10, posts.purge, next);
+				}, {alwaysStartAt: 0}, next);
+			},
+			function (next) {
+				posts.purge(mainPid, next);
+			},
+			function (next) {
+				Topics.purge(tid, next);
+			}
+		], callback);
+	};
+
 	Topics.purge = function(tid, callback) {
 		async.parallel([
 			function(next) {