closes #6308

public/language/en-GB/user.json

@@ -103,7 +103,7 @@
 	"topics_per_page": "Topics per Page",
 	"posts_per_page": "Posts per Page",
 	"max_items_per_page": "Maximum %1",
-
+	"acp_language": "Admin Page Language",
 	"notification_sounds" : "Play a sound when you receive a notification",
 	"notifications_and_sounds": "Notifications & Sounds",
 	"incoming-message-sound": "Incoming message sound",

src/controllers/accounts/settings.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var async = require('async');
+var _ = require('lodash');
 
 var user = require('../../user');
 var languages = require('../../languages');
@@ -40,6 +41,9 @@ settingsController.get = function (req, res, callback) {
 		function (results, next) {
 			userData.settings = results.settings;
 			userData.languages = results.languages;
+			if (userData.isAdmin && userData.isSelf) {
+				userData.acpLanguages = _.cloneDeep(results.languages);
+			}
 
 			var types = [
 				'notification',
@@ -135,6 +139,12 @@ settingsController.get = function (req, res, callback) {
 				language.selected = language.code === userData.settings.userLang;
 			});
 
+			if (userData.isAdmin && userData.isSelf) {
+				userData.acpLanguages.forEach(function (language) {
+					language.selected = language.code === userData.settings.acpLang;
+				});
+			}
+
 			var notifFreqOptions = [
 				'all',
 				'everyTen',

src/controllers/api.js

@@ -86,6 +86,7 @@ apiController.loadConfig = function (req, callback) {
 			config.topicsPerPage = settings.topicsPerPage;
 			config.postsPerPage = settings.postsPerPage;
 			config.userLang = (req.query.lang ? validator.escape(String(req.query.lang)) : null) || settings.userLang || config.defaultLang;
+			config.acpLang = (req.query.lang ? validator.escape(String(req.query.lang)) : null) || settings.acpLang;
 			config.openOutgoingLinksInNewTab = settings.openOutgoingLinksInNewTab;
 			config.topicPostSort = settings.topicPostSort || config.topicPostSort;
 			config.categoryTopicSort = settings.categoryTopicSort || config.categoryTopicSort;

src/languages.js

@@ -71,12 +71,13 @@ Languages.list = function (callback) {
 				if (err) {
 					return next(err);
 				}
+				var lang;
 				try {
-					var lang = JSON.parse(file);
+					lang = JSON.parse(file);
-					next(null, lang);
 				} catch (e) {
-					next(e);
+					return next(e);
 				}
+				next(null, lang);
 			});
 		}, function (err, languages) {
 			if (err) {

src/middleware/admin.js

@@ -38,7 +38,7 @@ module.exports = function (middleware) {
 			plugins: [],
 			authentication: [],
 		};
-
+		res.locals.config = res.locals.config || {};
 		async.waterfall([
 			function (next) {
 				async.parallel({
@@ -51,9 +51,6 @@ module.exports = function (middleware) {
 					custom_header: function (next) {
 						plugins.fireHook('filter:admin.header.build', custom_header, next);
 					},
-					config: function (next) {
-						controllers.api.getConfig(req, res, next);
-					},
 					configs: function (next) {
 						meta.configs.list(next);
 					},
@@ -64,8 +61,6 @@ module.exports = function (middleware) {
 				userData.uid = req.uid;
 				userData['email:confirmed'] = parseInt(userData['email:confirmed'], 10) === 1;
 
-				res.locals.config = results.config;
-
 				var acpPath = req.path.slice(1).split('/');
 				acpPath.forEach(function (path, i) {
 					acpPath[i] = path.charAt(0).toUpperCase() + path.slice(1);
@@ -73,9 +68,9 @@ module.exports = function (middleware) {
 				acpPath = acpPath.join(' > ');
 
 				var templateValues = {
-					config: results.config,
+					config: res.locals.config,
-					configJSON: jsesc(JSON.stringify(results.config), { isScriptContext: true }),
+					configJSON: jsesc(JSON.stringify(res.locals.config), { isScriptContext: true }),
-					relative_path: results.config.relative_path,
+					relative_path: res.locals.config.relative_path,
 					adminConfigJSON: encodeURIComponent(JSON.stringify(results.configs)),
 					user: userData,
 					userJSON: jsesc(JSON.stringify(userData), { isScriptContext: true }),

src/middleware/render.js

@@ -120,6 +120,9 @@ module.exports = function (middleware) {
 
 	function translate(str, req, res, next) {
 		var language = (res.locals.config && res.locals.config.userLang) || 'en-GB';
+		if (res.locals.renderAdminHeader) {
+			language = (res.locals.config && res.locals.config.acpLang) || 'en-GB';
+		}
 		language = req.query.lang ? validator.escape(String(req.query.lang)) : language;
 		translator.translate(str, language, function (translated) {
 			next(null, translator.unescape(translated));

src/user/settings.js

@@ -70,6 +70,7 @@ module.exports = function (User) {
 				settings.topicsPerPage = Math.min(settings.topicsPerPage ? parseInt(settings.topicsPerPage, 10) : defaultTopicsPerPage, defaultTopicsPerPage);
 				settings.postsPerPage = Math.min(settings.postsPerPage ? parseInt(settings.postsPerPage, 10) : defaultPostsPerPage, defaultPostsPerPage);
 				settings.userLang = settings.userLang || meta.config.defaultLang || 'en-GB';
+				settings.acpLang = settings.acpLang || settings.userLang;
 				settings.topicPostSort = getSetting(settings, 'topicPostSort', 'oldest_to_newest');
 				settings.categoryTopicSort = getSetting(settings, 'categoryTopicSort', 'newest_to_oldest');
 				settings.followTopicsOnCreate = parseInt(getSetting(settings, 'followTopicsOnCreate', 1), 10) === 1;
@@ -118,6 +119,7 @@ module.exports = function (User) {
 			topicsPerPage: Math.min(data.topicsPerPage, parseInt(maxTopicsPerPage, 10) || 20),
 			postsPerPage: Math.min(data.postsPerPage, parseInt(maxPostsPerPage, 10) || 20),
 			userLang: data.userLang || meta.config.defaultLang,
+			acpLang: data.acpLang || meta.config.defaultLang,
 			followTopicsOnCreate: data.followTopicsOnCreate,
 			followTopicsOnReply: data.followTopicsOnReply,
 			restrictChat: data.restrictChat,