Issue #246 - Get l10n started/working

Author: Brian R. Bondy

app.js

@@ -4,6 +4,7 @@ const HOUR = 3600000,
   DAY = 24 * HOUR;
 
 let express = require('express'),
+  I18n = require('i18n-2'),
   async = require('async'),
   routes = require('./routes'),
   stylus = require('stylus'),
@@ -20,6 +21,22 @@ appController.initPromise().done(function() {
   let config = configController.config;
   configController.print();
 
+  app.configure(function() {
+    // Attach the i18n property to the express request object
+    // And attach helper methods for use in templates
+    I18n.expressBind(app, {
+        // setup some locales - other locales default to en silently
+        locales: ['en', 'fr'],
+        // change the cookie name from 'lang' to 'locale'
+        cookieName: 'locale'
+    });
+
+    app.use(function(req, res, next) {
+        req.i18n.setLocaleFromCookie();
+        next();
+    });
+  });
+
   app.set('views', __dirname + '/views');
   app.set('view engine', 'jade');
   app.set('view options', { layout: false, pretty: true });

controllers/lessonController.js

@@ -1,6 +1,8 @@
 "use strict";
 
 let redisController = require('../controllers/redisController.js'),
+  _ = require('underscore'),
+  I18n = require('i18n-2'),
   Promise = require('promise');
 
 /**
@@ -15,6 +17,7 @@ function loadIntoDB(callback) {
  */
 function loadFromDB(callback) {
   redisController.getAllPromise("category").done(function onSuccess(cat) {
+    l18n(cat);
     exports.categories  = cat;
     exports.categories.sort(redisController.sortByPriority);
     exports._categoriesByTag = [];
@@ -24,6 +27,30 @@ function loadFromDB(callback) {
   });
 };
 
+function l18n(categories) {
+  let i18n = new I18n( {
+    // setup some locales - other locales default to en silently
+    locales: ['en', 'fr'],
+    // change the cookie name from 'lang' to 'locale'
+    cookieName: 'locale'
+  });//TODO find a better place for this
+
+  _.each(categories, function(c) {
+    i18n.__(c.title);
+    i18n.__(c.description);
+    _.each(c.videos, function(v) {
+      i18n.__(v.title);
+      i18n.__(v.description);
+      _.each(v.assertions, function(a) {
+        i18n.__(a.title);
+        _.each(a.hints, function(h) {
+          i18n.__(h);
+        });
+      });
+    });
+  });
+}
+
 
 /**
  * Loads in overall lesson stats into exports.stats