CODEWITHSUNDEEP
node.jsinternationalization
John
John

Reputation: 4991

Node js permanently locale changes

I'm using Expressjs and i18n for my node js application to manage the multilanguage.

Here is my i18n configuration :

i18n.js

var i18n = require('i18n');

i18n.configure({

  locales:['en', 'fr'],

  directory: __dirname + '/../locales',

  defaultLocale: 'en',

  cookie: 'lang',
});

module.exports = function(req, res, next) {

  i18n.init(req, res);
  res.locals.__= res.__;

  var current_locale = i18n.getLocale();

  return next();
};

server.js

var i18n = require('./configs/i18n');
 ...

app.use(i18n);

Actually if I want to change the locale settings I have to do that for each routes :

app.get('/index', function(req, res){
    res.setLocale('fr')

    res.render('pages/index');
});

It is possible to use setLocale() once and it will permanently change the locale ?

And what is the best practice ? Should I specify the language inside my routes everytime ? E.g :

app.get('/:locale/index', function(req, res){
    res.setLocale(req.params.locale)

    res.render('pages/index');
});

app.get('/:locale/anotherroute', function(req, res){
    res.setLocale(req.params.locale)

    res.render('pages/anotherroute');
});

Or I have to store the locale in my database for each user ?

Upvotes: 0

Views: 5884

Answers (1)

F. Kauder
F. Kauder

Reputation: 889

You can use middlewares to avoid the repetition (place this code before your router) :

// Fixed locale
app.use(function (req, res, next) {
  res.setLocale('fr');
  next();
});

// Locale get by URL parameters
app.use(function (req, res, next) {
  if (req.params && req.params.locale){
      res.setLocale(req.params.locale);
  }
  next();
});

Personally, I prefer to store the local setting in database, it avoids to weighing the request with not necessary data.

Another solution is to set the language with HTTP headers Content-Language and Accept-Language and get it with req.acceptsLanguage().

Upvotes: 2

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