node-polyglot-middleware

express middleware for node-polyglot (polyglot.js from airbnb)

Installation

$ npm install --save node-polyglot-middleware

Usage

• node-polyglot-middleware prioritize static phrases (options.phrases) over callback function (options.getPhrases)
• do not provide static phrases if you want to fetch phrases dynamically using callback function

var polyglot = require('node-polyglot-middleware');
var express = require('express');
var app = express();

var options = {
    phrases: { // using static phrases
        hello: 'Hello'
    },
    getPhrases(done) {
        request.get('http://example.com/api/to/retrieve/phrases').then((phrases) => {
            return done(null, phrases);
        }).catch((err) => {
            return done(err);
        });
    }
};

// using static phrases
app.use(polyglot({hello: 'Hello'}));

// fetching phrases dynamically
app.use(polyglot(function(done) {
    request.get('http://example.com/api/to/retrieve/phrases').then((phrases) => {
        return done(null, phrases);
    }).catch((err) => {
        return done(err);
    });
}));

// when you have to use req param
app.use(polyglot(), (req, res, next) => {
    var locale = req.cookies.locale || 'en';
    request.get('http://example.com/api/to/retrieve/phrases/' + locale).then((phrases) => {
        req.polyglot.extend(phrases);
        return next();
    }).catch((err) => {
        return next(err);
    });
});

// after polyglot middleware is specified,
// you can use req.polyglot in the following middlewares and routers
router.get('/message', function(req, res) {
    var hello = req.polyglot.t('hello');
    return res.json({message: hello});
});

License

MIT © Dongwon Lim