koa-locales

koa locales, i18n solution for koa:

1. All locales resources location on options.dirs.
2. resources file supports: *.js, *.json and *.properties, see examples.
3. One api: __(key[, value, ...]).
4. Auto detect request locale from query, cookie and header: Accept-Language.

Installation

1$ npm install koa-locales --save

Quick start

1var koa = require('koa');
2var locales = require('koa-locales');
3
4var app = koa();
5var options = {
6  dirs: [__dirname + '/locales', __dirname + '/foo/locales'],
7};
8locales(app, options);

API Reference

locales(app, options)

Patch locales functions to koa app.

• {Application} app: koa app instance.
• {Object} options: optional params.
  • {String} functionName: locale function name patch on koa context. Optional, default is __.
  • {String} dirs: locales resources store directories. Optional, default is ['$PWD/locales'].
  • {String} defaultLocale: default locale. Optional, default is en-US.
  • {String} queryField: locale field name on query. Optional, default is locale.
  • {String} cookieField: locale field name on cookie. Optional, default is locale.
  • {Object} localeAlias: locale cookie value map. Optional, default is {}.
  • {String|Number} cookieMaxAge: set locale cookie value max age. Optional, default is 1y, expired after one year.

1locales({
2  app: app,
3  dirs: [__dirname + '/app/locales'],
4  defaultLocale: 'zh-CN',
5}));

context.__(key[, value1[, value2, ...]])

Get current request locale text.

1function* home() {
2  this.body = {
3    message: this.__('Hello, %s', 'fengmk2'),
4  };
5}

Examples:

1__('Hello, %s. %s', 'fengmk2', 'koa rock!')
2=>
3'Hello fengmk2. koa rock!'
4
5__('{0} {0} {1} {1} {1}', ['foo', 'bar'])
6=>
7'foo foo bar bar bar'
8
9__('{a} {a} {b} {b} {b}', {a: 'foo', b: 'bar'})
10=>
11'foo foo bar bar bar'

Usage on template

1this.state.__ = this.__.bind(this);

nunjucks example:

1{{ __('Hello, %s', user.name) }}

License

MIT