Introduction
This is a simple i18next backend to be used in the browser. It will load resources from a backend server using the xhr API.
Getting started
Source can be loaded via npm, bower or downloaded from this repo.
# npm package
$ npm install i18next-xhr-backend
# bower
$ bower install i18next-xhr-backend
Wiring up:
import i18next from 'i18next';
import XHR from 'i18next-xhr-backend';
i18next.use(XHR).init(i18nextOptions);
- As with all modules you can either pass the constructor function (class) to the i18next.use or a concrete instance.
- If you don't use a module loader it will be added to
window.i18nextXHRBackend
Backend Options
{
// path where resources get loaded from, or a function
// returning a path:
// function(lngs, namespaces) { return customPath; }
// the returned path will interpolate lng, ns if provided like giving a static path
loadPath: '/locales/{{lng}}/{{ns}}.json',
// path to post missing resources
addPath: 'locales/add/{{lng}}/{{ns}}',
// your backend server supports multiloading
// /locales/resources.json?lng=de+en&ns=ns1+ns2
// Adapter is needed to enable MultiLoading https://github.com/i18next/i18next-multiload-backend-adapter
// Returned JSON structure in this case is
// {
// lang : {
// namespaceA: {},
// namespaceB: {},
// ...etc
// }
// }
allowMultiLoading: false, // set loadPath: '/locales/resources.json?lng={{lng}}&ns={{ns}}' to adapt to multiLoading
// parse data after it has been fetched
// in example use https://www.npmjs.com/package/json5
// here it removes the letter a from the json (bad idea)
parse: function(data) { return data.replace(/a/g, ''); },
//parse data before it has been sent by addPath
parsePayload: function(namespace, key, fallbackValue) { return { key } },
// allow cross domain requests
crossDomain: false,
// allow credentials on cross domain requests
withCredentials: false,
// overrideMimeType sets request.overrideMimeType("application/json")
overrideMimeType: false,
// custom request headers sets request.setRequestHeader(key, value)
customHeaders: {
authorization: 'foo',
// ...
},
// define a custom xhr function
// can be used to support XDomainRequest in IE 8 and 9
//
// 'url' will be passed the value of 'loadPath'
// 'options' will be this entire options object
// 'callback' is a function that takes two parameters, 'data' and 'xhr'.
// 'data' should be the key:value translation pairs for the
// requested language and namespace, or null in case of an error.
// 'xhr' should be a status object, e.g. { status: 200 }
// 'data' will be a key:value object used when saving missing translations
ajax: function (url, options, callback, data) {},
// adds parameters to resource URL. 'example.com' -> 'example.com?v=1.3.5'
queryStringParams: { v: '1.3.5' }
}
Options can be passed in:
preferred - by setting options.backend in i18next.init:
import i18next from 'i18next';
import XHR from 'i18next-xhr-backend';
i18next.use(XHR).init({
backend: options,
});
on construction:
import XHR from 'i18next-xhr-backend';
const xhr = new XHR(null, options);
via calling init:
import XHR from 'i18next-xhr-backend';
const xhr = new XHR();
xhr.init(null, options);
Misc
TypeScript definitions
-
Install from
@types(for TypeScript v2 and later):npm install --save-dev @types/i18next-xhr-backend -
Install from
typings:typings install --save --global dt~i18next-xhr-backend