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Languages ​

LUYA provides a powerful multi language support as we have focused on multi-lingual website very strong during the concept and development phase. In order to understand how to configure your site to fit your needs read the section below.

Keep in mind that the language property of your application is the main setting for the Yii translation system.

How to configure ​

As LUYA is developed as a modular system the languages must be configured in several parts of the system. The multi-lingual support works with or without CMS.

There is a component known as composition component which is dealing with the language settings. The component is invoked by the application boot process and changes the base URL inside the urlManager based on your configuration. If the composition is active and not hidden it will manipulate the yii\base\Application -> $language. So it can override your language from the configuration.

You always have to define the default language of your application configs:

php
'composition' => [
    'hidden' => true,
    'default' => ['langShortCode' => 'en'],
],

Now you have set the default language of the application to en and the language prefix is available and will be appended to all URLs. If hidden is enabled, it would still set the language, but would not prepend the string to every URL.

When using the CMS Module the configuration must match your configuration of the system languages (which is stored in the database) below a screen shot where the language short code en is set as default language:

set-default-language

Retrieve current language ​

There are two ways to retrieve the current active language:

MethodExample ValueDescription
Yii::$app->composition->langShortCodeenAs the name already tells, it will return the current language short code of the current page. Depending on the composition and language table configuration.
Yii::$app->languageen_ENReturns the i18n localisation value defined from locales.

Localisation with locales ​

Instead of using the locales system, we recommend you to make usage of the PHP intl extension, which is commonly available. Therefore e.g. you use Yii::$app->formatter->asDatetime($time, 'MMMM yyyy') instead of strftime("%B %Y", $date);. Take a look at the formating syntax here https://unicode-org.github.io/icu/userguide/format_parse/datetime

As the composition component can override the yii\base\Application -> $language which is the base property for all translations within a Yii system you can define localisations for each language. Localisation are usually set trough setlocale() this is what LUYA does in the luya\traits\ApplicationTrait . You can define a localisation file for each language with the luya\traits\ApplicationTrait -> $locales property, for example when language de is given it should take the de_CH.utf8 locale file:

php
'locales' => [
    'de' => 'de_CH.utf8',
    'en' => 'en_GB.utf8',
],

This is configured in the root level of your application config.

Domain Mapping ​

In order to map a given domain to language use luya\web\Composition -> $hostInfoMapping:

php
'hostInfoMapping' => [
    'http://example.us' => ['langShortCode' => 'en', 'countryShortCode' => 'us'],
    'http://example.co.uk' => ['langShortCode' => 'en', 'countryShortCode' => 'uk'],
    'http://example.de' => ['langShortCode' => 'de', 'countryShortCode' => 'de'],
],

Localisation prefix ​

php
'pattern' => '<langShortCode:[a-z]{2}>-<countryShortCode:[a-z]{2}>',
'default' => [
    'countryShortCode' => 'us',
    'langShortCode' => 'en',
],

In order to retrieve data from the composition component you can access the composition component by its keys:

php
$langShortCode = Yii::$app->composition['langShortCode'];
$countryShortCode = Yii::$app->composition['countryShortCode'];

Language Parameter for APIs ​

Since version 3.1 of LUYA Admin the ConentNegotiator correctly receives all available LUYA Admin languages. For instance, when you have setup fr, de and en, then the ContentNegotiator will listen to Vary Accept or Accept-Language Header, as well for _lang get param. If the content negotiator can detected one of the given languages in those methods, the Yii::$app->language will receive this value, which will also be used to decode/encode luya\admin\ngrest\base\NgRestModel -> $i18n attributes.

In consequences, this also means that the luya\web\Composition localisation in the URL (e.g. de/foobar) has no effect when working with APIs, either use HTTP Headers or _lang get parameter. In order restore the behavior before 3.1 which has taken the composition language path into account, you can configure luya\admin\components\AdminLanguage -> $activeShortCodeCallable, but it's not recommended.