Enh: Improved support of languages unsupported Yii2

protected/humhub/components/i18n/I18N.php

@@ -8,8 +8,8 @@
 
 namespace humhub\components\i18n;
 
-use Yii;
 use humhub\models\forms\ChooseLanguage;
+use Yii;
 use yii\base\InvalidParamException;
 
 /**
@@ -25,6 +25,15 @@ class I18N extends \yii\i18n\I18N
      */
     public $messageOverwritePath = '@config/messages';
 
+    /**
+     * Languages which are not supported by Yii.
+     * To overwrite this languages, a language file called "humhub.yii.php"
+     * needs to be placed in the messages folder.
+     *
+     * @var array list of languages
+     */
+    public $unsupportedYiiLanguages = ['an'];
+
     /**
      * Automatically sets the current locale and time zone
      */
@@ -99,7 +108,7 @@ class I18N extends \yii\i18n\I18N
      */
     public function setDefaultLocale()
     {
-        $this->setLocale( Yii::$app->settings->get('defaultLanguage'));
+        $this->setLocale(Yii::$app->settings->get('defaultLanguage'));
         $this->fixLocaleCodes();
     }
 
@@ -136,6 +145,10 @@ class I18N extends \yii\i18n\I18N
             $language = 'nb-NO';
         }
 
+        if ($category === 'yii' && in_array($language, $this->unsupportedYiiLanguages)) {
+            $category = 'humhub.yii';
+        }
+
         return parent::translate($category, $message, $params, $language);
     }
 

protected/humhub/config/common.php

@@ -84,6 +84,10 @@ $config = [
                     'class' => 'yii\i18n\PhpMessageSource',
                     'basePath' => '@humhub/messages'
                 ],
+                'humhub.yii' => [
+                    'class' => 'yii\i18n\PhpMessageSource',
+                    'basePath' => '@humhub/messages'
+                ],
             ],
         ],
         'formatter' => [

protected/humhub/docs/CHANGELOG.md

@@ -9,6 +9,7 @@ HumHub Change Log
 - Fix: No e-mail summary immediately after installation
 - Enh: Added queuing for search updates of commments
 - Enh: Added queue clear option at Administration - Information
+- Enh: Improved support of languages unsupported Yii2 
 
 
 1.3.1  (August 7, 2018)

protected/humhub/messages/an/humhub.yii.php

@@ -0,0 +1,3 @@
+<?php
+
+return [];