Fix translations inside legacy pages.

Add legacy language in platform settings.

main/inc/lib/internationalization.lib.php

@@ -75,10 +75,13 @@ function get_lang($variable)
 
     // Using symfony
     $defaultDomain = 'messages';
+    $locale = api_get_interface_language();
+
     $translated = Container::getTranslator()->trans(
         $variable,
         [],
-        $defaultDomain
+        $defaultDomain,
+        $locale
     );
 
     if ($translated === $variable) {
@@ -86,7 +89,8 @@ function get_lang($variable)
         $translated = Container::getTranslator()->trans(
             "lang$variable",
             [],
-            $defaultDomain
+            $defaultDomain,
+            $locale
         );
 
         if ($translated === "lang$variable") {
@@ -143,7 +147,7 @@ function api_purify_language_id($language)
  */
 function api_get_language_isocode()
 {
-    return Container::getTranslator()->getLocale();
+    return Container::getRequest()->getLocale();
 }
 
 /**

src/CoreBundle/Settings/LanguageSettingsSchema.php

@@ -11,8 +11,6 @@ use Symfony\Component\Form\FormBuilderInterface;
 
 /**
  * Class LanguageSettingsSchema.
- *
- * @package Chamilo\CoreBundle\Settings
  */
 class LanguageSettingsSchema extends AbstractSettingsSchema
 {
@@ -59,8 +57,16 @@ class LanguageSettingsSchema extends AbstractSettingsSchema
             'Course language' => 'course_lang', // language of the current course
         ];
 
+        // @todo replace with a call to the Language repository.
+        $languages = api_get_languages();
+        $list = [];
+        foreach ($languages as $index => $value) {
+            $list[html_entity_decode($value)] = $index;
+        }
+
+        $options = ['choices' => $list, 'choice_loader' => null];
         $builder
-            ->add('platform_language', LanguageType::class)
+            ->add('platform_language', LanguageType::class, $options)
             ->add('allow_use_sub_language', YesNoType::class)
             ->add('auto_detect_language_custom_pages', YesNoType::class)
             ->add('show_different_course_language', YesNoType::class)