fix type error

Repository/ZoneRepository.php

@@ -23,13 +23,20 @@ class ZoneRepository extends \Doctrine\ORM\EntityRepository {
                 return $res[0];
             }
             $exp = explode("_", $locale);
-    
+            
         }
         
     }
     
     private function searchLocale($locale) {
-        return $this->createQueryBuilder("z")->where("LOWER(z.locale) LIKE :locale")->setParameter("locale", strtolower($locale))->getQuery()->getResult();
+        return $this->createQueryBuilder("z")
+            ->where("LOWER(z.locale) LIKE :locale")
+            ->setParameter("locale", strtolower($locale))
+            ->getQuery()
+            ->useQueryCache(TRUE)
+            ->useResultCache(TRUE)
+            ->setResultCacheLifetime(100)
+            ->getResult();
         
     }
 }

TranslationService/Translation.php

@@ -53,8 +53,8 @@ class Translation {
         if ($translated = $this->repository_translation->findOneBy(["translationKey" => $key, "locale" => $locale, "domain" => $domain])) {
             return $translated->getTranslationValue();
         } else {
-            if (count(explode("_", $locale)) > 1) {
-                $locale = $this->findLocale(implode("_", array_splice(explode("_", $locale), 0, -1)));
+            if (count(explode("_", $locale->getLocale())) > 1) {
+                $locale = $this->findLocale(implode("_", array_splice(explode("_", $locale->getLocale()), 0, -1)));
                 if ($locale) return $this->findTranslation($key, $locale, $domain);
             }
         }