[Translatable] Fix property existence check at TranslatableListener::getTranslatableLocale()

Author: phansys

CHANGELOG.md

@@ -28,6 +28,7 @@ a release.
 ### Fixed
 - Sortable: Fix return value check of Comparable interface (#2541)
 - Uploadable: Retrieve the correct metadata when uploading entities of different classes (#2071)
+- Translatable: Fix property existence check at `TranslatableListener::getTranslatableLocale()`
 
 ### Deprecated
 - In order to close the API, `@final` and `@internal` annotations were added to all non base classes, which means that extending

phpstan-baseline.neon

@@ -510,11 +510,6 @@ parameters:
 			count: 4
 			path: src/Translatable/TranslatableListener.php
 
-		-
-			message: "#^Negated boolean expression is always false\\.$#"
-			count: 1
-			path: src/Translatable/TranslatableListener.php
-
 		-
 			message: "#^Call to an undefined method Gedmo\\\\Tree\\\\Strategy\\:\\:updateNode\\(\\)\\.$#"
 			count: 1

src/Translatable/TranslatableListener.php

@@ -345,19 +345,17 @@ public function getListenerLocale()
     public function getTranslatableLocale($object, $meta, $om = null)
     {
         $locale = $this->locale;
-        if (isset(self::$configurations[$this->name][$meta->getName()]['locale'])) {
-            /** @var \ReflectionClass $class */
+        $configurationLocale = self::$configurations[$this->name][$meta->getName()]['locale'] ?? null;
+        if (null !== $configurationLocale) {
             $class = $meta->getReflectionClass();
-            $reflectionProperty = $class->getProperty(self::$configurations[$this->name][$meta->getName()]['locale']);
-            if (!$reflectionProperty) {
-                $column = self::$configurations[$this->name][$meta->getName()]['locale'];
-
-                throw new \Gedmo\Exception\RuntimeException("There is no locale or language property ({$column}) found on object: {$meta->getName()}");
+            if (!$class->hasProperty($configurationLocale)) {
+                throw new \Gedmo\Exception\RuntimeException("There is no locale or language property ({$configurationLocale}) found on object: {$meta->getName()}");
             }
+            $reflectionProperty = $class->getProperty($configurationLocale);
             $reflectionProperty->setAccessible(true);
             $value = $reflectionProperty->getValue($object);
             if (is_object($value) && method_exists($value, '__toString')) {
-                $value = (string) $value;
+                $value = $value->__toString();
             }
             if ($this->isValidLocale($value)) {
                 $locale = $value;