[Form] Fix constraints could be null if not set

DZunke · DZunke · commit b44e67d26622 · 2015-12-08T09:03:22.000+01:00
If the form options has no key for constraints the default should be an empty array to be ignored by the loop.
diff --git a/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php b/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php
@@ -45,7 +45,7 @@ public function validate($form, Constraint $constraint)
 
             // Validate the data against the constraints defined
             // in the form
-            $constraints = $config->getOption('constraints');
+            $constraints = $config->getOption('constraints', array());
             foreach ($constraints as $constraint) {
                 foreach ($groups as $group) {
                     if (in_array($group, $constraint->groups)) {
