Feature: add cc users in workflow: add constraint validation on EntityWorkflowStep

src/Bundle/ChillMainBundle/Validator/Constraints/Entity/WorkflowStepUsers.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\MainBundle\Validator\Constraints\Entity;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ */
+class WorkflowStepUsers extends Constraint
+{
+    public string $message = 'The user in cc cannot be a dest user in the same workflow step';
+
+    public function getTargets()
+    {
+        return [self::CLASS_CONSTRAINT];
+    }
+}