re #25 allow rules edition + assignment

src/User/Validator/RbacRuleNameValidator.php

@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of the 2amigos/yii2-usuario project.
+ *
+ * (c) 2amigOS! <http://2amigos.us/>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Da\User\Validator;
+
+use Da\User\Traits\AuthManagerAwareTrait;
+use Yii;
+use yii\rbac\Rule;
+use yii\validators\Validator;
+
+class RbacRuleNameValidator extends Validator
+{
+    use AuthManagerAwareTrait;
+
+    /**
+     * @var
+     */
+    public $previousName;
+
+    /**
+     * @inheritdoc
+     */
+    protected function validateValue($value)
+    {
+        if ($this->previousName != $value) {
+            $rule = $this->getAuthManager()->getRule($value);
+
+            if ($rule instanceof Rule) {
+                return [Yii::t('usuario', 'Rule name {0} is already in use', $value), []];
+            }
+        }
+        return null;
+    }
+}