add files created from samir

src/Form/AssignRoleForm.php

@@ -0,0 +1,30 @@
+<?php 
+// in src/Form/AssignRoleForm.php
+namespace App\Form;
+
+use Cake\Form\Form;
+use Cake\Form\Schema;
+use Cake\Validation\Validator;
+
+class AssignRoleForm extends Form
+{
+
+    protected function _buildSchema(Schema $schema)
+    {
+        return $schema->addField('role_id', ['type' => 'string']);
+    }
+
+    function validationDefault(Validator $validator)
+    {
+      $validator->setProvider('custom', 'App\Model\Validation\GenericValidation');
+    
+        return $validator;
+    }
+   
+
+    protected function _execute(array $data)
+    {
+        // Send an email.
+        return true;
+    }
+}