* command and user actions added

* language model added

src/App/Action/Comment/GetAction.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Action\Comment;
+
+use App\Service\EntityServiceInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Zend\Diactoros\Response\JsonResponse;
+
+class GetAction
+{
+
+    /**
+     * @var EntityServiceInterface
+     */
+    private $entityService;
+
+    public function __construct(EntityServiceInterface $entityService)
+    {
+        $this->entityService = $entityService;
+    }
+
+    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next = null)
+    {
+        $id     = $request->getAttribute('id');
+        $entity = $this->entityService->get($id);
+
+        if (null === $entity) {
+            $ret = new JsonResponse(false);
+            return $ret->withStatus(404);
+        }
+
+        return new JsonResponse($entity);
+    }
+}