diff --git a/app/config/config.yml b/app/config/config.yml
index 9cb2514..b502b3e 100644
--- a/app/config/config.yml
+++ b/app/config/config.yml
@@ -6,6 +6,9 @@ imports:
 framework:
     #esi:             ~
     translator:      { fallbacks: ["%locale%"] }
+    serializer:
+        #enabled: true
+        enable_annotations: true
     secret:          "%secret%"
     router:
         resource: "%kernel.root_dir%/config/routing.yml"
diff --git a/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Comment.php b/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Comment.php
index 119794d..7d3836b 100644
--- a/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Comment.php
+++ b/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Comment.php
@@ -4,6 +4,7 @@ namespace Skobkin\Bundle\PointToolsBundle\Entity\Blogs;
 
 use Doctrine\ORM\Mapping as ORM;
 use Skobkin\Bundle\PointToolsBundle\Entity\User;
+use Symfony\Component\Serializer\Annotation as Serializer;
 
 /**
  * Comment
@@ -18,6 +19,8 @@ class Comment
     /**
      * @var integer
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\Column(name="id", type="integer")
      * @ORM\Id
      */
@@ -26,6 +29,8 @@ class Comment
     /**
      * @var string
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\Column(name="text", type="text")
      */
     private $text;
@@ -33,6 +38,8 @@ class Comment
     /**
      * @var \DateTime
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\Column(name="created_at", type="datetime")
      */
     private $createdAt;
@@ -40,6 +47,8 @@ class Comment
     /**
      * @var boolean
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\Column(name="is_rec", type="boolean")
      */
     private $rec;
@@ -47,6 +56,8 @@ class Comment
     /**
      * @var bool
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\Column(name="is_deleted", type="boolean")
      */
     private $deleted = false;
@@ -55,7 +66,7 @@ class Comment
      * @var Post
      *
      * @ORM\Id
-     * @ORM\ManyToOne(targetEntity="Skobkin\Bundle\PointToolsBundle\Entity\Blogs\Post")
+     * @ORM\ManyToOne(targetEntity="Skobkin\Bundle\PointToolsBundle\Entity\Blogs\Post", inversedBy="comments")
      * @ORM\JoinColumn(name="post_id")
      */
     private $post;
@@ -63,6 +74,8 @@ class Comment
     /**
      * @var User
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\ManyToOne(targetEntity="Skobkin\Bundle\PointToolsBundle\Entity\User")
      * @ORM\JoinColumn(name="author_id")
      */
@@ -71,6 +84,8 @@ class Comment
     /**
      * @var Comment|null
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\ManyToOne(targetEntity="Skobkin\Bundle\PointToolsBundle\Entity\Blogs\Comment")
      * @ORM\JoinColumn(name="to_comment_id", nullable=true)
      */
diff --git a/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Post.php b/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Post.php
index 60a955d..01ffc19 100644
--- a/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Post.php
+++ b/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Post.php
@@ -5,6 +5,7 @@ namespace Skobkin\Bundle\PointToolsBundle\Entity\Blogs;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\Mapping as ORM;
 use Skobkin\Bundle\PointToolsBundle\Entity\User;
+use Symfony\Component\Serializer\Annotation as Serializer;
 
 /**
  * Post
@@ -23,6 +24,8 @@ class Post
     /**
      * @var int
      *
+     * @Serializer\Groups({"posts_list", "post_show"})
+     *
      * @ORM\Column(name="id", type="string", length=16)
      * @ORM\Id
      */
@@ -31,6 +34,8 @@ class Post
     /**
      * @var string
      *
+     * @Serializer\Groups({"posts_list", "post_show"})
+     *
      * @ORM\Column(name="text", type="text")
      */
     private $text;
@@ -38,6 +43,8 @@ class Post
     /**
      * @var \DateTime
      *
+     * @Serializer\Groups({"posts_list", "post_show"})
+     *
      * @ORM\Column(name="created_at", type="datetime")
      */
     private $createdAt;
@@ -45,6 +52,8 @@ class Post
     /**
      * @var string
      *
+     * @Serializer\Groups({"posts_list", "post_show"})
+     *
      * @ORM\Column(name="type", type="string", length=6)
      */
     private $type;
@@ -66,6 +75,8 @@ class Post
     /**
      * @var User
      *
+     * @Serializer\Groups({"posts_list", "post_show"})
+     *
      * @ORM\ManyToOne(targetEntity="Skobkin\Bundle\PointToolsBundle\Entity\User")
      * @ORM\JoinColumn(name="author")
      */
@@ -74,6 +85,8 @@ class Post
     /**
      * @var Tag[]|ArrayCollection
      *
+     * @Serializer\Groups({"posts_list", "post_show"})
+     *
      * @ORM\ManyToMany(targetEntity="Skobkin\Bundle\PointToolsBundle\Entity\Blogs\Tag", fetch="EXTRA_LAZY")
      * @ORM\JoinTable(name="posts.posts_tags",
      *      joinColumns={@ORM\JoinColumn(name="post_id")},
@@ -84,6 +97,10 @@ class Post
 
     /**
      * @var Comment[]|ArrayCollection
+     *
+     * @Serializer\Groups({"post_show"})
+     *
+     * @ORM\OneToMany(targetEntity="Skobkin\Bundle\PointToolsBundle\Entity\Blogs\Comment", mappedBy="post")
      */
     private $comments;
 
diff --git a/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Tag.php b/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Tag.php
index 302e37e..0cd1b56 100644
--- a/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Tag.php
+++ b/src/Skobkin/Bundle/PointToolsBundle/Entity/Blogs/Tag.php
@@ -3,6 +3,7 @@
 namespace Skobkin\Bundle\PointToolsBundle\Entity\Blogs;
 
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Serializer\Annotation as Serializer;
 
 /**
  * Tag
@@ -26,6 +27,8 @@ class Tag
     /**
      * @var string
      *
+     * @Serializer\Groups("post_show")
+     *
      * @ORM\Column(name="text", type="text", unique=true)
      */
     private $text;