diff --git a/backend/controllers/CommentController.php b/backend/controllers/CommentController.php
new file mode 100644
index 0000000..f001043
--- /dev/null
+++ b/backend/controllers/CommentController.php
@@ -0,0 +1,121 @@
+<?php
+
+namespace backend\controllers;
+
+use Yii;
+use common\models\Comment;
+use yii\data\ActiveDataProvider;
+use yii\web\Controller;
+use yii\web\NotFoundHttpException;
+use yii\filters\VerbFilter;
+
+/**
+ * CommentController implements the CRUD actions for Comment model.
+ */
+class CommentController extends Controller
+{
+    public function behaviors()
+    {
+        return [
+            'verbs' => [
+                'class' => VerbFilter::className(),
+                'actions' => [
+                    'delete' => ['post'],
+                ],
+            ],
+        ];
+    }
+
+    /**
+     * Lists all Comment models.
+     * @return mixed
+     */
+    public function actionIndex()
+    {
+        $dataProvider = new ActiveDataProvider([
+            'query' => Comment::find(),
+        ]);
+
+        return $this->render('index', [
+            'dataProvider' => $dataProvider,
+        ]);
+    }
+
+    /**
+     * Displays a single Comment model.
+     * @param integer $id
+     * @return mixed
+     */
+    public function actionView($id)
+    {
+        return $this->render('view', [
+            'model' => $this->findModel($id),
+        ]);
+    }
+
+    /**
+     * Creates a new Comment model.
+     * If creation is successful, the browser will be redirected to the 'view' page.
+     * @return mixed
+     */
+    public function actionCreate()
+    {
+        $model = new Comment();
+
+        if ($model->load(Yii::$app->request->post()) && $model->save()) {
+            return $this->redirect(['view', 'id' => $model->comment_id]);
+        } else {
+            return $this->render('create', [
+                'model' => $model,
+            ]);
+        }
+    }
+
+    /**
+     * Updates an existing Comment model.
+     * If update is successful, the browser will be redirected to the 'view' page.
+     * @param integer $id
+     * @return mixed
+     */
+    public function actionUpdate($id)
+    {
+        $model = $this->findModel($id);
+
+        if ($model->load(Yii::$app->request->post()) && $model->save()) {
+            return $this->redirect(['view', 'id' => $model->comment_id]);
+        } else {
+            return $this->render('update', [
+                'model' => $model,
+            ]);
+        }
+    }
+
+    /**
+     * Deletes an existing Comment model.
+     * If deletion is successful, the browser will be redirected to the 'index' page.
+     * @param integer $id
+     * @return mixed
+     */
+    public function actionDelete($id)
+    {
+        $this->findModel($id)->delete();
+
+        return $this->redirect(['index']);
+    }
+
+    /**
+     * Finds the Comment model based on its primary key value.
+     * If the model is not found, a 404 HTTP exception will be thrown.
+     * @param integer $id
+     * @return Comment the loaded model
+     * @throws NotFoundHttpException if the model cannot be found
+     */
+    protected function findModel($id)
+    {
+        if (($model = Comment::findOne($id)) !== null) {
+            return $model;
+        } else {
+            throw new NotFoundHttpException('The requested page does not exist.');
+        }
+    }
+}
diff --git a/backend/views/comment/_form.php b/backend/views/comment/_form.php
new file mode 100644
index 0000000..b8b2c16
--- /dev/null
+++ b/backend/views/comment/_form.php
@@ -0,0 +1,31 @@
+<?php
+
+use yii\helpers\Html;
+use yii\widgets\ActiveForm;
+
+/* @var $this yii\web\View */
+/* @var $model common\models\Comment */
+/* @var $form yii\widgets\ActiveForm */
+?>
+
+<div class="comment-form">
+
+    <?php $form = ActiveForm::begin(); ?>
+
+    <?= $form->field($model, 'comment_pid')->textInput() ?>
+
+    <?= $form->field($model, 'content')->textarea(['rows' => 6]) ?>
+
+    <?= $form->field($model, 'created_at')->textInput() ?>
+
+    <?= $form->field($model, 'entity_id')->textInput() ?>
+
+    <?= $form->field($model, 'user_id')->textInput() ?>
+
+    <div class="form-group">
+        <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
+    </div>
+
+    <?php ActiveForm::end(); ?>
+
+</div>
diff --git a/backend/views/comment/create.php b/backend/views/comment/create.php
new file mode 100644
index 0000000..b3ab4a8
--- /dev/null
+++ b/backend/views/comment/create.php
@@ -0,0 +1,21 @@
+<?php
+
+use yii\helpers\Html;
+
+
+/* @var $this yii\web\View */
+/* @var $model common\models\Comment */
+
+$this->title = 'Create Comment';
+$this->params['breadcrumbs'][] = ['label' => 'Comments', 'url' => ['index']];
+$this->params['breadcrumbs'][] = $this->title;
+?>
+<div class="comment-create">
+
+    <h1><?= Html::encode($this->title) ?></h1>
+
+    <?= $this->render('_form', [
+        'model' => $model,
+    ]) ?>
+
+</div>
diff --git a/backend/views/comment/index.php b/backend/views/comment/index.php
new file mode 100644
index 0000000..01f578c
--- /dev/null
+++ b/backend/views/comment/index.php
@@ -0,0 +1,36 @@
+<?php
+
+use yii\helpers\Html;
+use yii\grid\GridView;
+
+/* @var $this yii\web\View */
+/* @var $dataProvider yii\data\ActiveDataProvider */
+
+$this->title = 'Comments';
+$this->params['breadcrumbs'][] = $this->title;
+?>
+<div class="comment-index">
+
+    <h1><?= Html::encode($this->title) ?></h1>
+
+    <p>
+        <?= Html::a('Create Comment', ['create'], ['class' => 'btn btn-success']) ?>
+    </p>
+
+    <?= GridView::widget([
+        'dataProvider' => $dataProvider,
+        'columns' => [
+            ['class' => 'yii\grid\SerialColumn'],
+
+            'comment_id',
+            'comment_pid',
+            'content:ntext',
+            'created_at',
+            'entity_id',
+            // 'user_id',
+
+            ['class' => 'yii\grid\ActionColumn'],
+        ],
+    ]); ?>
+
+</div>
diff --git a/backend/views/comment/update.php b/backend/views/comment/update.php
new file mode 100644
index 0000000..1ea8244
--- /dev/null
+++ b/backend/views/comment/update.php
@@ -0,0 +1,21 @@
+<?php
+
+use yii\helpers\Html;
+
+/* @var $this yii\web\View */
+/* @var $model common\models\Comment */
+
+$this->title = 'Update Comment: ' . ' ' . $model->comment_id;
+$this->params['breadcrumbs'][] = ['label' => 'Comments', 'url' => ['index']];
+$this->params['breadcrumbs'][] = ['label' => $model->comment_id, 'url' => ['view', 'id' => $model->comment_id]];
+$this->params['breadcrumbs'][] = 'Update';
+?>
+<div class="comment-update">
+
+    <h1><?= Html::encode($this->title) ?></h1>
+
+    <?= $this->render('_form', [
+        'model' => $model,
+    ]) ?>
+
+</div>
diff --git a/backend/views/comment/view.php b/backend/views/comment/view.php
new file mode 100644
index 0000000..59aa83a
--- /dev/null
+++ b/backend/views/comment/view.php
@@ -0,0 +1,40 @@
+<?php
+
+use yii\helpers\Html;
+use yii\widgets\DetailView;
+
+/* @var $this yii\web\View */
+/* @var $model common\models\Comment */
+
+$this->title = $model->comment_id;
+$this->params['breadcrumbs'][] = ['label' => 'Comments', 'url' => ['index']];
+$this->params['breadcrumbs'][] = $this->title;
+?>
+<div class="comment-view">
+
+    <h1><?= Html::encode($this->title) ?></h1>
+
+    <p>
+        <?= Html::a('Update', ['update', 'id' => $model->comment_id], ['class' => 'btn btn-primary']) ?>
+        <?= Html::a('Delete', ['delete', 'id' => $model->comment_id], [
+            'class' => 'btn btn-danger',
+            'data' => [
+                'confirm' => 'Are you sure you want to delete this item?',
+                'method' => 'post',
+            ],
+        ]) ?>
+    </p>
+
+    <?= DetailView::widget([
+        'model' => $model,
+        'attributes' => [
+            'comment_id',
+            'comment_pid',
+            'content:ntext',
+            'created_at',
+            'entity_id',
+            'user_id',
+        ],
+    ]) ?>
+
+</div>
diff --git a/common/models/Comment.php b/common/models/Comment.php
new file mode 100644
index 0000000..f6664c9
--- /dev/null
+++ b/common/models/Comment.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace common\models;
+
+use Yii;
+
+/**
+ * This is the model class for table "comment".
+ *
+ * @property integer $comment_id
+ * @property integer $comment_pid
+ * @property string $content
+ * @property string $created_at
+ * @property integer $entity_id
+ * @property integer $user_id
+ */
+class Comment extends \yii\db\ActiveRecord
+{
+    /**
+     * @inheritdoc
+     */
+    public static function tableName()
+    {
+        return 'comment';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function rules()
+    {
+        return [
+            [['comment_pid', 'entity_id', 'user_id'], 'integer'],
+            [['content'], 'string'],
+            [['created_at'], 'safe']
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function attributeLabels()
+    {
+        return [
+            'comment_id' => 'Comment ID',
+            'comment_pid' => 'Comment Pid',
+            'content' => 'Content',
+            'created_at' => 'Created At',
+            'entity_id' => 'Entity ID',
+            'user_id' => 'User ID',
+        ];
+    }
+
+    public function getUser()
+    {
+        return $this->hasOne(User::className(), ['id' => 'user_id']);
+    }
+}
diff --git a/common/widgets/CommentWidget.php b/common/widgets/CommentWidget.php
new file mode 100644
index 0000000..317dcff
--- /dev/null
+++ b/common/widgets/CommentWidget.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace common\widgets;
+
+use yii\base\Widget;
+use yii\helpers\Html;
+
+class CommentWidget extends Widget
+{
+
+    public $comments;
+    public $reload;
+
+    private function html ($d, $lvl)
+    {
+        echo '
+        <li class="comment" level="' . $lvl . '">
+        <div class="comment_body" comment_id="'. $d['id'] .'">
+            <div class="comment_info">
+                <span class="comment_username">' . $d['username'] . '</span>&nbsp;
+                <span class="comment_created_time">' . date('F j Y h:i', strtotime($d['created_at'])) . '</span>
+                <div class="dropdown">
+                    <button class="btn btn-default btn-xs dropdown-toggle" type="button" id="" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
+                        Manage
+                        <span class="caret"></span>
+                    </button>
+                    <ul class="dropdown-menu" aria-labelledby="dropdownMenu1">
+                        <li><a href="#">Edit</a></li>
+                        <li><a href="#">Hide</a></li>
+                        <li><a href="#">Delete</a></li>
+                    </ul>
+                </div>
+            </div>
+            <div class="message">
+                <p>' . $d['content'] . '</p>
+            </div>
+            <button type="button" class="btn btn-default btn-xs btn-reply">Reply</button>
+        </div>
+        </li>';
+    }
+
+    private function display(array $comments, $level = 0)
+    {
+        foreach ($comments as $info)
+        {
+            echo '<ul>';
+
+            $this->html($info, $level + 1);
+
+            if (!empty($info['childs']))
+            {
+                $this->display($info['childs'], $level + 1);
+            }
+
+            echo '</ul>';
+        }
+
+        if (isset($this->reload) && $this->reload == false)
+        {
+
+        }
+
+    }
+
+    private function field()
+    {
+        echo '<div class="container new_comment">
+                <div class="form-group">
+                    <label for="comment">Comment:</label>
+                    <textarea class="form-control" rows="5" id="comment"></textarea>
+                    <button type="button" class="btn btn-info btn-md btn-send">Send</button>
+                </div>
+              </div>';
+    }
+
+    public function init()
+    {
+
+    }
+    public function run()
+    {
+        echo '<div class="container" id="comment_wrapper">';
+        $this->display($this->comments);
+        echo '</div>';
+        $this->field();
+    }
+}
diff --git a/frontend/controllers/CommentController.php b/frontend/controllers/CommentController.php
new file mode 100644
index 0000000..fd3a190
--- /dev/null
+++ b/frontend/controllers/CommentController.php
@@ -0,0 +1,69 @@
+<?php
+
+namespace frontend\controllers;
+
+use Yii;
+use common\models\Comment;
+
+class CommentController extends \yii\web\Controller
+{
+    public function actionIndex()
+    {
+        $post = Comment::find()->with('user')->orderBy('created_at ASC')->all();
+
+        $comments = array();
+
+        foreach($post as $p)
+        {
+            $comments[$p['comment_id']] = array(
+                'id' => $p['comment_id'],
+                'parent' => $p['comment_pid'],
+                'content' => $p['content'],
+                'username' => $p->user->username,
+                'created_at' => $p['created_at'],
+                'childs' => array()
+            );
+        }
+
+        foreach ($comments as $key => &$val)
+        {
+            if ($val['parent'] != 0)
+            {
+                $comments[$val['parent']]['childs'][] =& $val;
+            }
+        }
+        unset($val);
+
+        foreach ($comments as $key => $val)
+        {
+            if ($val['parent'] != 0)
+            {
+                unset($comments[$key]);
+            }
+        }
+
+        if (Yii::$app->request->get('action') == 'reload')
+        {
+            return $this->renderAjax('index', array('data' => $comments));
+        }
+        else
+        {
+            return $this->render('index', array('data' => $comments, 'reload' => false));
+        }
+    }
+
+    public function actionCreate()
+    {
+        $comment = new Comment;
+
+        $comment->user_id = Yii::$app->user->identity->id;
+        $comment->content = Yii::$app->request->post('content');
+        $comment->entity_id = 3;//Yii::$app->request->post('entity_id');
+        $comment->comment_pid = Yii::$app->request->post('parent_id');
+        $comment->created_at = date('Y-m-d H:i:s', time());
+
+        $comment->save();
+
+    }
+
+}
diff --git a/frontend/views/comment/index.php b/frontend/views/comment/index.php
new file mode 100644
index 0000000..2c6e7d4
--- /dev/null
+++ b/frontend/views/comment/index.php
@@ -0,0 +1,10 @@
+<?php
+/* @var $this yii\web\View */
+
+$this->registerJsFile(Yii::$app->request->baseUrl . '/js/comments.js', ['yii\web\JqueryAsset']);
+
+?>
+
+
+<?php use common\widgets\CommentWidget; ?>
+<?= CommentWidget::widget(['comments' => $data, 'reload' => $reload]) ?>
diff --git a/frontend/web/js/comments.js b/frontend/web/js/comments.js
new file mode 100644
index 0000000..0878021
--- /dev/null
+++ b/frontend/web/js/comments.js
@@ -0,0 +1,92 @@
+$(document).ready(function(){
+
+    applyScript();
+
+    /*var pubnub = PUBNUB({
+        subscribe_key: 'demo',
+        publish_key: 'demo'
+    });
+
+    pubnub.subscribe({
+        channel: 'comment',
+        message: function(m){console.log(m)},
+        error: function (error) {
+          // Handle error here
+          console.log(JSON.stringify(error));
+        }
+    }); */
+});
+
+function applyScript()
+{
+
+    var parent_id = 0;
+
+    var textarea = $(".new_comment").find("textarea");
+    var replyName;
+
+    $(".comment_reply").each(function()
+    {
+        $(this).hide();
+    });
+
+    $(".btn-reply").each(function()
+    {
+        $(this).on("click", function()
+        {
+            replyName = $(this).siblings().find(".comment_username").text();
+            parent_id = $(this).parents(".comment_body").attr("comment_id");
+
+            textarea.val(replyName + ', ');
+
+        });
+
+    });
+
+    $(".btn-send").on('click', function()
+    {
+        var content = textarea.val();
+
+        if (content.indexOf(replyName) > -1 == false)
+        {
+            parent_id = 0;
+        }
+        createComment(content, parent_id);
+    });
+
+    function reload_comments()
+    {
+        var path = window.location.protocol + "//" + window.location.host + "/";
+        $.ajax({
+            type: 'GET',
+            url : path + 'comment',
+            data : {
+                'action' : 'reload'
+            },
+            success: function(res)
+            {
+                $("#comment_wrapper").html(res);
+                console.log('reloaded');
+
+                applyScript();
+            }
+        });
+    }
+    function createComment(content, parent_id)
+    {
+        $.ajax({
+            type: 'POST',
+            url : '/comment/create',
+            data: {
+                'content' : content,
+                'parent_id' : parent_id
+            },
+            success: function(res)
+            {
+                //reload_comments();
+                alert('Comment sent');
+            }
+        });
+    }
+
+}
--
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