diff --git a/app/Http/Admin/Services/Service.php b/app/Http/Admin/Services/Service.php
index e6093909..8dd70bd3 100644
--- a/app/Http/Admin/Services/Service.php
+++ b/app/Http/Admin/Services/Service.php
@@ -2,9 +2,7 @@
 
 namespace App\Http\Admin\Services;
 
-use Phalcon\Mvc\User\Component;
-
-class Service extends Component
+class Service extends \App\Services\Service
 {
 
 }
diff --git a/app/Http/Admin/Views/order/macro.volt b/app/Http/Admin/Views/order/macro.volt
index 3d9fe1af..836d0d77 100644
--- a/app/Http/Admin/Views/order/macro.volt
+++ b/app/Http/Admin/Views/order/macro.volt
@@ -25,8 +25,8 @@
         {% set course = order.item_info['course'] %}
         {% set reward = order.item_info['reward'] %}
         <div class="kg-order-item">
-            <p>课程名称：{{ course['title'] }}</p>
-            <p>打赏金额：￥{{ reward['price'] }}</p>
+            <p>商品名称：{{ order.subject }}</p>
+            <p>商品价格：￥{{ order.amount }}</p>
         </div>
     {% elseif order.item_type == 'test' %}
         <div class="kg-order-item">
diff --git a/app/Http/Api/Services/Service.php b/app/Http/Api/Services/Service.php
index f2575fb4..b97b2327 100644
--- a/app/Http/Api/Services/Service.php
+++ b/app/Http/Api/Services/Service.php
@@ -2,12 +2,7 @@
 
 namespace App\Http\Api\Services;
 
-use App\Traits\Auth as AuthTrait;
-use Phalcon\Mvc\User\Component;
-
-class Service extends Component
+class Service extends \App\Services\Service
 {
 
-    use AuthTrait;
-
 }
diff --git a/app/Http/Html5/Services/Service.php b/app/Http/Html5/Services/Service.php
index 850f50ae..b156c13f 100644
--- a/app/Http/Html5/Services/Service.php
+++ b/app/Http/Html5/Services/Service.php
@@ -2,11 +2,7 @@
 
 namespace App\Http\Html5\Services;
 
-use App\Traits\Auth as AuthTrait;
-use Phalcon\Mvc\User\Component;
-
-class Service extends Component
+class Service extends \App\Services\Service
 {
 
-    use AuthTrait;
 }
diff --git a/app/Http/Web/Services/Service.php b/app/Http/Web/Services/Service.php
index 7f2424ec..30362c00 100644
--- a/app/Http/Web/Services/Service.php
+++ b/app/Http/Web/Services/Service.php
@@ -2,11 +2,7 @@
 
 namespace App\Http\Web\Services;
 
-use App\Traits\Auth as AuthTrait;
-use Phalcon\Mvc\User\Component;
-
-class Service extends Component
+class Service extends \App\Services\Service
 {
 
-    use AuthTrait;
 }
diff --git a/app/Models/AccountBind.php b/app/Models/AccountBind.php
new file mode 100644
index 00000000..fd2fac5e
--- /dev/null
+++ b/app/Models/AccountBind.php
@@ -0,0 +1,93 @@
+<?php
+
+namespace App\Models;
+
+use Phalcon\Mvc\Model\Behavior\SoftDelete;
+
+class AccountBind extends Model
+{
+
+    /**
+     * 服务商类型
+     */
+    const PROVIDER_QQ = 'qq';
+    const PROVIDER_WEIXIN = 'weixin';
+    const PROVIDER_WEIBO = 'weibo';
+
+    /**
+     * 主键编号
+     *
+     * @var int
+     */
+    public $id;
+
+    /**
+     * 服务商
+     *
+     * @var string
+     */
+    public $provider;
+
+    /**
+     * 外部用户编号
+     *
+     * @var string
+     */
+    public $open_id;
+
+    /**
+     * 内部用户编号
+     *
+     * @var int
+     */
+    public $user_id;
+
+    /**
+     * 删除标识
+     *
+     * @var int
+     */
+    public $deleted;
+
+    /**
+     * 创建时间
+     *
+     * @var int
+     */
+    public $create_time;
+
+    /**
+     * 更新时间
+     *
+     * @var int
+     */
+    public $update_time;
+
+    public function getSource()
+    {
+        return 'kg_account_bind';
+    }
+
+    public function initialize()
+    {
+        parent::initialize();
+
+        $this->addBehavior(
+            new SoftDelete([
+                'field' => 'deleted',
+                'value' => 1,
+            ])
+        );
+    }
+
+    public function beforeCreate()
+    {
+        $this->create_time = time();
+    }
+
+    public function beforeUpdate()
+    {
+        $this->update_time = time();
+    }
+
+}
diff --git a/app/Repos/Account.php b/app/Repos/Account.php
index 680ab79c..fb1cf58d 100644
--- a/app/Repos/Account.php
+++ b/app/Repos/Account.php
@@ -3,6 +3,7 @@
 namespace App\Repos;
 
 use App\Models\Account as AccountModel;
+use App\Models\AccountBind as AccountBindModel;
 use Phalcon\Mvc\Model;
 use Phalcon\Mvc\Model\Resultset;
 use Phalcon\Mvc\Model\ResultsetInterface;
@@ -43,6 +44,23 @@ class Account extends Repository
         ]);
     }
 
+    /**
+     * @param string $provider
+     * @param string $openId
+     * @return AccountModel|Model|bool
+     */
+    public function findByOpenId($provider, $openId)
+    {
+        $bind = AccountBindModel::findFirst([
+            'conditions' => 'provider = ?1 AND open_id = ?2',
+            'bind' => [1 => $provider, 2 => $openId],
+        ]);
+
+        if (!$bind) return false;
+
+        return AccountModel::findFirst($bind->user_id);
+    }
+
     /**
      * @param array $ids
      * @param array|string $columns
diff --git a/app/Services/Frontend/Account/EmailUpdate.php b/app/Services/Frontend/Account/EmailUpdate.php
index 1adedb11..c856716f 100644
--- a/app/Services/Frontend/Account/EmailUpdate.php
+++ b/app/Services/Frontend/Account/EmailUpdate.php
@@ -1,8 +1,9 @@
 <?php
 
-namespace App\Services\Frontend;
+namespace App\Services\Frontend\Account;
 
 use App\Repos\Account as AccountRepo;
+use App\Services\Frontend\Service;
 use App\Validators\Account as AccountValidator;
 use App\Validators\Security as SecurityValidator;
 
diff --git a/app/Services/Frontend/Chapter/ChapterInfo.php b/app/Services/Frontend/Chapter/ChapterInfo.php
index fa23c757..267428af 100644
--- a/app/Services/Frontend/Chapter/ChapterInfo.php
+++ b/app/Services/Frontend/Chapter/ChapterInfo.php
@@ -45,41 +45,31 @@ class ChapterInfo extends Service
         $this->user = $user;
 
         $this->setCourseUser($course, $user);
-
         $this->setChapterUser($chapter, $user);
 
         $this->handleCourseUser($course, $user);
-
         $this->handleChapterUser($chapter, $user);
 
         return $this->handleChapter($chapter, $user);
     }
 
-    /**
-     * @param ChapterModel $chapter
-     * @param UserModel $user
-     * @return array
-     */
     protected function handleChapter(ChapterModel $chapter, UserModel $user)
     {
         $result = $this->formatChapter($chapter);
 
         $me = [
-            'agreed' => false,
-            'opposed' => false,
+            'agreed' => 0,
+            'opposed' => 0,
         ];
 
         $me['owned'] = $this->ownedChapter;
 
         if ($user->id > 0) {
-
             $chapterVoteRepo = new ChapterVoteRepo();
-
             $chapterVote = $chapterVoteRepo->findChapterVote($chapter->id, $user->id);
-
             if ($chapterVote) {
-                $me['agreed'] = $chapterVote->type == ChapterVoteModel::TYPE_AGREE;
-                $me['opposed'] = $chapterVote->type == ChapterVoteModel::TYPE_OPPOSE;
+                $me['agreed'] = $chapterVote->type == ChapterVoteModel::TYPE_AGREE ? 1 : 0;
+                $me['opposed'] = $chapterVote->type == ChapterVoteModel::TYPE_OPPOSE ? 1 : 0;
             }
         }
 
@@ -88,10 +78,6 @@ class ChapterInfo extends Service
         return $result;
     }
 
-    /**
-     * @param ChapterModel $chapter
-     * @return array
-     */
     protected function formatChapter(ChapterModel $chapter)
     {
         $item = [];
@@ -111,10 +97,6 @@ class ChapterInfo extends Service
         return $item;
     }
 
-    /**
-     * @param ChapterModel $chapter
-     * @return array
-     */
     protected function formatChapterVod(ChapterModel $chapter)
     {
         $chapterVodService = new ChapterVodService();
@@ -123,7 +105,7 @@ class ChapterInfo extends Service
 
         $course = $this->formatCourse($this->course);
 
-        $item = [
+        return [
             'id' => $chapter->id,
             'title' => $chapter->title,
             'summary' => $chapter->summary,
@@ -134,14 +116,8 @@ class ChapterInfo extends Service
             'comment_count' => $chapter->comment_count,
             'user_count' => $chapter->user_count,
         ];
-
-        return $item;
     }
 
-    /**
-     * @param ChapterModel $chapter
-     * @return array
-     */
     protected function formatChapterLive(ChapterModel $chapter)
     {
         $headers = getallheaders();
@@ -162,7 +138,7 @@ class ChapterInfo extends Service
 
         $live = $chapterRepo->findChapterLive($chapter->id);
 
-        $item = [
+        return [
             'id' => $chapter->id,
             'title' => $chapter->title,
             'summary' => $chapter->summary,
@@ -175,14 +151,8 @@ class ChapterInfo extends Service
             'comment_count' => $chapter->comment_count,
             'user_count' => $chapter->user_count,
         ];
-
-        return $item;
     }
 
-    /**
-     * @param ChapterModel $chapter
-     * @return array
-     */
     protected function formatChapterRead(ChapterModel $chapter)
     {
         $chapterRepo = new ChapterRepo();
@@ -191,7 +161,7 @@ class ChapterInfo extends Service
 
         $course = $this->formatCourse($this->course);
 
-        $item = [
+        return [
             'id' => $chapter->id,
             'title' => $chapter->title,
             'summary' => $chapter->summary,
@@ -202,28 +172,16 @@ class ChapterInfo extends Service
             'comment_count' => $chapter->comment_count,
             'user_count' => $chapter->user_count,
         ];
-
-        return $item;
     }
 
-    /**
-     * @param CourseModel $course
-     * @return array
-     */
     protected function formatCourse(CourseModel $course)
     {
-        $result = [
+        return [
             'id' => $course->id,
             'title' => $course->title,
         ];
-
-        return $result;
     }
 
-    /**
-     * @param CourseModel $course
-     * @param UserModel $user
-     */
     protected function handleCourseUser(CourseModel $course, UserModel $user)
     {
         if ($user->id == 0) return;
@@ -247,10 +205,6 @@ class ChapterInfo extends Service
         $course->update();
     }
 
-    /**
-     * @param ChapterModel $chapter
-     * @param UserModel $user
-     */
     protected function handleChapterUser(ChapterModel $chapter, UserModel $user)
     {
         if ($user->id == 0) return;
@@ -272,5 +226,4 @@ class ChapterInfo extends Service
         $chapter->update();
     }
 
-
 }
diff --git a/app/Services/Frontend/ChapterTrait.php b/app/Services/Frontend/ChapterTrait.php
index 126e4a62..3a80464b 100644
--- a/app/Services/Frontend/ChapterTrait.php
+++ b/app/Services/Frontend/ChapterTrait.php
@@ -24,9 +24,7 @@ trait ChapterTrait
     {
         $validator = new ChapterValidator();
 
-        $chapter = $validator->checkChapter($id);
-
-        return $chapter;
+        return $validator->checkChapter($id);
     }
 
     /**
diff --git a/app/Services/Frontend/Comment/CommentCreate.php b/app/Services/Frontend/Comment/CommentCreate.php
index a98f4fcc..e5edaf3c 100644
--- a/app/Services/Frontend/Comment/CommentCreate.php
+++ b/app/Services/Frontend/Comment/CommentCreate.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Services\Frontend\Chapter;
+namespace App\Services\Frontend\Comment;
 
 use App\Models\Comment as CommentModel;
 use App\Models\User as UserModel;
@@ -15,16 +15,10 @@ class CommentCreate extends Service
 
     use ChapterTrait;
 
-    public function createComment($id)
+    public function createComment()
     {
         $post = $this->request->getPost();
 
-        $chapter = $this->checkChapter($id);
-
-        $courseRepo = new CourseRepo();
-
-        $course = $courseRepo->findById($chapter->course_id);
-
         $user = $this->getLoginUser();
 
         $validator = new UserDailyLimitValidator();
@@ -33,12 +27,19 @@ class CommentCreate extends Service
 
         $validator = new CommentValidator();
 
+        $chapter = $validator->checkChapter($post['chapter_id']);
+
+        $courseRepo = new CourseRepo();
+
+        $course = $courseRepo->findById($chapter->course_id);
+
         $data = [];
 
         $data['content'] = $validator->checkContent($post['content']);
 
         if (isset($post['parent_id'])) {
-            $data['parent_id'] = $validator->checkParentId($post['parent_id']);
+            $parent = $validator->checkParent($post['parent_id']);
+            $data['parent_id'] = $parent->id;
         }
 
         if (isset($post['mentions'])) {
diff --git a/app/Services/Frontend/CommentTrait.php b/app/Services/Frontend/CommentTrait.php
index 0878a84c..0a98fbc3 100644
--- a/app/Services/Frontend/CommentTrait.php
+++ b/app/Services/Frontend/CommentTrait.php
@@ -11,9 +11,7 @@ trait CommentTrait
     {
         $validator = new CommentValidator();
 
-        $comment = $validator->checkComment($id);
-
-        return $comment;
+        return $validator->checkComment($id);
     }
 
 }
diff --git a/app/Services/Frontend/Consult/ConsultCreate.php b/app/Services/Frontend/Consult/ConsultCreate.php
index fb5f1ad1..62ec39ad 100644
--- a/app/Services/Frontend/Consult/ConsultCreate.php
+++ b/app/Services/Frontend/Consult/ConsultCreate.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Services\Frontend\Course;
+namespace App\Services\Frontend\Consult;
 
 use App\Models\Consult as ConsultModel;
 use App\Models\User as UserModel;
@@ -14,12 +14,10 @@ class ConsultCreate extends Service
 
     use CourseTrait;
 
-    public function createConsult($id)
+    public function createConsult()
     {
         $post = $this->request->getPost();
 
-        $course = $this->checkCourse($id);
-
         $user = $this->getLoginUser();
 
         $validator = new UserDailyLimitValidator();
@@ -28,6 +26,7 @@ class ConsultCreate extends Service
 
         $validator = new ConsultValidator();
 
+        $course = $validator->checkCourse($post['course_id']);
         $question = $validator->checkQuestion($post['question']);
 
         $consult = new ConsultModel();
diff --git a/app/Services/Frontend/ConsultTrait.php b/app/Services/Frontend/ConsultTrait.php
index 0a746f46..6eb691da 100644
--- a/app/Services/Frontend/ConsultTrait.php
+++ b/app/Services/Frontend/ConsultTrait.php
@@ -11,9 +11,7 @@ trait ConsultTrait
     {
         $validator = new ConsultValidator();
 
-        $consult = $validator->checkConsult($id);
-
-        return $consult;
+        return $validator->checkConsult($id);
     }
 
 }
diff --git a/app/Services/Frontend/Course/CourseInfo.php b/app/Services/Frontend/Course/CourseInfo.php
index 12d31914..3b34d3c0 100644
--- a/app/Services/Frontend/Course/CourseInfo.php
+++ b/app/Services/Frontend/Course/CourseInfo.php
@@ -24,20 +24,15 @@ class CourseInfo extends Service
         return $this->handleCourse($course, $user);
     }
 
-    /**
-     * @param CourseModel $course
-     * @param UserModel $user
-     * @return array
-     */
-    protected function handleCourse($course, $user)
+    protected function handleCourse(CourseModel $course, UserModel $user)
     {
         $result = $this->formatCourse($course);
 
         $me = [
-            'joined' => false,
-            'owned' => false,
-            'reviewed' => false,
-            'favorited' => false,
+            'joined' => 0,
+            'owned' => 0,
+            'reviewed' => 0,
+            'favorited' => 0,
             'progress' => 0,
         ];
 
@@ -48,16 +43,16 @@ class CourseInfo extends Service
             $favorite = $favoriteRepo->findCourseFavorite($course->id, $user->id);
 
             if ($favorite && $favorite->deleted == 0) {
-                $me['favorited'] = true;
+                $me['favorited'] = 1;
             }
 
             if ($this->courseUser) {
-                $me['reviewed'] = $this->courseUser->reviewed;
-                $me['progress'] = $this->courseUser->progress;
+                $me['reviewed'] = $this->courseUser->reviewed ? 1 : 0;
+                $me['progress'] = $this->courseUser->progress ? 1 : 0;
             }
 
-            $me['joined'] = $this->joinedCourse;
-            $me['owned'] = $this->ownedCourse;
+            $me['joined'] = $this->joinedCourse ? 1 : 0;
+            $me['owned'] = $this->ownedCourse ? 1 : 0;
         }
 
         $result['me'] = $me;
@@ -65,13 +60,9 @@ class CourseInfo extends Service
         return $result;
     }
 
-    /**
-     * @param CourseModel $course
-     * @return array
-     */
     protected function formatCourse($course)
     {
-        $result = [
+        return [
             'id' => $course->id,
             'title' => $course->title,
             'cover' => kg_ci_img_url($course->cover),
@@ -82,7 +73,8 @@ class CourseInfo extends Service
             'vip_price' => (float)$course->vip_price,
             'study_expiry' => $course->study_expiry,
             'refund_expiry' => $course->refund_expiry,
-            'score' => $course->score,
+            'rating' => (float)$course->rating,
+            'score' => (float)$course->score,
             'model' => $course->model,
             'level' => $course->level,
             'attrs' => $course->attrs,
@@ -91,8 +83,6 @@ class CourseInfo extends Service
             'review_count' => $course->review_count,
             'favorite_count' => $course->favorite_count,
         ];
-
-        return $result;
     }
 
 }
diff --git a/app/Services/Frontend/CourseTrait.php b/app/Services/Frontend/CourseTrait.php
index 128a1964..1e71d9a6 100644
--- a/app/Services/Frontend/CourseTrait.php
+++ b/app/Services/Frontend/CourseTrait.php
@@ -30,9 +30,7 @@ trait CourseTrait
     {
         $validator = new CourseValidator();
 
-        $course = $validator->checkCourse($id);
-
-        return $course;
+        return $validator->checkCourse($id);
     }
 
     /**
diff --git a/app/Services/Frontend/OrderTrait.php b/app/Services/Frontend/OrderTrait.php
index 0230baaa..3280962d 100644
--- a/app/Services/Frontend/OrderTrait.php
+++ b/app/Services/Frontend/OrderTrait.php
@@ -11,9 +11,7 @@ trait OrderTrait
     {
         $validator = new OrderValidator();
 
-        $order = $validator->checkOrderBySn($sn);
-
-        return $order;
+        return $validator->checkOrderBySn($sn);
     }
 
 }
diff --git a/app/Services/Frontend/Review/ReviewCreate.php b/app/Services/Frontend/Review/ReviewCreate.php
index c1e23b4d..518552c8 100644
--- a/app/Services/Frontend/Review/ReviewCreate.php
+++ b/app/Services/Frontend/Review/ReviewCreate.php
@@ -1,10 +1,9 @@
 <?php
 
-namespace App\Services\Frontend\Course;
+namespace App\Services\Frontend\Review;
 
 use App\Models\Review as ReviewModel;
 use App\Models\User as UserModel;
-use App\Services\Frontend\CourseTrait;
 use App\Services\Frontend\Service;
 use App\Validators\Review as ReviewValidator;
 use App\Validators\UserDailyLimit as UserDailyLimitValidator;
@@ -12,14 +11,10 @@ use App\Validators\UserDailyLimit as UserDailyLimitValidator;
 class ReviewCreate extends Service
 {
 
-    use CourseTrait;
-
-    public function createReview($id)
+    public function createReview()
     {
         $post = $this->request->getPost();
 
-        $course = $this->checkCourse($id);
-
         $user = $this->getLoginUser();
 
         $validator = new UserDailyLimitValidator();
@@ -28,11 +23,12 @@ class ReviewCreate extends Service
 
         $validator = new ReviewValidator();
 
-        $validator->checkIfReviewed($course->id, $user->id);
-
+        $course = $validator->checkCourse($post['course_id']);
         $content = $validator->checkContent($post['content']);
         $rating = $validator->checkRating($post['rating']);
 
+        $validator->checkIfReviewed($course->id, $user->id);
+
         $review = new ReviewModel();
 
         $review->course_id = $course->id;
diff --git a/app/Services/Frontend/Review/ReviewVote.php b/app/Services/Frontend/Review/ReviewVote.php
index b15a834d..8fa47246 100644
--- a/app/Services/Frontend/Review/ReviewVote.php
+++ b/app/Services/Frontend/Review/ReviewVote.php
@@ -1,10 +1,12 @@
 <?php
 
-namespace App\Services\Frontend;
+namespace App\Services\Frontend\Review;
 
 use App\Models\ReviewVote as ReviewVoteModel;
 use App\Models\User as UserModel;
 use App\Repos\ReviewVote as ReviewVoteRepo;
+use App\Services\Frontend\ReviewTrait;
+use App\Services\Frontend\Service;
 use App\Validators\UserDailyLimit as UserDailyLimitValidator;
 
 class ReviewVote extends Service
diff --git a/app/Services/Frontend/ReviewTrait.php b/app/Services/Frontend/ReviewTrait.php
index 64f5b474..09502bf8 100644
--- a/app/Services/Frontend/ReviewTrait.php
+++ b/app/Services/Frontend/ReviewTrait.php
@@ -11,9 +11,7 @@ trait ReviewTrait
     {
         $validator = new ReviewValidator();
 
-        $review = $validator->checkReview($id);
-
-        return $review;
+        return $validator->checkReview($id);
     }
 
 }
diff --git a/app/Services/Frontend/Service.php b/app/Services/Frontend/Service.php
index afe1a4d7..bf3f58de 100644
--- a/app/Services/Frontend/Service.php
+++ b/app/Services/Frontend/Service.php
@@ -2,11 +2,7 @@
 
 namespace App\Services\Frontend;
 
-use App\Traits\Auth as AuthTrait;
-use Phalcon\Mvc\User\Component;
-
-class Service extends Component
+class Service extends \App\Services\Service
 {
 
-    use AuthTrait;
 }
\ No newline at end of file
diff --git a/app/Services/Frontend/Teacher/TeacherInfo.php b/app/Services/Frontend/Teacher/TeacherInfo.php
index dc4098b3..ebfdd6f3 100644
--- a/app/Services/Frontend/Teacher/TeacherInfo.php
+++ b/app/Services/Frontend/Teacher/TeacherInfo.php
@@ -28,7 +28,7 @@ class TeacherInfo extends Service
         $user->vip = $user->vip == 1;
         $user->locked = $user->locked == 1;
 
-        $result = [
+        return [
             'id' => $user->id,
             'name' => $user->name,
             'avatar' => $user->avatar,
@@ -45,8 +45,6 @@ class TeacherInfo extends Service
             'notice_count' => $user->notice_count,
             'msg_count' => $user->msg_count,
         ];
-
-        return $result;
     }
 
 }
diff --git a/app/Services/Frontend/User/UserInfo.php b/app/Services/Frontend/User/UserInfo.php
index 882da54d..8c6d9cea 100644
--- a/app/Services/Frontend/User/UserInfo.php
+++ b/app/Services/Frontend/User/UserInfo.php
@@ -28,7 +28,7 @@ class UserInfo extends Service
         $user->vip = $user->vip == 1;
         $user->locked = $user->locked == 1;
 
-        $result = [
+        return [
             'id' => $user->id,
             'name' => $user->name,
             'avatar' => $user->avatar,
@@ -45,8 +45,6 @@ class UserInfo extends Service
             'notice_count' => $user->notice_count,
             'msg_count' => $user->msg_count,
         ];
-
-        return $result;
     }
 
 }
diff --git a/app/Services/Frontend/UserTrait.php b/app/Services/Frontend/UserTrait.php
index 01f0b71e..b75c79b1 100644
--- a/app/Services/Frontend/UserTrait.php
+++ b/app/Services/Frontend/UserTrait.php
@@ -11,9 +11,7 @@ trait UserTrait
     {
         $validator = new UserValidator();
 
-        $user = $validator->checkUser($id);
-
-        return $user;
+        return $validator->checkUser($id);
     }
 
 }
diff --git a/app/Traits/Auth.php b/app/Traits/Auth.php
index 4dc80334..a8ff51c4 100644
--- a/app/Traits/Auth.php
+++ b/app/Traits/Auth.php
@@ -2,7 +2,6 @@
 
 namespace App\Traits;
 
-use App\Exceptions\Unauthorized as UnauthorizedException;
 use App\Models\User as UserModel;
 use App\Repos\User as UserRepo;
 use App\Services\Auth as AuthService;
@@ -31,7 +30,6 @@ trait Auth
 
     /**
      * @return UserModel
-     * @throws UnauthorizedException
      */
     public function getLoginUser()
     {
diff --git a/app/Validators/Comment.php b/app/Validators/Comment.php
index 4946fbb7..5555d72e 100644
--- a/app/Validators/Comment.php
+++ b/app/Validators/Comment.php
@@ -23,20 +23,7 @@ class Comment extends Validator
         return $comment;
     }
 
-    public function checkCourseId($courseId)
-    {
-        $courseRepo = new CourseRepo();
-
-        $course = $courseRepo->findById($courseId);
-
-        if (!$course) {
-            throw new BadRequestException('comment.invalid_course_id');
-        }
-
-        return $course->id;
-    }
-
-    public function checkChapterId($chapterId)
+    public function checkChapter($chapterId)
     {
         $chapterRepo = new ChapterRepo();
 
@@ -46,20 +33,20 @@ class Comment extends Validator
             throw new BadRequestException('comment.invalid_chapter_id');
         }
 
-        return $chapter->id;
+        return $chapter;
     }
 
-    public function checkParentId($parentId)
+    public function checkParent($parentId)
     {
         $commentRepo = new CourseRepo();
 
-        $comment = $commentRepo->findById($parentId);
+        $parent = $commentRepo->findById($parentId);
 
-        if (!$comment) {
+        if (!$parent) {
             throw new BadRequestException('comment.invalid_parent_id');
         }
 
-        return $comment->id;
+        return $parent;
     }
 
     public function checkContent($content)
diff --git a/app/Validators/Consult.php b/app/Validators/Consult.php
index 48261844..19bd4f56 100644
--- a/app/Validators/Consult.php
+++ b/app/Validators/Consult.php
@@ -22,7 +22,7 @@ class Consult extends Validator
         return $consult;
     }
 
-    public function checkCourseId($courseId)
+    public function checkCourse($courseId)
     {
         $courseRepo = new CourseRepo();
 
@@ -32,7 +32,7 @@ class Consult extends Validator
             throw new BadRequestException('consult.invalid_course_id');
         }
 
-        return $course->id;
+        return $course;
     }
 
     public function checkQuestion($question)
diff --git a/app/Validators/Review.php b/app/Validators/Review.php
index 3e203619..18e8c2e2 100644
--- a/app/Validators/Review.php
+++ b/app/Validators/Review.php
@@ -23,7 +23,7 @@ class Review extends Validator
         return $review;
     }
 
-    public function checkCourseId($courseId)
+    public function checkCourse($courseId)
     {
         $courseRepo = new CourseRepo();
 
@@ -33,7 +33,7 @@ class Review extends Validator
             throw new BadRequestException('review.course_not_found');
         }
 
-        return $courseId;
+        return $course;
     }
 
     public function checkContent($content)