diff --git a/api/v1/serializers/contest.py b/api/v1/serializers/contest.py
index dc5b88fd..9d2e63c4 100644
--- a/api/v1/serializers/contest.py
+++ b/api/v1/serializers/contest.py
@@ -1,3 +1,4 @@
+from django.contrib.auth import get_user_model
 from rest_framework import serializers
 
 from api.v1.serializers.content import ContentSerializer, ContentCreateSerializer, ImageObjectSerializer
@@ -5,6 +6,8 @@ from api.v1.serializers.mixins import DispatchContentMixin
 
 from apps.content.models import (Contest, ContestWork)
 
+User = get_user_model()
+
 
 class ContestSerializer(serializers.ModelSerializer):
     cover = ImageObjectSerializer()
@@ -12,7 +15,8 @@ class ContestSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Contest
-        fields = '__all__'
+        fields = ['title', 'description', 'slug', 'cover',
+                  'date_start', 'date_end', 'active', 'content', 'finished']
 
 
 class ContestCreateSerializer(DispatchContentMixin, serializers.ModelSerializer):
@@ -52,11 +56,14 @@ class ContestWorkSerializer(serializers.ModelSerializer):
                   'created_at', 'likes', 'user_liked', 'img_width', 'img_height']
 
     def get_likes(self, instance):
-        return instance.likes.count()
+        return instance.likes.filter(user__is_active=True).count()
 
     def get_user_liked(self, instance):
-        user = self.context['request'].user
-        return instance.likes.filter(user=user).exists() if user.is_authenticated else False
+        # FIXME
+        user = self.context['request'].query_params.get('current_user')
+        if user:
+            user = User.objects.get(pk=user)
+        return instance.likes.filter(user=user).exists() if user else False
 
 
 class ContestWorkCreateSerializer(serializers.ModelSerializer):
diff --git a/api/v1/serializers/course.py b/api/v1/serializers/course.py
index fe06ca53..4382aae4 100644
--- a/api/v1/serializers/course.py
+++ b/api/v1/serializers/course.py
@@ -71,14 +71,10 @@ class LikeSerializer(serializers.ModelSerializer):
 
 
 class LikeCreateSerializer(serializers.ModelSerializer):
-    OBJ_TYPE_CONTEST_WORK = 'contest_work'
-
-    obj_type = serializers.CharField(required=True)
-    obj_id = serializers.IntegerField(required=True)
 
     class Meta:
         model = Like
-        fields = ['user', 'obj_type', 'obj_id']
+        fields = ['user']
 
     def create(self, validated_data):
         # FIXME
@@ -86,20 +82,9 @@ class LikeCreateSerializer(serializers.ModelSerializer):
             user = validated_data.get('user')
         else:
             user = self.context['request'].user
-        if not user: # FIXME and user.is_authenticated):
-            return Like()
-        obj_type = validated_data.pop('obj_type')
-        obj_id = validated_data.pop('obj_id')
         client_ip, is_routable = get_client_ip(self.context['request'])
-        if obj_type == self.OBJ_TYPE_CONTEST_WORK:
-            contest_work = ContestWork.objects.get(pk=obj_id)
-            # FIXME in prod: fixed
-            if contest_work.user == user or contest_work.likes.filter(user=user).exists():
-            # if contest_work.likes.filter(user=user).exists():
-                return Like()
-            like = Like.objects.create(user=user, ip=client_ip)
-            contest_work.likes.add(like)
-            return like
+        like = Like.objects.create(user=user, ip=client_ip)
+        return like
 
     def to_representation(self, instance):
         return LikeSerializer(instance, context=self.context).to_representation(instance)
diff --git a/api/v1/views.py b/api/v1/views.py
index cfe857fb..2389a4db 100644
--- a/api/v1/views.py
+++ b/api/v1/views.py
@@ -131,6 +131,8 @@ class MaterialViewSet(ExtendedModelViewSet):
 
 
 class LikeViewSet(ExtendedModelViewSet):
+    OBJ_TYPE_CONTEST_WORK = 'contest_work'
+
     queryset = Like.objects.select_related('user').all()
     serializer_class = LikeCreateSerializer
     serializer_class_map = {
@@ -143,6 +145,28 @@ class LikeViewSet(ExtendedModelViewSet):
     # FIXME
     authentication_classes = []
 
+    def create(self, request, *args, **kwargs):
+        serializer = self.get_serializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        obj_type = request.data.get('obj_type')
+        obj_id = request.data.get('obj_id')
+        user = serializer.validated_data.get('user')
+        if not user.is_active: # FIXME and user.is_authenticated):
+            return Response(status=status.HTTP_403_FORBIDDEN)
+        if obj_type == self.OBJ_TYPE_CONTEST_WORK:
+            contest_work = ContestWork.objects.get(pk=obj_id)
+            if contest_work.user == user:
+                return Response({'error': u'Нельзя голосовать за свою работу'}, status=status.HTTP_400_BAD_REQUEST)
+            if contest_work.likes.filter(user=user).exists():
+                return Response({'error': u'Вы уже голосовали за эту работу'}, status=status.HTTP_400_BAD_REQUEST)
+            if contest_work.contest.finished:
+                return Response({'error': u'Голосование закончено'}, status=status.HTTP_400_BAD_REQUEST)
+        instance = serializer.save()
+        if obj_type == self.OBJ_TYPE_CONTEST_WORK:
+            contest_work.likes.add(instance)
+        headers = self.get_success_headers(serializer.data)
+        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
+
 
 class CategoryViewSet(ExtendedModelViewSet):
     queryset = Category.objects.order_by('-id')
diff --git a/apps/content/models.py b/apps/content/models.py
index 197e1e7d..1fec0880 100644
--- a/apps/content/models.py
+++ b/apps/content/models.py
@@ -1,7 +1,10 @@
+from datetime import datetime, time
 from urllib.parse import urlparse
+from django.conf import settings
 from django.db import models
 from django.contrib.auth import get_user_model
 from django.urls import reverse_lazy
+from django.utils import timezone
 from imagekit.models import ImageSpecField
 from imagekit.processors import ResizeToCover
 
@@ -167,6 +170,10 @@ class Contest(models.Model):
     active = models.BooleanField(default=True)
     # TODO? baner
 
+    @property
+    def finished(self):
+        return datetime(2018, 8, 29, 21) < timezone.now()
+
     def save(self, *args, **kwargs):
         if self.active:
             Contest.objects.filter(active=True).update(active=False)
diff --git a/apps/content/templates/content/contest_work.html b/apps/content/templates/content/contest_work.html
index 5184faae..e4ade33d 100644
--- a/apps/content/templates/content/contest_work.html
+++ b/apps/content/templates/content/contest_work.html
@@ -35,7 +35,7 @@
       </div>
       <div class="contest-work__likes">
         <likes obj-type="contest_work" obj-id="{{ contest_work.id }}"
-               {% if user_liked %}:user-liked="true"{% endif %} likes="{{ contest_work.likes.count }}"></likes>
+               {% if user_liked %}:user-liked="true"{% endif %} likes="{{ likes_count }}"></likes>
       </div>
     </div>
   </div>
diff --git a/apps/content/views.py b/apps/content/views.py
index ff3a4deb..4d350cca 100644
--- a/apps/content/views.py
+++ b/apps/content/views.py
@@ -14,10 +14,11 @@ from apps.course.models import ContestWorkComment
 @method_decorator(login_required, name='dispatch')
 class ContestEditView(TemplateView):
     template_name = 'content/contest_edit.html'
+    query_pk_and_slug = True
 
-    def get(self, request, pk=None, lesson=None):
-        if pk:
-            self.object = get_object_or_404(Contest, pk=pk)
+    def get(self, request, slug=None, lesson=None):
+        if slug:
+            self.object = get_object_or_404(Contest, slug=slug)
         else:
             self.object = Contest()
 
@@ -58,6 +59,7 @@ class ContestWorkView(DetailView):
 
         context['user_liked'] = self.object.likes.filter(user=self.request.user).exists() \
             if self.request.user.is_authenticated else False
+        context['likes_count'] = self.object.likes.filter(user__is_active=True).count()
         return context
 
 
diff --git a/apps/school/templates/summer/promo.html b/apps/school/templates/summer/promo.html
index a07fc442..7878c9ef 100644
--- a/apps/school/templates/summer/promo.html
+++ b/apps/school/templates/summer/promo.html
@@ -46,7 +46,7 @@
             <use xlink:href="{% static 'img/sprite.svg' %}#icon-subjects"></use>
           </svg>
         </div>
-        <div class="school__title">12 уроков</div>
+        <div class="school__title">7 дисциплин</div>
         <div class="school__text">В разных техниках</div>
       </div>
       <div class="school__col">
diff --git a/project/templates/blocks/about.html b/project/templates/blocks/about.html
index c25391cd..de379799 100644
--- a/project/templates/blocks/about.html
+++ b/project/templates/blocks/about.html
@@ -30,7 +30,7 @@
             <use xlink:href="{% static 'img/sprite.svg' %}#icon-subjects"></use>
           </svg>
         </div>
-        <div class="school__title">12 уроков</div>
+        <div class="school__title">7 дисциплин</div>
         <div class="school__text">В разных техниках</div>
       </div>
       <div class="school__col">
diff --git a/project/urls.py b/project/urls.py
index 9e6f5992..60a492c4 100644
--- a/project/urls.py
+++ b/project/urls.py
@@ -84,7 +84,7 @@ urlpatterns = [
     path('school/', include(('apps.school.urls', 'school'))),
     path('test', TemplateView.as_view(template_name='templates/lilcity/test.html'), name='test'),
     path('contest/create', ContestEditView.as_view(), name='contest_create'),
-    path('contest/<int:pk>/edit', ContestEditView.as_view(), name='contest_edit'),
+    path('contest/<str:slug>/edit', ContestEditView.as_view(), name='contest_edit'),
     path('contest/<str:slug>/', ContestView.as_view(), name='contest'),
     path('contest-work/<int:pk>/', ContestWorkView.as_view(), name='contest_work'),
     path('contest-work/<int:contest_work_id>/comment', contest_work_comment, name='contest_work_comment'),
diff --git a/web/src/components/ContestWorks.vue b/web/src/components/ContestWorks.vue
index 18bb1fc8..c9d377b7 100644
--- a/web/src/components/ContestWorks.vue
+++ b/web/src/components/ContestWorks.vue
@@ -61,8 +61,12 @@
     methods: {
       load() {
         this.loading = true;
-        api.get(`/api/v1/contest-works/?contest=${this.contestId}&page=${this.page}`)
-          .then((response) => {
+        api.get(`/api/v1/contest-works/?contest=${this.contestId}&page=${this.page}&current_user=${this.$root.store.user.id}`, {
+            headers: {
+              'Authorization': `Token ${this.$root.store.accessToken}`,
+            }
+          })
+          .then(response => {
             this.loading = false;
             this.loaded = true;
             if(this.page > 1){
diff --git a/web/src/components/blocks/Likes.vue b/web/src/components/blocks/Likes.vue
index d1807254..8b3ef4c8 100644
--- a/web/src/components/blocks/Likes.vue
+++ b/web/src/components/blocks/Likes.vue
@@ -10,6 +10,7 @@
 
 <script>
   import {api} from "../../js/modules/api";
+  import {showNotification} from "../../js/modules/notification";
 
   export default {
     name: 'likes',
@@ -22,6 +23,7 @@
     },
     methods: {
       addLike(event) {
+        this.$emit('like');
         if(this.userLikedProp){
           return;
         }
@@ -36,12 +38,17 @@
               'Authorization': `Token ${this.$root.store.accessToken}`,
             }
           })
-          .then((response) => {
+          .then(response => {
             if (response.data && response.data.id) {
               this.userLikedProp = true;
               this.likesProp += 1;
               this.$emit('liked');
             }
+          })
+          .catch(({response}) => {
+            if(response.status == 400 && response.data.error){
+              showNotification('error', response.data.error);
+            }
           });
         }
       }