diff --git a/cinema/models.py b/cinema/models.py
index d48cc7ca1..7cbc8cf61 100644
--- a/cinema/models.py
+++ b/cinema/models.py
@@ -20,8 +20,8 @@ class Movie(models.Model):
     title = models.CharField(max_length=255)
     description = models.TextField()
     duration = models.IntegerField()
-    genres = models.ManyToManyField(Genre)
-    actors = models.ManyToManyField(Actor)
+    genres = models.ManyToManyField(Genre, related_name="movies")
+    actors = models.ManyToManyField(Actor, related_name="movies")
 
     def __str__(self):
         return self.title, self.description, self.duration, self.genres
diff --git a/cinema/views.py b/cinema/views.py
index 4795422a1..360279a29 100644
--- a/cinema/views.py
+++ b/cinema/views.py
@@ -20,10 +20,9 @@ def get(self, request):
 
     def post(self, request):
         serializer = GenreSerializer(data=request.data)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data, status=status.HTTP_201_CREATED)
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data, status=status.HTTP_201_CREATED)
 
 
 class GenreDetail(APIView):
@@ -38,18 +37,16 @@ def get(self, request, pk):
     def put(self, request, pk):
         genre = self.get_object(pk)
         serializer = GenreSerializer(genre, data=request.data)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data)
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data)
 
     def patch(self, request, pk):
         genre = self.get_object(pk)
         serializer = GenreSerializer(genre, data=request.data, partial=True)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data)
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data)
 
     def delete(self, request, pk):
         genre = self.get_object(pk)
diff --git a/requirements.txt b/requirements.txt
index 56e135547..99938e15f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,4 @@ flake8-quotes==3.3.1
 flake8-variables-names==0.0.5
 pep8-naming==0.13.2
 django-debug-toolbar==3.2.4
-djangorestframework==3.13.1
\ No newline at end of file
+djangorestframework==3.13.1