adds vote posting

also moves some validation code to the model

playlist/models/vote.py

@@ -1,10 +1,11 @@
 from django.db import models
 from django.contrib.auth.models import User
+from django.core.validators import MinValueValidator, MaxValueValidator
 
 class Vote(models.Model):
     class Meta:
         unique_together = ["user", "track"]
     track = models.ForeignKey('Track', on_delete=models.CASCADE)
     user = models.ForeignKey(User, on_delete=models.CASCADE)
-    points = models.IntegerField()
+    points = models.IntegerField(validators=[MinValueValidator(1), MaxValueValidator(5)])
     skipped = models.BooleanField(default=False)

playlist/serializers/__init__.py

@@ -3,4 +3,4 @@ from .artist import ArtistSerializer
 from .user import UserSerializer
 from .album import AlbumSerializer
 from .profile import ProfileSerializer, BackgroundSerializer
-from .vote import VoteSerializer
+from .vote import *

playlist/serializers/vote.py

@@ -1,5 +1,5 @@
 from rest_framework import serializers
-from playlist.models import Vote
+from playlist.models import Vote, Track
 
 class VoteSerializer(serializers.HyperlinkedModelSerializer):
     class Meta:
@@ -10,3 +10,19 @@ class VoteSerializer(serializers.HyperlinkedModelSerializer):
             'track': {'view_name': 'api-track', 'lookup_field': 'id'},
             'user': {'view_name': 'api-user', 'lookup_field': 'id'}
         }
+
+class VoteSaveSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Vote
+        fields = ['track', 'points', 'skipped']
+
+    def create(self, validated_data):
+        """
+        Create a new vote. Deletes a previous skipped vote if it exists.
+        """
+        user = self.context['request'].user
+        track = validated_data['track']
+        previous_vote = Vote.objects.filter(user=user, track=track).first()
+        if previous_vote and previous_vote.skipped:
+            previous_vote.delete()
+        return Vote.objects.create(**validated_data)

playlist/urls.py

@@ -6,15 +6,15 @@ from django.conf.urls.static import static
 urlpatterns = [
     ### API
     path('api/', views.api_root, name="api-root"),
-    path('api/track', views.TrackListView.as_view(), name="api-tracks"),
+    path('api/track/', views.TrackListView.as_view(), name="api-tracks"),
     path('api/track/<id>', views.TrackDetailView.as_view(), name="api-track"),
     path('api/artist/<id>', views.ArtistDetailView.as_view(), name="api-artist"),
     path('api/artist', views.ArtistListView.as_view(), name="api-artists"),
     path('api/album/<id>', views.AlbumDetailView.as_view(), name="api-album"),
-    path('api/album', views.AlbumListView.as_view(), name="api-albums"),
-    path('api/vote', views.VoteListView.as_view(), name="api-votes"),
+    path('api/album/', views.AlbumListView.as_view(), name="api-albums"),
+    path('api/vote/', views.VoteListView.as_view(), name="api-votes"),
     path('api/vote/<id>', views.VoteDetailView.as_view(), name="api-vote"),
-    path('api/user', views.UserListView.as_view(), name="api-users"),
+    path('api/user/', views.UserListView.as_view(), name="api-users"),
     path('api/user/<int:id>', views.UserDetailView.as_view(), name="api-user"),
     path('api/user/<int:user_id>/votes', views.VoteListView.as_view(), name="api-user-votes"),
     path('api/profile/<int:id>', views.ProfileDetailView.as_view(), name="api-profile"),

playlist/views/api/root.py

@@ -10,4 +10,5 @@ def api_root(request, format=None):
         'artists': reverse('api-artists', request=request, format=format),
         'users': reverse('api-users', request=request, format=format),
         'albums': reverse('api-albums', request=request, format=format),
+        'votes': reverse('api-votes', request=request, format=format),
     })

playlist/views/api/vote.py

@@ -1,9 +1,10 @@
+from django.db import IntegrityError
 from rest_framework.views import APIView
 from rest_framework.response import Response
 from rest_framework.authentication import SessionAuthentication
 from rest_framework.permissions import IsAuthenticated
-from playlist.models import Vote
-from playlist.serializers import VoteSerializer
+from playlist.models import Vote, Profile
+from playlist.serializers import VoteSerializer, VoteSaveSerializer
 
 class VoteListView(APIView):
     authentication_classes = [SessionAuthentication]
@@ -17,6 +18,26 @@ class VoteListView(APIView):
         serializer = VoteSerializer(votes, many=True, context={'request': request})
         return Response(serializer.data)
 
+    def post(self, request):
+        (profile,_) = Profile.objects.get_or_create(user=request.user)
+        if not profile.can_vote:
+            return Response({'error': 'User cannot vote'}, status=403)
+        serializer = VoteSaveSerializer(data=request.data, context={'request': request})
+        if serializer.is_valid():
+            try:
+                serializer.save(user=request.user)
+                return Response(serializer.data, status=201)
+            except IntegrityError:
+                return Response({'error': 'Duplicate vote'}, status=400)
+        return Response(serializer.errors, status=400)
+
+    def delete(self, request):
+        if request.user.is_superuser:
+            Vote.objects.all().delete()
+            return Response(status=204)
+        else:
+            return Response(status=403)
+
 class VoteDetailView(APIView):
     authentication_classes = [SessionAuthentication]
     permission_classes = [IsAuthenticated]