Changed Upvote and Downvote Functionality to be unique

backend/api/migrations/0007_remove_file_points_file_downvotes_file_upvotes.py

@@ -0,0 +1,32 @@
+# Generated by Django 4.2.11 on 2024-04-12 21:47
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("api", "0006_file_points_peeruser_points"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="file",
+            name="points",
+        ),
+        migrations.AddField(
+            model_name="file",
+            name="downvotes",
+            field=models.ManyToManyField(
+                related_name="downvoted_file", to=settings.AUTH_USER_MODEL
+            ),
+        ),
+        migrations.AddField(
+            model_name="file",
+            name="upvotes",
+            field=models.ManyToManyField(
+                related_name="upvoted_file", to=settings.AUTH_USER_MODEL
+            ),
+        ),
+    ]

backend/api/models.py

@@ -58,7 +58,13 @@ class File(models.Model):
         Course, on_delete=models.SET_NULL, null=True, related_name="files"
     )
     created_at = models.DateTimeField(auto_now_add=True)
-    points = models.IntegerField(default=0, blank=False)
+    upvotes = models.ManyToManyField(PeerUser, related_name="upvoted_file")
+    downvotes = models.ManyToManyField(PeerUser, related_name="downvoted_file")
+
+
+    @property
+    def points(self):
+        return self.upvotes.count() - self.downvotes.count()
 
     def __str__(self):
         return self.filename

backend/api/views.py

@@ -112,11 +112,14 @@ class UpvoteFile(APIView):
     permission_classes = [IsAuthenticated]
 
     def post(self, request, file_id):
+        user = request.user
         update_user_ip(request)
 
         try:
             file = File.objects.get(id=file_id)
-            file.points += 1
+            if file.downvotes.contains(user):
+                file.downvotes.remove(user)
+            file.upvotes.add(user)
             file.save()
             return Response(
                 {"msg": f"Upvoted {file.filename}", "file_points": file.points},
@@ -135,11 +138,14 @@ class DownvoteFile(APIView):
     permission_classes = [IsAuthenticated]
 
     def post(self, request, file_id):
+        user = request.user
         update_user_ip(request)
 
         try:
             file = File.objects.get(id=file_id)
-            file.points -= 1
+            if file.upvotes.contains(user):
+                file.upvotes.remove(user)
+            file.downvotes.add(user)
             file.save()
             return Response(
                 {"msg": f"Downvoted {file.filename}", "file_points": file.points},