First commit of the V2.

New base, new info.

music/decorators.py

@@ -0,0 +1,18 @@
+from rest_framework.response import Response
+from rest_framework.views import status
+
+
+def validate_request_data(fn):
+    def decorated(*args, **kwargs):
+        # args[0] == GenericView Object
+        title = args[0].request.data.get("title", "")
+        artist = args[0].request.data.get("artist", "")
+        if not title and not artist:
+            return Response(
+                data={
+                    "message": "Both title and artist are required to add a song"
+                },
+                status=status.HTTP_400_BAD_REQUEST
+            )
+        return fn(*args, **kwargs)
+    return decorated