Add models file

MUOR/MUOR/models.py

@@ -0,0 +1,7 @@
+from django.contrib.auth.models import User
+from django.db import models
+
+
+class Session(models.Model):
+    user = models.ForeignKey(User, primary_key=True, on_delete=models.CASCADE)
+    port = models.PositiveIntegerField(null=False, unique=True)