Add login and home page

notes/models.py

@@ -1,5 +1,6 @@
 from django.contrib.auth.models import AbstractUser
 from django.db import models
+from django.utils import timezone
 
 # Create your models here.
 
@@ -7,6 +8,16 @@ class User(AbstractUser):
     allow_notes_from = models.ManyToManyField('User', related_name='allowed_notes_to', blank=True)
     expiry_seconds = models.PositiveIntegerField(default=86400)
 
+    @property
+    def alive_received_notes(self) -> models.QuerySet["Note"]:
+        return self.received_notes.filter(expiry__gt=timezone.now()).select_related("from_user", "to_user")
+
+    @property
+    def visible_name(self) -> str:
+        if self.first_name or self.last_name:
+            return self.get_full_name()
+        return self.username
+
 
 class Note(models.Model):
     from_user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='created_notes')