Add cats to the admin and give them a more useful string representation

entries/models.py

@@ -28,6 +28,9 @@ class Cat(models.Model):
     name = models.CharField(max_length=255, unique=True)
     slug = models.CharField(max_length=255, unique=True)
 
+    def __str__(self):
+        return '#' + self.name
+
     @property
     def url(self):
         return reverse('entries:cat', args=(self.slug,))