invoked get_absolute_url() on List model to achieve DRY urls in views

src/apps/dashboard/models.py

@@ -1,7 +1,10 @@
 from django.db import models
+from django.urls import reverse
 
 class List(models.Model):
-    pass
+    def get_absolute_url(self):
+        return reverse("view_list", args=[self.id])
+    
 
 class Item(models.Model):
     text = models.TextField(default='')

src/apps/dashboard/tests/test_models.py

@@ -42,3 +42,7 @@ class ListAndItemModelsTest(TestCase):
         item = Item(list=mylist, text="")
         with self.assertRaises(ValidationError):
             item.full_clean()
+
+    def test_get_absolute_url(self):
+        mylist = List.objects.create()
+        self.assertEqual(mylist.get_absolute_url(), f"/apps/dashboard/{mylist.id}/")

src/apps/dashboard/views.py

@@ -15,7 +15,7 @@ def new_list(request):
         nulist.delete()
         error = "You can't have an empty list item"
         return render(request, "apps/dashboard/home.html", {"error": error})
-    return redirect(f'/apps/dashboard/{nulist.id}/')
+    return redirect(nulist)
 
 def view_list(request, list_id):
     our_list = List.objects.get(id=list_id)
@@ -26,7 +26,7 @@ def view_list(request, list_id):
             item = Item(text=request.POST['item_text'], list=our_list)
             item.full_clean()
             item.save()
-            return redirect(f'/apps/dashboard/{our_list.id}/')
+            return redirect(our_list)
         except ValidationError:
             error = "You can't have an empty list item"