apps.dashboard.models, .tests & .views all handle new list creation when a new task item is added (but for now, undesirably, always a new list for each task item; made migrations accordingly

apps/dashboard/migrations/0003_list_item_list.py

@@ -0,0 +1,25 @@
+# Generated by Django 6.0 on 2026-01-03 03:05
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dashboard', '0002_item_text'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='List',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='item',
+            name='list',
+            field=models.ForeignKey(default=None, on_delete=django.db.models.deletion.CASCADE, to='dashboard.list'),
+        ),
+    ]

apps/dashboard/models.py

@@ -1,4 +1,9 @@
 from django.db import models
 
+class List(models.Model):
+    pass
+
 class Item(models.Model):
     text = models.TextField(default='')
+    list = models.ForeignKey(List, default=None, on_delete=models.CASCADE)
+

apps/dashboard/tests.py

@@ -1,5 +1,5 @@
 from django.test import TestCase
-from .models import Item
+from .models import Item, List
 
 class HomePageTest(TestCase):
     def test_uses_home_template(self):
@@ -11,23 +11,33 @@ class HomePageTest(TestCase):
         self.assertContains(response, '<form method="POST" action="/apps/dashboard/newlist">')
         self.assertContains(response, '<input name="item_text"')
 
-class ItemModelTest(TestCase):
+class ListAndItemModelsTest(TestCase):
     def test_saving_and_retrieving_items(self):
+        mylist = List()
+        mylist.save()
+
         first_item = Item()
         first_item.text = "The first (ever) list item"
+        first_item.list = mylist
         first_item.save()
 
         second_item = Item()
         second_item.text = "A sequel somehow better than the first"
+        second_item.list = mylist
         second_item.save()
 
+        saved_list = List.objects.get()
+        self.assertEqual(saved_list, mylist)
+
         saved_items = Item.objects.all()
         self.assertEqual(saved_items.count(), 2)
 
         first_saved_item = saved_items[0]
         second_saved_item = saved_items[1]
         self.assertEqual(first_saved_item.text, "The first (ever) list item")
+        self.assertEqual(first_saved_item.list, mylist)
         self.assertEqual(second_saved_item.text, "A sequel somehow better than the first")
+        self.assertEqual(second_saved_item.list, mylist)
 
 class DashViewTest(TestCase):
     def test_uses_list_template(self):
@@ -41,8 +51,9 @@ class DashViewTest(TestCase):
 
     def test_displays_all_list_items(self):
         # Given/Arrange
-        Item.objects.create(text='itemey 1')
-        Item.objects.create(text='itemey 2')
+        mylist = List.objects.create()
+        Item.objects.create(text='itemey 1', list=mylist)
+        Item.objects.create(text='itemey 2', list=mylist)
         # When/Act
         response = self.client.get('/apps/dashboard/the-only-list-in-the-world/')
         # Then/Assert
@@ -51,7 +62,7 @@ class DashViewTest(TestCase):
 
 class NewListTest(TestCase):
     def test_can_save_a_POST_request(self):
-        self. client.post('/apps/dashboard/newlist', data={'item_text': "A new list item"})
+        self. client.post('/apps/dashboard/newlist', data={'item_text': 'A new list item'})
         self.assertEqual(Item.objects.count(), 1)
         new_item = Item.objects.get()
         self.assertEqual(new_item.text, 'A new list item')

apps/dashboard/views.py

@@ -1,5 +1,5 @@
 from django.shortcuts import redirect, render
-from .models import Item
+from .models import Item, List
 
 def home_page(request):
     return render(request, 'apps/dashboard/home.html')
@@ -9,5 +9,6 @@ def view_list(request):
     return render(request, 'apps/dashboard/list.html', {'items': items})
 
 def new_list(request):
-    Item.objects.create(text=request.POST['item_text'])
+    nulist = List.objects.create()
+    Item.objects.create(text=request.POST['item_text'], list=nulist)
     return redirect('/apps/dashboard/the-only-list-in-the-world/')