Exercise 2: Add occupancy percentage to dashboard

pms/templates/dashboard.html

@@ -22,6 +22,10 @@ <h1 class="dashboard-value">{{dashboard.outcoming_guests}}</h1>
             <h5 class="small">Total facturado</h5>
             <h1 class="dashboard-value">€ {% if dashboard.invoiced.total__sum == None %}0.00{% endif %} {{dashboard.invoiced.total__sum|floatformat:2}}</h1>
         </div>
+        <div class="card text-white p-3 card-customization" style="background-color: #8e44ad;">
+            <h5 class="small">% Ocupación</h5>
+            <h1 class="dashboard-value">{{dashboard.occupancy}}%</h1>
+        </div>
     </div>
 </div>
 {% endblock content%}

pms/tests.py

@@ -1,3 +1,58 @@
-from django.test import TestCase
+from datetime import date
 
-# Create your tests here.
+from django.test import TestCase, Client
+from django.urls import reverse
+
+from .models import Room, Room_type, Booking, Customer
+
+
+class DashboardOccupancyTest(TestCase):
+    def setUp(self):
+        self.client = Client()
+        self.room_type = Room_type.objects.create(name="Individual", price=20, max_guests=1)
+        self.room1 = Room.objects.create(name="Room 1", room_type=self.room_type, description="")
+        self.room2 = Room.objects.create(name="Room 2", room_type=self.room_type, description="")
+        self.customer = Customer.objects.create(name="Test", email="test@test.com", phone="123")
+
+    def test_occupancy_zero_when_no_bookings(self):
+        response = self.client.get(reverse("dashboard"))
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.context["dashboard"]["occupancy"], 0)
+
+    def test_occupancy_with_confirmed_bookings(self):
+        Booking.objects.create(
+            checkin=date(2025, 1, 1), checkout=date(2025, 1, 3),
+            room=self.room1, customer=self.customer,
+            guests=1, total=40, code="AAAA1111", state="NEW"
+        )
+        response = self.client.get(reverse("dashboard"))
+        # 1 confirmed / 2 rooms = 50%
+        self.assertEqual(response.context["dashboard"]["occupancy"], 50.0)
+
+    def test_occupancy_ignores_deleted_bookings(self):
+        Booking.objects.create(
+            checkin=date(2025, 1, 1), checkout=date(2025, 1, 3),
+            room=self.room1, customer=self.customer,
+            guests=1, total=40, code="AAAA1111", state="DEL"
+        )
+        response = self.client.get(reverse("dashboard"))
+        self.assertEqual(response.context["dashboard"]["occupancy"], 0)
+
+    def test_occupancy_100_percent(self):
+        Booking.objects.create(
+            checkin=date(2025, 1, 1), checkout=date(2025, 1, 3),
+            room=self.room1, customer=self.customer,
+            guests=1, total=40, code="AAAA1111", state="NEW"
+        )
+        Booking.objects.create(
+            checkin=date(2025, 1, 1), checkout=date(2025, 1, 3),
+            room=self.room2, customer=self.customer,
+            guests=1, total=40, code="BBBB2222", state="NEW"
+        )
+        response = self.client.get(reverse("dashboard"))
+        self.assertEqual(response.context["dashboard"]["occupancy"], 100.0)
+
+    def test_occupancy_no_rooms(self):
+        Room.objects.all().delete()
+        response = self.client.get(reverse("dashboard"))
+        self.assertEqual(response.context["dashboard"]["occupancy"], 0)

pms/views.py

@@ -202,20 +202,25 @@ def get(self, request):
                      .values("id")
                      ).count()
 
-        # get outcoming guests
+        # get invoiced total
         invoiced = (Booking.objects
                     .filter(created__range=today_range)
                     .exclude(state="DEL")
                     .aggregate(Sum('total'))
                     )
 
+        # calculate occupancy percentage
+        total_rooms = Room.objects.count()
+        confirmed_bookings = Booking.objects.filter(state="NEW").count()
+        occupancy = round((confirmed_bookings / total_rooms) * 100, 2) if total_rooms > 0 else 0
+
         # preparing context data
         dashboard = {
             'new_bookings': new_bookings,
             'incoming_guests': incoming,
             'outcoming_guests': outcoming,
-            'invoiced': invoiced
-
+            'invoiced': invoiced,
+            'occupancy': occupancy,
         }
 
         context = {