fix: sifting dashboard from function base to class based views

dashboards/templates/dashboard/summary.html

@@ -41,6 +41,10 @@
             <div class="card-header">Total</div>
             <p class="h1">{{ total_book_loans }}</p>
           </div>
+          <div class="card">
+            <div class="card-header">Upcoming</div>
+            <p class="h1">{{ total_upcoming }}</p>
+          </div>
           <div class="card">
             <div class="card-header">Overdue</div>
             <p class="h1">{{ total_overdue }}</p>

dashboards/urls.py

 from django.urls import path, include
-from dashboards.views import index, UpcomingLoanView, OverduedLoanView
+from dashboards.views import DashboardView, UpcomingLoanView, OverduedLoanView
 
 urlpatterns = [
-    path("", index, name="dashboard"),
+    path("", DashboardView.as_view(), name="dashboard"),
     path("books/", include("books.urls")),
     path("members/", include("members.urls")),
     path("book-loans/", include("book_loans.urls")),

dashboards/views.py

@@ -78,34 +78,37 @@ class HomePage(TemplateView):
     template_name = "homepage.html"
 
 
-def index(request):
-    latest_login_history = LoginHistory.objects.order_by("-login_at")[:10]
+class DashboardView(TemplateView):
+    template_name = "dashboard/index.html"
+
+    login_history = LoginHistory.objects.order_by("-login_at")[:10]
+    book_loans = BookLoans.objects.all()
     total_book = Book.objects.count()
     total_member = Members.objects.count()
-    total_book_loans = BookLoans.objects.count()
-
-    now = datetime.now()
-    overdue_loans = BookLoans.objects.filter(
-        due_date__lte=now, return_date=None
-    ).order_by("created_at")
-
-    due_date_treshold = now.today() + timedelta(days=3)
-
-    upcoming_loans = BookLoans.objects.filter(
-        due_date__lte=due_date_treshold, return_date=None
-    ).filter(due_date__gte=now.today())
-
-    context = {
-        "login_histories": latest_login_history,
-        "total_book": total_book,
-        "total_member": total_member,
-        "total_book_loans": total_book_loans,
-        "total_overdue": overdue_loans.count(),
-        "overdue_loans": overdue_loans,
-        "upcoming_loans": upcoming_loans,
-    }
-
-    if overdue_loans.exists():
+    total_book_loans = book_loans.count()
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        now = datetime.now()
+        overdue_loans = self.book_loans.filter(
+            due_date__lte=now, return_date=None
+        ).order_by("-created_at")[:10]
+
+        due_date_treshold = now.today() + timedelta(days=3)
+
+        upcoming_loans = (
+            self.book_loans.filter(due_date__lte=due_date_treshold, return_date=None)
+            .filter(due_date__gte=now.today())
+            .order_by("-created_at")[:10]
+        )
+
+        context["login_histories"] = self.login_history
+        context["total_book"] = self.total_book
+        context["total_member"] = self.total_member
+        context["total_book_loans"] = self.total_book_loans
+        context["total_overdue"] = overdue_loans.count()
+        context["total_upcoming"] = upcoming_loans.count()
         context["overdue_loans"] = overdue_loans
+        context["upcoming_loans"] = upcoming_loans
 
-    return render(request, "dashboard/index.html", context)
+        return context