Add functionality to filter exam collections by archived status

generic/templates/generic/examcollection_list.html

@@ -4,6 +4,14 @@
 
 <h1 class="mb-4">Exam Collections</h1>
 
+<form method="get" class="mb-3" id="archive-filter-form">
+    <div class="form-check form-switch">
+        <input class="form-check-input" type="checkbox" id="showArchived" name="show_archived" value="1" onchange="this.form.submit()"
+               {% if request.GET.show_archived %}checked{% endif %}>
+        <label class="form-check-label" for="showArchived">Show archived collections</label>
+    </div>
+</form>
+
 {% if object_list %}
 <div class="row row-cols-1 row-cols-md-2 row-cols-lg-3 g-3">
     {% for collection in object_list %}

generic/views.py

@@ -5342,8 +5342,15 @@ class ExamCollectionList(ListView):
     
     def get_queryset(self):
         """Annotate exam counts per collection and prefetch authors to avoid N+1 queries in templates."""
+        # allow toggling whether archived collections are included via ?show_archived=1
+        show_archived = self.request.GET.get("show_archived")
+
+        base_qs = ExamCollection.objects.all()
+        if not show_archived:
+            base_qs = base_qs.filter(archive=False)
+
         qs = (
-            ExamCollection.objects.all()
+            base_qs
             .annotate(
                 anatomy_count=Count("anatomy_exams", filter=Q(anatomy_exams__archive=False)),
                 longs_count=Count("longs_exams", filter=Q(longs_exams__archive=False)),