Add HTMX support for exam selection and update related templates and views

generic/views.py

@@ -567,6 +567,63 @@ def generic_exam_json_edit(request):
         return JsonResponse(data, status=400)
 
 
+@login_required
+def generic_exam_htmx(request):
+    """HTMX-specific endpoint for selecting an exam and adding selected questions.
+
+    GET: returns the exam selection fragment (same as earlier partial)
+    POST: expects 'type' and checkbox list 'selection' (or selection[]) and 'exam_id'
+          adds selected question ids to the chosen exam and returns a small HTML fragment
+          or JSON suitable for HTMX swapping.
+    """
+    if request.method == "GET":
+        question_type = request.GET.get("type")
+        if not question_type:
+            return HttpResponse("Missing type", status=400)
+        try:
+            Exam = get_exam_model_from_app_name(question_type)
+        except Exception:
+            return HttpResponse("Unknown type", status=400)
+
+        exams = Exam.objects.filter(archive=False, exam_mode=True).order_by("name")[:200]
+        return render(request, "generic/partials/exam_select_fragment.html", {"exams": exams, "type": question_type})
+
+    if request.method == "POST":
+        question_type = request.POST.get("type")
+        if not question_type:
+            return JsonResponse({"status": "error", "message": "missing type"}, status=400)
+
+        try:
+            Exam = get_exam_model_from_app_name(question_type)
+        except Exception:
+            return JsonResponse({"status": "error", "message": "unknown type"}, status=400)
+
+        exam = get_object_or_404(Exam, pk=request.POST.get("exam_id"))
+
+        # read checkbox selections
+        sel = request.POST.getlist("selection") or request.POST.getlist("selection[]")
+        question_ids = []
+        for s in sel:
+            try:
+                question_ids.append(int(s))
+            except Exception:
+                continue
+
+        add_count = 0
+        for i in question_ids:
+            if not exam.exam_questions.filter(pk=i).exists():
+                add_count += 1
+                exam.exam_questions.add(i)
+
+        if add_count > 0:
+            exam.save()
+
+        # return a small HTMX-friendly fragment summarising the result
+        return render(request, "generic/partials/exam_select_result.html", {"added": add_count, "exam": exam})
+
+    return HttpResponse(status=405)
+
+
 class ExamViews(View, LoginRequiredMixin):
     def __init__(
         self,