LIL-151. Disable cache for ajax request in CoursesView

apps/course/views.py

@@ -7,6 +7,7 @@ from django.http import JsonResponse, Http404
 from django.shortcuts import get_object_or_404
 from django.template import loader, Context, Template
 from django.views.generic import View, CreateView, DetailView, ListView, TemplateView
+from django.utils.cache import add_never_cache_headers
 from django.utils.decorators import method_decorator
 from django.views.decorators.csrf import csrf_exempt
 from django.views.decorators.http import require_http_methods
@@ -245,12 +246,14 @@ class CoursesView(ListView):
             else:
                 prev_url = None
                 next_url = None
-            return JsonResponse({
+            response = JsonResponse({
                 'success': True,
                 'content': html,
                 'prev_url': prev_url,
                 'next_url': next_url,
             })
+            add_never_cache_headers(response)
+            return response
         else:
             return super().get(request, args, kwargs)