Many times you will want to cache something that is based on dynamic data. In these cases, you have to build dynamic keys that contain all information required to uniquely identify the cached data. Edit the views.py file of the courses application and modify the CourseListView view to make it look like this:
class CourseListView(TemplateResponseMixin, View): model = Course template_name = 'courses/course/list.html' def get(self, request, subject=None): subjects = cache.get('all_subjects') if not subjects: subjects = Subject.objects.annotate( total_courses=Count('courses')) cache.set('all_subjects', subjects) all_courses = Course.objects.annotate( total_modules=Count('modules')) if subject: subject = get_object_or_404(Subject, ...
