Добавил во все вьюхи Login mixin для аутентифициорованных пользователей

source/webapp/views/courses_views.py

+from django.conf import settings
+from django.shortcuts import redirect
 from django.urls.base import reverse_lazy
 from django.views.generic import ListView, CreateView, DetailView, DeleteView
 from django.views.generic import UpdateView
-
+from django.contrib.auth.mixins import LoginRequiredMixin
 
 from webapp.models import Course
 from webapp.forms import CourseForm
 
 
-class CourseCreateView(CreateView):
+class CourseCreateView(LoginRequiredMixin, CreateView):
     template_name = 'courses/create.html'
     form_class = CourseForm
     model = Course 
@@ -25,19 +27,19 @@ class CoursesListView(ListView):
     paginate_by = 6
 
 
-class CourseDetailView(DetailView):
+class CourseDetailView(LoginRequiredMixin, DetailView):
     model = Course 
     template_name = 'courses/detail.html'
     pk_url_kwarg = 'course_pk'
 
 
-class CourseDeleteView(DeleteView): 
+class CourseDeleteView(LoginRequiredMixin, DeleteView): 
     model = Course 
     template_name = 'courses/delete.html'
     success_url = reverse_lazy('webapp:courses_list')
 
 
-class CourseEditView(UpdateView):
+class CourseEditView(LoginRequiredMixin, UpdateView):
     model = Course
     fields = ['title', 'description', 'start_date']
     template_name = 'courses/edit.html'