Add live lesson detail view & perms

apps/school/urls.py

@@ -1,8 +1,9 @@
 from django.urls import path, include
 
-from .views import LiveLessonsView, LiveLessonEditView
+from .views import LiveLessonsView, LiveLessonEditView, LiveLessonsDetailView
 
 urlpatterns = [
     path('lessons/', LiveLessonsView.as_view(), name='lessons'),
     path('lessons/<int:pk>/edit', LiveLessonEditView.as_view(), name='lessons-edit'),
+    path('lessons/<int:pk>/', LiveLessonsDetailView.as_view(), name='lesson-detail'),
 ]

apps/school/views.py

@@ -1,28 +1,41 @@
-from django.contrib.auth.decorators import login_required
+from django.contrib.auth import get_user_model
+from django.contrib.auth.decorators import login_required, user_passes_test
 from django.shortcuts import get_object_or_404
 from django.utils.decorators import method_decorator
-from django.views.generic import ListView, UpdateView, TemplateView
+from django.views.generic import ListView, UpdateView, TemplateView, DetailView
 
 from .models import LiveLesson
 
+User = get_user_model()
 
+
+def is_admin_or_teacher(function=None, login_url=None):
+    actual_decorator = user_passes_test(
+        lambda u: u.role in [User.ADMIN_ROLE, User.TEACHER_ROLE],
+        login_url=login_url,
+    )
+    if function:
+        return actual_decorator(function)
+    return actual_decorator
+
+
+@method_decorator([login_required, is_admin_or_teacher], name='dispatch')
 class LiveLessonsView(ListView):
     model = LiveLesson
     template_name = 'school/livelessons_list.html'
 
-    def get(self, request, pk=None):
+
-        if request.user.role not in [User.ADMIN_ROLE, User.TEACHER_ROLE]:
+@method_decorator([login_required, is_admin_or_teacher], name='dispatch')
-            raise Http404
+class LiveLessonsDetailView(DetailView):
-        return super().get(request)
+    model = LiveLesson
+    template_name = 'school/livelesson_detail.html'
 
 
-@method_decorator(login_required, name='dispatch')
+@method_decorator([login_required, is_admin_or_teacher], name='dispatch')
 class LiveLessonEditView(TemplateView):
     template_name = 'course/course_edit.html'
 
     def get(self, request, pk=None):
-        if request.user.role not in [User.ADMIN_ROLE, User.TEACHER_ROLE]:
-            raise Http404
         if pk:
             self.object = get_object_or_404(LiveLesson, pk=pk)
         else: