Make bookmarks page login required

bookmarks/views.py

@@ -1,9 +1,10 @@
 from django.utils import timezone
 from django.views.generic.list import ListView
+from django.contrib.auth.mixins import LoginRequiredMixin
 
 from .models import Bookmark
 
-class BookmarkListView(ListView):
+class BookmarkListView(LoginRequiredMixin, ListView):
     model = Bookmark
     paginate_by = 20