class Base(View):
   title = 'abc'
   slug = 'abc-12'
   def get_context(self, request):
       return {'title': self.title, 'slug': self.slug }

class Logbook(Base)
   mode = 'read'
   def get_context(self, request)
       # call super class
       return super().add('mode': self.mode)
       # i want {'title': 'abc', 'slug': 'abc-12', mode: 'read' }

   def get(self, request)
       context = self.get_context(request)