code: def get_object(self, **kwargs):
          
          if hasattr(self, 'object') and self.object:
              return self.object
  
          obj = super(CommonSingleObjectViewMixin, self).get_object(**kwargs)
          self.object = obj
          return obj
docs: Sometimes preprocessing of a view need to happen before the object
          attribute has been set for a view.  In this case, just return the
          object if it has already been set when it's called down the road since
          there's no need to make another query.