Fixed #21771 -- Made log_deletion consistent with other log methods.

    def log_deletion(self, request, object, object_repr):

        """

        Log that an object will be deleted. Note that this method is called

        before the deletion.

        Log that an object will be deleted. Note that this method must be

        called before the deletion.

        The default implementation creates an admin LogEntry object.

        """

        from django.contrib.admin.models import LogEntry, DELETION

        LogEntry.objects.log_action(

            user_id=request.user.pk,

            content_type_id=get_content_type_for_model(self.model).pk,

            content_type_id=get_content_type_for_model(object).pk,

            object_id=object.pk,

            object_repr=object_repr,

            action_flag=DELETION