Session().flush()

        #members

        for member in reviewers:

            _usr = self._get_user(member)

            reviewer = PullRequestReviewers(_usr, new)

            self.sa.add(reviewer)

        #reset state to under-review

        ChangesetStatusModel().set_status(

            repo=org_repo,

            status=ChangesetStatus.STATUS_UNDER_REVIEW,

            user=created_by_user,

            pull_request=new

        )

        #notification to reviewers

        notif = NotificationModel()

        pr_url = h.url('pullrequest_show', repo_name=other_repo.repo_name,

                       pull_request_id=new.pull_request_id,

                       qualified=True,

        )

        subject = safe_unicode(

            h.link_to(

                {'user': created_by_user.username,

                 'pr_id': new.pull_request_id},

                pr_url

            )

        )

        body = description

        kwargs = {

            'pr_title': title,

            'pr_user_created': h.person(created_by_user.email),

            'pr_repo_url': h.url('summary_home', repo_name=other_repo.repo_name,

                                 qualified=True,),

            'pr_url': pr_url,

            'pr_revisions': revisions

        }

        notif.create(created_by=created_by_user, subject=subject, body=body,

                     recipients=reviewers,

                     type_=Notification.TYPE_PULL_REQUEST, email_kwargs=kwargs)

        return new

    def update_reviewers(self, pull_request, reviewers_ids):

        reviewers_ids = set(reviewers_ids)

        pull_request = self.__get_pull_request(pull_request)

        current_reviewers = PullRequestReviewers.query()\

                            .filter(PullRequestReviewers.pull_request==

                                   pull_request)\