try:

            pull_request = PullRequestModel().create(

                self.authuser.user_id, org_repo_name, org_ref, other_repo_name,

                other_ref, revisions, reviewers, title, description

            )

            Session().commit()

            h.flash(_('Successfully opened new pull request'),

                    category='success')

        except Exception:

            h.flash(_('Error occurred while creating pull request'),

                    category='error')

            log.error(traceback.format_exc())

            return redirect(url('pullrequest_home', repo_name=repo_name))

        return redirect(url('pullrequest_show', repo_name=other_repo_name,

                            pull_request_id=pull_request.pull_request_id))

    @LoginRequired()

    @NotAnonymous()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def copy_update(self, repo_name, pull_request_id):

        old_pull_request = PullRequest.get_or_404(pull_request_id)

        assert old_pull_request.other_repo.repo_name == repo_name

        org_repo = RepoModel()._get_repo(old_pull_request.org_repo.repo_name)

        org_ref_type, org_ref_name, org_rev = old_pull_request.org_ref.split(':')

        updaterev = request.POST.get('updaterev')

        if updaterev:

            new_org_rev = self._get_ref_rev(org_repo, 'rev', updaterev)

        else:

            # assert org_ref_type == 'branch', org_ref_type # TODO: what if not?

            new_org_rev = self._get_ref_rev(org_repo, org_ref_type, org_ref_name)

        other_repo = RepoModel()._get_repo(old_pull_request.other_repo.repo_name)

        other_ref_type, other_ref_name, other_rev = old_pull_request.other_ref.split(':') # other_rev is ancestor

        #assert other_ref_type == 'branch', other_ref_type # TODO: what if not?

        new_other_rev = self._get_ref_rev(other_repo, other_ref_type, other_ref_name)

        cs_ranges, _cs_ranges_not, ancestor_rev = CompareController._get_changesets(org_repo.scm_instance.alias,

            other_repo.scm_instance, new_other_rev, # org and other "swapped"

            org_repo.scm_instance, new_org_rev)

        old_revisions = set(old_pull_request.revisions)

        revisions = [cs.raw_id for cs in cs_ranges]

        new_revisions = [r for r in revisions if r not in old_revisions]

        lost = old_revisions.difference(revisions)

        </div>

        ${h.form(url('pullrequest_copy_update',repo_name=c.repo_name,pull_request_id=c.pull_request.pull_request_id), method='post')}

          <div class="field">

            <div class="label-summary">

              <label>${_('Update')}:</label>

            </div>

            <div class="input">

              <div class="msg-div">${c.update_msg}</div>

              %if c.available:

              <div style="max-height:200px; overflow-y:auto; overflow-x:hidden; margin-bottom: 10px">

                <table class="noborder">

                  %for cnt, cs in enumerate(reversed(c.available)):

                    <tr>

                    <td>${h.radio(name='updaterev', value=cs.raw_id)}</td>

                    <td>${h.link_to(h.show_id(cs),h.url('changeset_home',repo_name=c.org_repo.repo_name,revision=cs.raw_id))}</td>

                    <td><div class="message" style="white-space:normal; height:1.1em; max-width: 500px; padding:0">${h.urlify_commit(cs.message, c.repo_name)}</div></td>

                    </tr>

                  %endfor

                </table>

              </div>

              %endif

              <div class="msg-div">${c.update_msg_other}</div>

            </div>

              <div class="buttons">

                ${h.submit('copy_update',_('Create pull request update'),class_="btn btn-small")}

              </div>

            %endif

          </div>

        ${h.end_form()}

      </div>

    </div>

    ## REVIEWERS

    <div style="float:left; border-left:1px dashed #eee">

       <div class="pr-details-title">${_('Pull request reviewers')}</div>

        <div id="reviewers" style="padding:0px 0px 5px 10px">

          ## members goes here !

          <div>

            <ul id="review_members" class="group_members">

            %for member,status in c.pull_request_reviewers:

              <li id="reviewer_${member.user_id}">

                <div class="reviewers_member">

                    <div class="reviewer_status tooltip" title="${h.tooltip(h.changeset_status_lbl(status.status if status else 'not_reviewed'))}">

                      <img src="${h.url(str('/images/icons/flag_status_%s.png' % (status.status if status else 'not_reviewed')))}"/>

                    </div>

                  <div class="reviewer_gravatar gravatar"><img alt="gravatar" src="${h.gravatar_url(member.email,14)}"/> </div>

                  <div style="float:left;">${member.full_name} (${_('owner') if c.pull_request.user_id == member.user_id else _('reviewer')})</div>