openproject/app/views/users/_preferences.html.erb

<%#-- copyright
OpenProject is a project management system.
Copyright (C) 2012-2018 the OpenProject Foundation (OPF)

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 3.

OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
Copyright (C) 2006-2017 Jean-Philippe Lang
Copyright (C) 2010-2013 the ChiliProject Team

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

See docs/COPYRIGHT.rdoc for more details.

++#%>
<%= fields_for :pref, @user.pref, builder: TabularFormBuilder, lang: current_language do |pref_fields| %>
  <%=
    cell(
      Settings::TimeZoneSettingCell,
      "time_zone",
      form: pref_fields,
      container_class: (defined? input_size) ? "-#{input_size}" : "-wide"
    )
  %>
  <div class="form--field">
    <%= pref_fields.select :comments_sorting,
                           [[t(:label_chronological_order), 'asc'],
                            [t(:label_reverse_chronological_order), 'desc']],
                           container_class: (defined? input_size) ? "-#{input_size}" : '' %>
  </div>
  <div class="form--field"><%= pref_fields.check_box :warn_on_leaving_unsaved %></div>
  <div class="form--field"><%= pref_fields.check_box :auto_hide_popups %></div>
<% end %>