openproject/app/views/projects/form/attributes/_identifier.html.erb

<%#-- copyright
OpenProject is a project management system.
Copyright (C) 2012-2017 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 doc/COPYRIGHT.rdoc for more details.

++#%>

<%
  project = form.object
  id = project.identifier
  id_max_length = Project::IDENTIFIER_MAX_LENGTH
  identifier_editable = project.new_record?
%>

<div class="form--field <%= identifier_editable ? '-required' : '' %>">
  <% if identifier_editable %>
    <%= form.text_field :identifier, container_class: '-middle'%>

    <script type="text/javascript" charset="utf-8">
      projectIdentifierMaxLength = <%= id_max_length %>;
      projectIdentifierDefault = '<%= id %>';
      projectIdentifierLocked = false;
      observeProjectIdentifier();
      observeProjectName();
    </script>

    <div class="form--field-instructions">
      <%= l(:text_length_between, min: 1,
                                  max: Project::IDENTIFIER_MAX_LENGTH) %>
      <%= l(:text_project_identifier_info).html_safe %>
    </div>
  <% else %>
    <label class="form--label" title="<%= Project.human_attribute_name(:identifier) %>">
      <%= Project.human_attribute_name(:identifier) %>
    </label>
    <span class="form--field-container">
      <span id="identifier">
        <%= project.identifier %>
      </span>
      <%= link_to identifier_project_path, title: l(:button_edit), class: "icon" do %>
        <%= op_icon('icon icon-edit') %>
        <span class="hidden-for-sighted">
          <%= l(:button_edit) %>
        </span>
      <% end %>
    </span>
  <% end %>
</div>