openproject/app/views/work_package_relations/_form.html.erb

<%#-- copyright
OpenProject is a project management system.
Copyright (C) 2012-2015 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) 2006-2013 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.

++#%>

<%= error_messages_for 'relation' %>

<div class="grid-block">
  <div class="grid-content small-6">
    <span class="inline-label">
      <%= f.select :relation_type, collection_for_relation_type_select, {},
            :onchange => "setPredecessorFieldsVisibility();",
            class: 'form--select' %>
      <span class="form-label"><%= WorkPackage.model_name.human %> #</span>
      <%= f.text_field :to_id, :size => 10, class: 'form--text-field'%>
    </span>
    <span id="predecessor_fields" class="inline-label" style="display:none;">
      <span class="form-label"><%= Relation.human_attribute_name(:delay) %>:</span>
      <%= f.text_field :delay, :size => 3, class: 'form--text-field' %>
      <span class="form-label"><%= l(:label_day_plural) %></span>
    </span>
    <%= submit_tag l(:button_add), class: 'button -highlight' %>
    <%= toggle_link l(:button_cancel), 'new-relation-form', {}, class: 'button' %>
  </div>
</div>

<div id="related_issue_candidates" class="autocomplete"></div>
<%= javascript_tag "observeRelatedIssueField('#{work_packages_auto_complete_path(:id => controller.work_package, :project_id => @project, :escape => false) }')" %>
<%= javascript_tag "setPredecessorFieldsVisibility();" %>