openproject/app/views/work_packages/_history.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.

++#%>

<%# Uses a cache to render the history. The placeing of this object
is somewhat arbitrary. The important point is that it is not instantiated within
a journal as the cache could then not be used between all of an issue's journals. %>

<% @journal_cache = Acts::Journalized::JournalObjectCache.new %>

<% for journal in journals %>
  <%= render_journal work_package,
                     journal,
                     edit_permission: :edit_work_package_notes,
                     quote_permission: :edit_work_packages,
                     edit_own_permission: :edit_own_work_package_notes,
                     cache: @journal_cache %>
  <%= call_hook(:view_work_packages_history_journal_bottom, { journal: journal }) %>
<% end %>

<% heads_for_wiki_formatter if User.current.allowed_to?(:edit_work_package_notes, work_package.project) || User.current.allowed_to?(:edit_own_work_package_notes, work_package.project) %>