<% if project.present? && project.versions.any? %>
<% download = DownloadButton.find_by_project_id(project.id) %>
<% unless download && download.disabled? %>
<% if controller.class.name == 'ProjectsController' ||
controller.class.name == 'ActivitiesController' ||
controller.class.name == 'WikiController' %>
<%= download_button(project, download) %>
<% elsif controller.class.name == 'VersionsController' %>
<% if params[:action] && params[:action] == 'show' %>
<% if version = Version.find_by_id(params[:id]) %>
<% end %>
<% else %>
<%= download_button(project, download) %>
<% end %>
<% end %>
<% end %>
<% end %>