app/views/tasks/_add_friend_accept_details.html.erb
<%= text_field_with_local_autocomplete("tasks[#{task.id}][task][group_for_friend]",
task.target.suggested_friend_groups,
{ :id => "field-group-for-friend-#{task.id}",
:maxlength => 150,
:placeholder => _('Classify your new friend')
}).html_safe
%>
<p class="friend-classify-suggestions">
<%=_('Suggestions: %s') % task.target.suggested_friend_groups.join(', ') %>
</p>