添加成员
<%= form_tag url_for(:controller => 'contest_members', :action => 'create', :contest => @contest.id),:id => 'contest_member_add_form', :remote => true do |f|%>
<%= find_user_not_in_current_contest_by_name(@contest) %>
取消 保存 <% end %>
<%= render :partial => 'contests/contest_member' %>