Ruby 对日期和content text 格式化的 helper

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<% @news.each do |new| %>    <div class=<%=cycle('news_list_odd_tl', 'news_list_even_tl')%>>           <a href="/news/<%= new.id%>"><%= new.title %></a>           <div name="code">module ApplicationHelper  def format_time(time)    time.strftime("%Y-%m-%d %H:%M")  end  def summary(text)     #truncate(text.gsub(/<\/?[^>]*>/, ""), 100)     text.gsub(/(<\/?[^>]*>)|(&\w*;)/, "")  endend