Tornadao—模板语法（自定义函数）

• 自定义函数

  ---

  def house_title_join(titles):
   return "+".join(titles)
  class IndexHandler(RequestHandler):
   def get(self):
   house_list = [
   {
   "price": 398,
   "titles": ["宽窄巷⼦", "160平⼤空间", "⽂化保护区双地铁"],
   "score": 5,
   "comments": 6,
   "position": "北京市丰台区六⾥桥地铁"
   },
   {
   "price": 398,
   "titles": ["宽窄巷⼦", "160平⼤空间", "⽂化保护区双地铁"],
   "score": 5,
   "comments": 6,
   "position": "北京市丰台区六⾥桥地铁"
  
  现在，我们对模板index.html进⾏抽象，抽离出⽗模板base.html如下：
   }]
   self.render("index.html", houses=house_list, title_join =
  house_title_join)

  ---

  <ul class="house-list">
   {% if len(houses) > 0 %}
   {% for house in houses %}
   <li class="house-item">
   <a href=""><img src="/static/images/home01.jpg"></a>
   <div class="house-desc">
   <div class="landlord-pic"><img
  src="/static/images/landlord01.jpg"></div>
   <div class="house-price">￥<span>{{house["price"]}}
  </span>/晚</div>
   <div class="house-intro">
   <span class="house-title">
  {{title_join(house["titles"])}}</span>
   <em>整套出租 - {{house["score"]}}
  分/{{house["comments"]}}点评 - {{house["position"]}}</em>
   </div>
   </div>
   </li>
   {% end %}
   {% else %}
   对不起，暂时没有房源。
   {% end %}
  </ul>