聚合物。 如何重新加载Iron-ajax“页面显示”事件？

Question

can you tell me how can i reload an iron-ajax when i opened a page. For example: I have page /news. When i clicked for this page i am opened element:

<dom-module id="my-news">
  <template id="app">
    <iron-ajax id="ajax_list"
            auto
            url="http://--------------/books"
            last-response="{{data}}"
            handleAs="json"
            on-response="handleResponse">
    </iron-ajax>
                    <iron-list id="news_list" items="[[data]]">
                          <template >
                            <paper-item  on-tap="open_news">[[item.name]]          </paper-item>
                          </template>
                    </iron-list>

  </template>
<script>
Polymer({
        is: 'my-news',
       }, 
....
</script>

If at this point to add news, the list is not updated. It is updated only when I press F5 and iron-ajax will work again. I am create a function like this:

ready: function(){
    var _this_ = this;
    function(){this.ajax_list.generateRequest();}, 5000)
 }

But this is not exit

Answer 1

In order to work, your function need to get the iron-ajax instance, and for that you need to use this.$ instead of this . You also need to bind the function with bind(this) in order to pass the element instance to the callback.

Something like that:

ready: function(){ var _this_ = this; function(){ this.$.ajax_list.generateRequest() }.bind(this), 5000) },