Polymer attributes and variable mapping

Question

I have a polymer element looking like this: <polymer-element name="foo" attributes="bar"> <template> <core-ajax url="url.php" params="{{ {last: bar} }}"></core-ajax> {{bar}} </template> </polymer-element> Though, when I create element, the attribute shows up on the page, but the ajax request is like url.php?last so it seems that variable is undefined. Also, this.bar returns undefined. How can I solve that?

Answer 1

请记住，核心-ajax在聚合物1.0中被弃用为铁-ajax。

无论如何，是否正确解决了params绑定？

基于documentation for new iron-ajax element，sintax应该是：

  

params =＆＃39; {＆＃34; alt＆＃34;：＆＃34; json＆＃34;，＆＃34; q＆＃34;：＆＃34; chrome＆＃34;}＆＃39;