How to add {{parameter}} in the iron-ajax 'url' property?

[Christian Tzolov]

The core-ajax element allows binding parameters in the url property: 

<core-ajax url="{{hostname}}/hawq-api/v1/version" handleAs="json" response="{{resp}}"></core-ajax>

In iron-ajax this is not possible anymore. It seems that iron-ajax's url expect a static string. Is there a new way to compose dynamic urls in iron-ajax?

Thanks

[jim.j...@gmail.com]

You need to use either a computed property or a computed binding.

https://www.polymer-project.org/0.9/docs/devguide/properties.html#computed-properties

https://www.polymer-project.org/0.9/docs/devguide/properties.html#annotated-computed

[Chuck Horton]

<iron-ajax id="get_file"
      handle-as="text"
      last-response="{{fileContent}}"
      headers='{"accept": "application/vnd.github.VERSION.html"}'
      on-response="handleFile"
      on-error="handleFileErrorResponse">
</iron-ajax>

ready: function() {

     this.$.get_file.url = "https://api.github.com/repos/" + this.owner + "/" + this.repo + "/contents/" + this.fileName + "?ref=" + this.branch + "&access_token=" + this.tk;

     this.$.get_file.generateRequest();

},

This works for m.