How to make an externalinterface call to a JavaScript file which calls a server to get informtion

Question

I have a javascript file which has a function calling a server (url) to get information. Here is the javascript function:

sendQuery = function(devstr) {

    var baseUrl = 'http://serverurl/' + devstr;

    alert("the url is " + baseUrl);

    $.ajax(baseUrl, {
       type: 'GET',
       dataType: 'json'
    }).done(function(results){
       return results;
    }).fail(function(e) {
       showError(e);
    });
}

and from actionscript I am calling this function as follows:

var result:String = ExternalInterface.call("sendQuery", parameter) as String;

The call actually happens (I got an alert from javascript with the right url) but then result is simply empty or null. There is no result coming back. I added an alert to "done" in javascript and that alert does not get called.

I tried to use ExternalInterface.addcallback but I can't pass parameters and I am not entirely sure if that will work either.

I am not entirely sure to make the call from Actionscript to the Javascript file, which calls the server, and then get the information back to actionscript so I can parse it and do more with it.

I also should note that some of the operations I will be performing require POST operations. The reason I didn't do this through actionscript is because it requires having a crossdomain.xml file on the server I am requesting this information from.

Thanks in advance for the help.

Answer 1

What you are trying to do, can be done without Javascript in pure ActionScript3.0 by URLLoader class:

 var baseUrl:String = 'http://serverurl/'+parameter;
 var request:URLRequest = new URLRequest(baseUrl);
 request.contentType = 'application/json';
 request.method = URLRequestMethod.GET;    //For 'POST' request-> URLRequestMethod.POST
 var urlLoader:URLLoader = new URLLoader();
 urlLoader.addEventListener(Event.COMPLETE, function(e:Event):void{
     var result:* = e.target.data;
 });
 urlLoader.load(request);