Question with Ajax?

k111 · September 27, 2010, 10:00pm

i am testing <Sending GET/POST request with dhtmlxAjax> code.
So at test1.php :

Parameters: GET POST Use Synchronous Mode

and at test.php:

<?php if ($_POST[params]=="") echo "NO_POST "; else echo "YES_POST "; if ($_GET[params]=="") echo "NO_GET "; else echo "YES_GET "; ?>

[b]The problem is that the test.php’s output is
NO_POST
NO_GET

which means that “params” is not posted and that params value doesn’t pass to URLto GET it from the test.php page.
Also with ie8 the output is:

Request Sent1
We Got Response\n\n

but with mozilla :

Request Sent1
Response contains no XML

Can anyone help me with test.php and with browsers?[/b]

julian · January 7, 2011, 12:16pm

I think we have the same problem. When I send a request using the ajax object in firefox, I have no responseXML. With IE everything works fine.

Using firebug I can see that the request sent by the ajax object is an OPTIONS request instead of a GET request.

Can someone of the dhtmlx staff explain us where is the problem.

Alexandra · January 10, 2011, 3:28pm

Using firebug I can see that the request sent by the ajax object is an OPTIONS request instead of a GET request.

Can you provide a sample to recreate the problem

ajaxian · January 10, 2011, 11:39pm

Alexandra, I’m getting the results with Chrome that Julian is getting with Firefox.

The message from outputResponse() when run under Chrome says the loader.xmlDoc.responseXML object is null. IE, however, is showing that the loader.xmlDoc.responseXML object is not null.

My code is very similar to that of k…, except that I’m calling a known-good web service within my domain.

Is there an explanation, please? Thank you.

Alexandra · January 11, 2011, 10:22am

Hello,

here is the working sample:
dhtmlxAjax/samples/01_samples_of_usage/01_send_request.html

Please provide the complete demo.

ajaxian · January 11, 2011, 6:02pm

Alexandra, the code below that I’ve been testing has been very closely based on the sample. It returns a SOAP response body using IE, but nothing in Chrome. Thanks in advance for any help you might offer.

[code]

DHTMLX Ajax test

Parameters: GET POST Use Synchronous Mode

[/code]

Alexandra · January 12, 2011, 1:11pm

Make sure that there is not a whitespace before <?xml declaraton (the declaration must be the first text in the output).

ajaxian · January 12, 2011, 4:33pm

Thank you for your reply, Alexandra. No, there is no initial whitespace in the response body. I’ve tried my code with a couple of different known-good web services, written by different companies, and have gotten the same results - a response body comes back using IE, but none using Chrome.

Kindly advise, please? Thank you.

julian · January 13, 2011, 9:33am

Alexandra, the next function worfs fine in IE. We use it to load the name of provinces of Spain in an array.

‘Provincias’ is a global variable in our app.

[code]function cargaProvincias() {

var ABC = 'abcdefghijklmnñopqrstuvwxyz';
var url;
var params;

for(var i=0;i<ABC.length;i++) {
	url = "http://www.cartociudad.es/wfs-provincia/services?";
	params = "SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&";
	params = params + "NAMESPACE=xmlns(app=http://www.deegree.org/app)&";
	params = params + "TYPENAME=app:Entidad&"
	params = params + "FILTER=<Filter><PropertyIsLike wildCard='*' singleChar='_' escapeChar='|'><PropertyName>nombreEntidad/nombre</PropertyName><Literal>";
	params = params + ABC.charAt(i) + "*";
	params = params + "</Literal></PropertyIsLike></Filter>";

	var loader = dhtmlxAjax.getSync(url + params);
				
	if (loader.xmlDoc.responseXML != null) {
		var nResults = loader.doXPath("/ResultCollection/gml:featureMember").length;
			if(nResults != 0){
				for(var j=0; j<nResults; j++){
					var name = loader.doXPath("/ResultCollection/gml:featureMember[" + j +"]/Entidad/nombreEntidad/nombre");
				if(name.length != 0) provincias[provincias.length] = name.item(0).text;
			}
		}
	}
}

}
[/code]

Thanks in advance

Alexandra · January 13, 2011, 11:40am

Ajaxian,

could you provide an example of generated xml for testing?

Alexandra · January 13, 2011, 11:42am

Julian,

what is the problem you have faced ? It seems that you didn’t mentioned it…

ajaxian · January 13, 2011, 8:58pm

Greetings, Alexandra,

My apologies - I’m not sure I understand your request. Do you want a copy of the response body XML, please?

Thank you.

Alexandra · January 14, 2011, 1:24pm

Greetings,

pm_project.do generates some xml. Could you provide the example of problematic xml or link to the page.

julian · January 17, 2011, 10:42am

Alexandra the description of the problem is in the second reply.

"I think we have the same problem. When I send a request using the ajax object in firefox, I have no responseXML. With IE everything works fine.

Using firebug I can see that the request sent by the ajax object is an OPTIONS request instead of a GET request.

Can someone of the dhtmlx staff explain us where is the problem."

The next function worfs fine in IE. We use it to load the name of provinces of Spain in an array.

‘Provincias’ is a global variable in our app.

[code]function cargaProvincias() {

var ABC = ‘abcdefghijklmnñopqrstuvwxyz’;
var url;
var params;

for(var i=0;i<ABC.length;i++) {
url = "http://www.cartociudad.es/wfs-provincia/services?";
params = “SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&”;
params = params + “NAMESPACE=xmlns(app=http://www.deegree.org/app)&”;
params = params + “TYPENAME=app:Entidad&”
params = params + “FILTER=nombreEntidad/nombre”;
params = params + ABC.charAt(i) + “*”;
params = params + “”;

  var loader = dhtmlxAjax.getSync(url + params);
           
  if (loader.xmlDoc.responseXML != null) {
     var nResults = loader.doXPath("/ResultCollection/gml:featureMember").length;
        if(nResults != 0){
           for(var j=0; j<nResults; j++){
              var name = loader.doXPath("/ResultCollection/gml:featureMember[" + j +"]/Entidad/nombreEntidad/nombre");
           if(name.length != 0) provincias[provincias.length] = name.item(0).text;
        }
     }
  }

}
}[/code]

Alexandra · January 18, 2011, 1:46pm

Hello,

we need a complete demo - the sample that contains all necessary files and static xml.

julian · January 21, 2011, 8:12am

Alexandra I can’t give you the complete app. I’ve prepared a mini demo, it only needs the javascript file dhtmlxcommon.js. I’m using the copy of the file located at the codebase dir of the dhtmlAjax dir from the standard edition of the dhtmlxSuite 2.6.

I sent you a zip file with a mini demo.

Thanks for your efforts.
demo.zip (6.39 KB)

Alexandra · January 21, 2011, 12:40pm

Please see the post viewtopic.php?f=7&t=16720 possibly it’ll resolve the problem

julian · March 2, 2011, 8:35am

Alexandra the xml sent by the server is correct. I’m sure because I have sent the requests typing them like an URL in IE and Firefox, and both renders the xml well.

I think the problem is not in the xml sent by the server. I remind you the following:

When I send a request using the ajax object in firefox, I have no responseXML. With IE everything works fine.

Using firebug I can see that the request sent by the ajax object is an OPTIONS request instead of a GET request.

So, in my case, it seems that the Ajax Object send an OPTIONS request to the server instead of a GET request when Firefox is used.

Alexandra · March 2, 2011, 12:23pm

Could you provide a link to the problematic page ?

julian · March 4, 2011, 11:51am

For example:

http://www.cartociudad.es/wfs-provincia/services?SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&NAMESPACE=xmlns(app=http://www.deegree.org/app)&TYPENAME=app:Entidad&FILTER=<PropertyIsLike%20wildCard=’’%20singleChar=’_’%20escapeChar=’|’>nombreEntidad/nombrea