getting null value in client script

[jack33]

I am checking unique catalog item name in table sc_cat_item and always getting null

wrote onchange catalog client script on variable create_catalog_item and client callable SI

Here is the code

Client script:

function onChange(control, oldValue, newValue, isLoading) {
   if (isLoading || newValue == '') {
      return;
   }

  var cat_name = g_form.getValue('create_catalog_name');
	alert('cat_name'+cat_name);
var ga = new GlideAjax('UniqueCatalogName'); 
ga.addParam('sysparm_name','getName');
ga.addParam('sysparm_cat_name',cat_name);
ga.getXML(getCatName);
	
function getCatName(response) {
	var answer = response.responseXML.documentElement.getAttribute("answer");
	alert('answer'+answer); //getting null
    if(answer == 'true'){
		g_form.showErrorBox('create_catalog_name','This name is already available,please select other name');
		g_form.clearValue('create_catalog_name');
}}}

Script include:

var UniqueCatalogName = Class.create();
UniqueCatalogName.prototype = Object.extendsObject(AbstractAjaxProcessor, {

    getName: function(){

        var cat_name = this.getParameter('sysparm_cat_name');
        var trimed_name = cat_name.trim();
        var flag = false;
        gs.log('cat_name' + cat_name + ' trimed name' + trimed_name);
        var avil_name = new GlideRecord('sc_cat_item');
        avil_name.addEncodedQuery('name=' + cat_name + '^ORname=' + trimed_name);
        avil_name.query();

        if (avil_name.next()) {
            flag = true;
        } else {
            flag = false;
        }
        return flag;	
    },

    type: 'UniqueCatalogName'
});

[U_Viswa · Accepted solution]

Hi Jack,

issue with your scriptinclude function name "getName" change with something like "getNameOfCatalog".

This would fix your issue. Please let me know after trying.

Thanks

Viswa

[Brad Bowman]

Are you seeing the cat_name and trimed_name log from the SI?  With the cat_name you are using for testing, are you expecting a true value to be returned?  Change your flag values to strings so that a string value is returned to the Client Script.  And you don't need the else block since the value will already be false.

var flag = 'false';

...

flag = 'true';

[jack33]

Yes I am getting value of cat_name and trimed_name, I'm accepting true if catalog item name is already available and false if unique name entered in variable.

By changing flag value to string also it is not working  

[Brad Bowman]

If you log flag in the SI before the return to confirm the value returned to the client is 'true' or 'false' then your alert on answer is still null?

[U_Viswa · Accepted solution]

Hi Jack,

issue with your scriptinclude function name "getName" change with something like "getNameOfCatalog".

This would fix your issue. Please let me know after trying.

Thanks

Viswa