I'm working on a catalog client script where I need to perform a server-side validation during the onSubmit event. The use case is to restrict form submission if the user already has a device listed in the Asset table.
I'm using getXML() to make a GlideAjax call inside the onSubmit client script. The callback function checks the response and conditionally allows or blocks the submission using return false. The validation logic works fine when the condition is met.
However, when the condition fails (i.e., the user should be allowed to submit), the form seems to be submitted multiple times, causing looping behavior. I added an alert() in the else block to debug, and it keeps triggering repeatedly
catalog client script:
function onSubmit() {
var reason = g_form.getValue('reason_for_the_request');
var userType = g_form.getValue('request_type');
var deviceFor = g_form.getValue('requested_for');
if ((reason === 'transfer' || reason === 'additional') && userType === 'individual') {
var callScript = new GlideAjax('CheckDevice');
callScript.addParam('sysparm_name', 'getDevice');
callScript.addParam('sysparm_id', deviceFor);
callScript.getXML(ajaxResponse);
return false; // Prevent form submission until callback completes
}
return true; // Allow form submission if condition not met
}
function ajaxResponse(response) {
var userData = JSON.parse(response.responseXML.documentElement.getAttribute("answer"));
var userName = userData.userDetails;
var devicesCount = userData.devicesCount;
var deviceName = userData.deviceName;
var deviceSerial = userData.deviceSerial;
if (devicesCount !== 0) {
alert("The user " + userName + " already has " + deviceName + " with serial " + deviceSerial);
// return false;
} else {
// alert("Hi");
g_form.submit(); // Submit the form only if no device is assigned
}
}
