Pre-Validation for Hardware Availability in Catalog Requests

Client-Side Components/Catalog Client Script/Onsubmit validation/on submit scriptinclude.JS

@@ -0,0 +1,25 @@
+var HardwareValidationUtils = Class.create();
+HardwareValidationUtils.prototype = Object.extendsObject(AbstractAjaxProcessor, {
+
+    validateHardware: function() {
+        var hardware = this.getParameter('sysparm_hardware');
+        var qty = parseInt(this.getParameter('sysparm_quantity'), 10);
+
+        if (!hardware || isNaN(qty)) {
+            return 'Invalid input!';
+        }
+
+        var gr = new GlideRecord('u_hardware_inventory');
+        if (gr.get(hardware)) {
+            var availableQty = parseInt(gr.getValue('available_quantity'), 10);
+            if (availableQty >= qty) {
+                return 'OK';
+            } else {
+                return 'Not enough stock available!';
+            }
+        }
+        return 'Hardware not found!';
+    },
+
+    type: 'HardwareValidationUtils'
+});

Client-Side Components/Catalog Client Script/Onsubmit validation/submit validation client script

@@ -0,0 +1,29 @@
+function onSubmit() {
+
+
+    var hardware = g_form.getValue('hardware_name');
+    var qty = g_form.getValue('quantity');
+
+
+    var ga = new GlideAjax('HardwareValidationUtils');
+    ga.addParam('sysparm_name', 'validateHardware');
+    ga.addParam('sysparm_hardware', hardware);
+    ga.addParam('sysparm_quantity', qty);
+
+
+    ga.getXMLAnswer(function(response) {
+
+
+        if (response !== 'OK') {
+            alert(response);
+
+            g_form.addErrorMessage(response); // Optional inline error
+            g_form.setSubmit(false); // Prevent submission in Service Portal
+        } else {
+
+            g_form.setSubmit(true); // Allow submission
+        }
+    });
+
+    return false; 
+}