Difficulty in using CartJS in Business Rule

[Terence N]

Hi,

I am trying to submit a catalog item request through a business rule. I came across the CartJS documentation and followed the sample code there. However, when using cart.addToCart() or the other submission calls, I got the following error:

Root cause of JavaScriptException: java.lang.ClassCastException 
: java.lang.ClassCastException: class org.json.simple.JSONObject cannot be cast to class java.lang.String (org.json.simple.JSONObject is in unnamed module of loader com.snc.orbit.container.tomcat8.ParallelOrbitTomcat8ClassLoader @29fe1f17; java.lang.String is in module java.base of loader 'bootstrap'):  com.glideapp.servicecatalog.CatalogUtil.jsonToMap(CatalogUtil.java:619)
 

Below is my code:

const cart = new sn_sc.CartJS(gs.generateGUID());
const request = {
	sysparm_id: routineCreationCatalogItem.sys_id,
	sysparm_quantity: '1',
	variables:{
		routine_name: `Daily Routine - ${businessApp.name}`,
		activity: dailyActivity.sys_id,
		business_application: businessApp.sys_id
	}
};

cart.addToCart(request);​

In the example code provided in the documentation, there was no need to do JSON.stringify() on the request. This is the first issue.

Subsequently I tried using JSON.stringify() on the request and there was no error thrown anymore. However, nothing was returned and I am not able to log out the cart details so I cannot do any troubleshooting.

Is anyone facing the same issues as me? 

[Ankur Bawiskar]

@Terence N 

try this

// 1) Instantiate CartJS (no GUID needed in most recent docs)
var cart = new sn_sc.CartJS();

// 2) Build the item payload as a JS object
var itemOrderDetails = {
    sysparm_id: routineCreationCatalogItem.sys_id,   // catalog item sys_id
    sysparm_quantity: '1',
    variables: {
        routine_name: 'Daily Routine - ' + businessApp.name,
        activity: dailyActivity.sys_id,
        business_application: businessApp.sys_id
    }
};

// 3) Convert to JSON string before passing to addToCart
var itemJson = JSON.stringify(itemOrderDetails);

// 4) Add to cart
var addToCartResult = cart.addToCart(itemJson);

// Optional: log result for troubleshooting
gs.info('addToCart result: ' + JSON.stringify(addToCartResult));

// 5) Checkout
var checkoutResult = cart.checkoutCart();

gs.info('checkoutCart result: ' + JSON.stringify(checkoutResult));

// 6) Use the result
if (checkoutResult && checkoutResult.request_number) {
    gs.info('Order submitted. Request: ' + checkoutResult.request_number);
    // If you need sys_id, you may need to query sc_request by number
} else {
    gs.error('Failed to submit order: ' + JSON.stringify(checkoutResult));
}

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