Check Portal Cart before check out with OnSubmit client script

[aneta_koleva]

I am having the following requirement: to have a portal with attached service catalog. I need to do prevalidate on the cart to check if the current user is having enough amount of money for the ordered cart total price.

I was planning to create an onSubmit client script for the sc_cart using GlideAjax in order to check the cart items and their price.

But it wasn't working.

I have read that client scripts are not working with portals and indeed I have added an onLoad client script on sc_cart table but nothing is happening on the portal but only on the table itself in a particular record: 

Portal: 

what can be done in my case? any ideas are welcome.

[aneta_koleva · Accepted solution]

I have cloned the Shopping cart page's widget 'SC Shopping cart' (sc-shopping-cart-v2)

and done the behavior there.

[kack l]

I didn't find it in my Instance(sc-shopping-cart-v2)
Is there any way to find it.

[aneta_koleva]

Here is the path: 

Or via the portal configuration: 

Choose Widget editor and then:

[kack l]

Thanks for your answer. Can it be used in this place on the picture(sc-shopping-cart-v2)

catalog item ----Request method ----Request----cart