Verify attachment count in service portal or native platform view

[chirag_bagdai]

Below script may help you to check how many attachments are uploaded in catalog item.

You can create new Catalog Client Script and make sure to set following fields:

• Isolate script: should be unchecked
• UI Type - All
• Script :

function onSubmit() {
    var attachmentCount = 0;
    var expectedAttachmentCount = 2;
    var errorMsg = 'Expected attachments are ' + expectedAttachmentCount;
    try {
        if (typeof parent.angular != 'undefined') { // portal
            var pageScope = parent.angular.element('[template="sp_attachment_single_line"]').scope();
            if (!pageScope) { //no attachments
                attachmentCount = 0;
            } else { // when attachments count is more > 0
                attachmentCount = pageScope.attachments.length;
            }
        } else { // native view
            attachmentCount = getCurrentAttachmentNumber();
        }
        if (attachmentCount < expectedAttachmentCount) {
            g_form.addErrorMessage(errorMsg);
            return false;
        }
    } catch (e) {
        console.error(e);
        g_form.addErrorMessage("Something went wrong. Please contact system administrator");
        return false;
    }
}

[nivea]

Hi @chirag.bagdai ,

I'm using your script to validate attachment count based on a variable input. It is working when attachment is not attached.

After attaching the attachment, attachmentCount is showing as 1 but I'm getting Javascript error in browser console while submitting the request.

PFB the script which I'm using to Validate attachments in Portal.

function onSubmit() {

    if (g_form.getValue('more_than_one_device_the_list_has_been_uploaded') == 'true') {

    var attachmentCount = 0;
    var expectedAttachmentCount = 1;
    var errorMsg = 'You must add an attachment before submitting this request as you have selected more than one device option';
    try {
        if (typeof parent.angular != 'undefined') { // portal
            
            var pageScope = parent.angular.element('[template="sp_attachment_single_line"]').scope();
            if (!pageScope) { //no attachments
                attachmentCount = 0;
                
            } else { // when attachments count is more > 0
                             attachmentCount = pageScope.attachments.length;
            }
        } 
        if (attachmentCount < expectedAttachmentCount) {
            alert('inside attachment portal script - if loop validation');
            alert(errorMsg);
            return false;
        }
    } 
        catch (e) {
      console.error(e);
        alert("Something went wrong. Please contact system administrator"); 
        return false;
    }
}
}

Can you please help me to understand why I'm getting Javascript error in your browser console error ?

Thanks,

Nivea.

[Jim Coyne]

Thanks for the tip, but I'm curious: where is "getCurrentAttachmentNumber" defined?  I searched for it but could not find it.  Definitely not a documented call, which is risky.

[chirag_bagdai]

@Jim Coyne  - You are right getCurrentAttachmentNumber is not a documented API hence there is a risk of using non published API. 

[Jim Coyne]

That's too bad.  Maybe you have some power to get it documented and supported?  🙂

[chirag_bagdai]

Unfortunately, I haven't reached that level yet 🙂

You can submit product enhancement request - https://www.servicenow.com/community/itom-articles/have-you-visited-our-ideas-portal-use-this-to-pro... 

I completely understand that relying on DOM is risky but I am really not sure if there are any published API available.

[Jim Coyne]

Done.

https://support.servicenow.com/ideas?id=view_idea&sysparm_idea_id=94b9224097694a10f03d739c1253afff&s...

[rogie_mar]

Tried this but 'pageScope' is undefined

[Peter Williams]

This was very helpful but question when you have a variable for attachment it doesnt seem that it detects if it has an attachment

i have this variable in an MRV.

how can you modified this for this case