Filter Catalog Item variable (Reference on Knowledge article) with Can Contribute ?

[Guillaume D]

Hi,

I have a catalog Item that return a list of Knowledge article from a particular Knowledge base in a Reference variable.

Current configuration :

Current configuration

OOB, the list will show the articles the user can READ.

Instead, we want to only show the articles the user can Contribute (edit).

I changed the Reference qualifier to "Advanced" and tried a few thing without success.

• I tried to call the "canWrite"' function from "KBKnowledge" script include directly into the qualifier.
• I tried to encapsule the same "canWrite"' function in an client callable script include where I try do a glide record and return a list of KB sys_id.

Every time my list is empty. (But not sure I implemented previous solutions correctly)

Would you have some suggestion ?

Thank you !

[Daniel Arnold · Accepted solution]

I haven't tried it myself but this is probably the approach you need to use in order to engage some more powerful server side logic in your reference qualifier by using a script include.

https://www.servicenow.com/community/developer-forum/need-a-canwrite-reference-qualifier/m-p/2116327

[Guillaume D]

Hi Daniel,

Thank you for your suggestion.

I had try this approach without success, but with your link I was able to identify issue within my script include !

Short answer :

It works now, so I'll accept your message as solution !

Long answer :

The knowledge base I'm looking at contain more than 20k articles, so evaluating each article for canWrite permission is not efficient and not a viable solution for my need. (long loading time every time I'm looking at the list)
But for someone wanting to evaluate a smaller table it could totally work.

Here is the code I used, so other people can adjust it to their need.

Script include :

var myScriptInclude = Class.create();
myScriptInclude.prototype = Object.extendsObject(AbstractAjaxProcessor, {
 
        getCanWriteArticle: function() {
        var result = 'sys_idIN';
        var kb = new GlideRecord("kb_knowledge");
        kb.addEncodedQuery('kb_knowledge_base=************^language=en^workflow_state=published');
        kb.query();

        while (kb.next()) {
            if (kb.canWrite()) {
                result = result + kb.sys_id + ',';
            }
        }
        return result;
    },

    type: 'myScriptInclude'
});

Reference Qualifier :

javascript:new myScriptInclude().getCanWriteArticle()

EDIT : For reference qualifier : ":" -> ":"

I don't know with it's interpretated in the code sample