Scripting Help

[pramn]

Requirement :2 new fields: Affected CIs & Impacted Services on the change_request table. These new fields will be integer field types that are populated with the number of Affected CIs and Impacted Services shown in the related list. THese fields need to be populated by a business rule that checks those related lists and inputs the number associated to the change. When one or more of these Affected CIs are removed or added, the business rule should recalculate the value in these new fields.

Can someone please help me with the Business rule or Script include  for populating those filed auto?

I have created the fields however I am stuck with coding Part .

Thanks for your help

[Ankur Bawiskar]

@pramn 

so what did you start with and where are you stuck?

this is an easy requirement

You can have after insert BR on task_ci and task_cmdb_ci_service and use below condition in both the BRs

BR Condition: current.task.sys_class_name == 'change_request' && current.task != ''

(function executeRule(current, previous /* null when async */) {

    var changeSysId = '';

    if (current.task)
        changeSysId = current.getValue('task');

    if (previous && previous.task && !changeSysId)
        changeSysId = previous.getValue('task');

    if (!changeSysId)
        return;

    var chg = new GlideRecord('change_request');
    if (!chg.get(changeSysId))
        return;

    new ChangeCountUtil().updateAffectedCICount(changeSysId);

})(current, previous);

Then have common reusable script include like this

var ChangeCountUtil = Class.create();
ChangeCountUtil.prototype = {
    initialize: function() {},

    updateAffectedCICount: function(changeSysId) {
        if (!changeSysId)
            return;

        var count = 0;
        var agg = new GlideAggregate('task_ci');
        agg.addQuery('task', changeSysId);
        agg.addAggregate('COUNT');
        agg.query();
        if (agg.next())
            count = parseInt(agg.getAggregate('COUNT'), 10) || 0;

        var chg = new GlideRecord('change_request');
        if (chg.get(changeSysId)) {
            chg.setValue('u_affected_ci_count', count);
            chg.setWorkflow(false);
            chg.autoSysFields(false);
            chg.update();
        }
    },

    updateImpactedServiceCount: function(changeSysId) {
        if (!changeSysId)
            return;

        var count = 0;

        // Adjust this table/query if your impacted services are stored elsewhere
        var agg = new GlideAggregate('task_cmdb_ci_service');
        agg.addQuery('task', changeSysId); // verify field name in your instance
        agg.addAggregate('COUNT');
        agg.query();
        if (agg.next())
            count = parseInt(agg.getAggregate('COUNT'), 10) || 0;

        var chg = new GlideRecord('change_request');
        if (chg.get(changeSysId)) {
            chg.setValue('u_impacted_service_count', count);
            chg.setWorkflow(false);
            chg.autoSysFields(false);
            chg.update();
        }
    },

    type: 'ChangeCountUtil'
};

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