Hi All,

Hope you all are doing great.

In this tutorial we will be looking into an API to add worknotes to the change request.

Work notes Rest Resource

(function process(/*RESTAPIRequest*/ request, /*RESTAPIResponse*/ response) {
    // implement resource here
    return new SRChangeManagementAPI(request, response).addWorkNotes();
})(request, response);

SRChangeManagementAPI

var SRChangeManagementAPI = Class.create();
SRChangeManagementAPI.prototype = /** @lends x_swre_chg_api.module:sys_script_include.SRChangeManagementAPI.prototype */ { /** * Initialisation of request and response * * @Param {any} request * @Param {any} response * @returns {undefined} */ initialize: function(request, response) { var self = this; self.request = request; self.response = response; self.body = null; try { // support for POST request var requestBody = request.body; if (requestBody && requestBody.hasNext()) { var body = requestBody.nextEntry(); if (body) { self.body = body; } } } catch (ignore) { // ignore } }, /** * Add the worknotes to Change Request * mapped to POST /api/x_swre_chg_api/changes/{id}/worknotes * * @returns {any} */ addWorkNotes: function() { var self = this; var changeId = self.getPathParam('id', ''); if (gs.nil(changeId)) { return sn_ws_err.BadRequestError('id not provided in the path'); } if (!self.body.hasOwnProperty('work_notes')) { return sn_ws_err.BadRequestError('Invalid request body: work_notes not provided'); } var workNotePrefix = (function(self) { if (!self.body.hasOwnProperty('user_id')) { return ''; } return gs.getMessage('User: {0} added work note:\n', [self.body.user_id]); })(self); var qry = (function() { return gs.getMessage('active=true^number={0}^ORsys_id={0}', changeId); })(); var grChange = new GlideRecord('change_request'); grChange.addEncodedQuery(qry); grChange.query(); if (grChange.next()) { grChange.work_notes = workNotePrefix + self.body.work_notes; grChange.update(); var err = grChange.getLastErrorMessage(); if (!gs.nil(err)) { return self.getInternalServerError('Operation failed', err); } } else { return sn_ws_err.NotFoundError('Could not find an active Change request with id: ' + changeId); } return self.getChangeRequestResponse(grChange.getValue('sys_id')); }, /** * Get path parameter * * @Param {String} paramName * @Param {String|Boolean|Integer} defaultValue * @returns {ConditionalExpression} */ getPathParam: function(paramName, defaultValue) { var self = this; return (paramName in self.request.pathParams) ? self.request.pathParams[paramName] : defaultValue; }, /** * Custom error message * * @Param {String} detail * @Param {String} message * @returns {Object} myError */ getInternalServerError: function(detail, message) { var myError = new sn_ws_err.ServiceError(); myError.setStatus(500); myError.setDetail(detail); myError.setMessage(message); return myError; }, /** * To derive the response object * * @Param {any} changeSysId
     * @returns {any} out
     */
    getChangeRequestResponse: function(changeSysId) {
        var self = this;
        var out = {};

        var fields = self.getQueryParam('sysparm_fields', gs.getProperty('x_swre_chg_api.change-request.response-fields', ''));
        fields = (fields) ? fields.split(',') : [];

        var displayValue = self.getQueryParam('sysparm_display_value', 'false');

        self.response.setContentType('application/json');
        self.response.setStatus(200);

        var changeRequest = new GlideRecord('change_request');
        changeRequest.addQuery('sys_id', changeSysId);
        changeRequest.query();
        if (changeRequest.next()) {

            fields.forEach(function(fieldName) {
                fieldName = fieldName.trim();

                if (!changeRequest.isValidField(fieldName.split('.')[0]))
                    return;

                var element = changeRequest.getElement(fieldName);
                var ed = element.getED(),
                    value = element.toString();
                /*
                    .nil() is also true if a filed has length 0 !!
                    if (element.nil()) {
                        value = null;
                    } else
                    */

                /*
                    if (ed.isBoolean()) {
                        value = JSUtil.toBoolean(element.toString());
                    } else if (ed.isTrulyNumber()) {
                        value = parseInt(element.toString(), 10);
                    } else {
                        value = element.toString();
                    }*/

                if ('all' == displayValue.toLowerCase()) {
                    out[fieldName] = {
                        display_value: element.getDisplayValue(),
                        value: value
                    };
                } else if ('true' == displayValue.toLowerCase()) {
                    out[fieldName] = element.getDisplayValue();
                } else {
                    out[fieldName] = value;
                }
            });
        }

        return out;

    },

type: 'SRChangeManagementAPI'
};

Request

HTTP Method / URI
POST https://swissreesmdev.service-now.com/api/x_swre_chg_api/v1/changes/CHG0703751/worknotes
Headers
Acceptapplication/json
Content-Typeapplication/json
X-UserToken4021337047eb555881b5eaf6e26d4397fe16b1e6e03fa63cab5183786c37a12dc643e117
Request Body
{"work_notes":"Test","user_id":"admin"}

Response

Status code
200 OK

Response Body

{
  "result": {
    "active": "true",
    "assigned_to": "",
    "assignment_group": "03cee018db25145026f8fd051d961979",
    "backout_plan": "",
    "category": "Direct Data",
    "cmdb_ci": "4654d5ee3df1304489bc9f405be032ef",
    "description": "",
    "implementation_plan": "",
    "justification": "",
    "number": "CHG0703751",
    "opened_at": "2022-12-01 13:01:15",
    "opened_by": "a0e11bb23ba32300b200655593efc491",
    "start_date": "",
    "end_date": "",
    "priority": "4",
    "requested_by": "98f3fb20f38a44f3a3b3f38449983dca",
    "risk": "4",
    "risk_impact_analysis": "",
    "short_description": "Azure DevOps Release",
    "test_plan": "",
    "u_environment": "any _change_controlled_pre_prod",
    "sys_created_by": "devops.system",
    "sys_created_on": "2022-12-01 13:01:15",
    "sys_id": "c4d9727c47e7155881b5eaf6e26d4390",
    "sys_updated_by": "S4AXNZ",
    "sys_updated_on": "2022-12-01 17:22:32",
    "watch_list": "",
    "u_testing_outcome": "successful",
    "state": "-5",
    "approval": "not requested"
  }
}

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Regards,

Amit Gujarathi

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