How to call an AJAX Script Include from a Business Rule

[leslie8]

I have a client script that uses AJAX to call a script include to do a validation check. This is working from the Client script. I want to re-use this code to also run the same validations from a Business Rule. How would I structure the call from the Business Rule? How are the parameters supposed to be passed in to the script include from the Business Rule? Or do I need to create a new version of the script include that is designed to take in parameters between parenthesis in the function call block as this example?

1. var checkStart = new NewDateTimeUtils();  
2. NewTimeUtils.validateCalendarDate(start_date);  

Client Script

       var start = g_form.getValue('start_date');
       var checkStartFormat = checkDateFormat(start);
                         if (checkStartFormat != 'true') {
                                   g_form.showFieldMsg('start_date', checkStartFormat,'error');
                                   return false;
                                   }

       function checkDateFormat(dateVal) { 
               var ajaxCalendarDate = new GlideAjax('ClientDateTimeUtils'); 
               ajaxCalendarDate.addParam('sysparm_name', 'validateCalendarDate'); 
               ajaxCalendarDate.addParam('sysparm_userDate', dateVal); 
               ajaxCalendarDate.getXMLWait();
   return ajaxCalendarDate.getAnswer(); 
   }

Script Include

var ClientDateTimeUtils = Class.create(); 
ClientDateTimeUtils.prototype = Object.extendsObject(AbstractAjaxProcessor, {

validateCalendarDate: function(){
//Client date
var userDate = this.getParameter('sysparm_userDate');
//Check date format will match one of the available system dates
   var ymdDash = /^\d{4}[\-](0?[1-9]|1[012])[\-](0?[1-9]|[12][0-9]|3[01])$/; //yyyy-mm-dd

if (!ymdDash.test(userDate)) {
   return("ERROR: Format must be yyyy-mm-dd");
   }
   else {
   return true;
   }
}
});

[ohhgr]

Hi Leslie,

Since, business rule already runs on server, you   wouldn't need to call another script include from Business Rule. You can directly use the code inside BR.

However, if it's the re-use of the code that you're aiming to achieve, I'm not sure how to use Client callable Script Include from a BR. May be someone who has done something similar may come up with a strategy.

Thanks,

Mandar

[surendarm]

Hi Leslie,

In an after or before business rule, define the below code.

For example:

function onBefore(curret, previous) //use the same template which servicenow provides by default

{

      var start = current.start_date;

        var checkStartFormat = checkDateFormatV2(start);

    if (checkStartFormat != 'true')

          {  

                        gs.addErrorMessage('start_date error');

                        current.setAbortAction(true);

            }

}

function checkDateFormatV2(dateVal)

{

      var userDate = dateVal

                //Check date format will match one of the available system dates  

                var ymdDash = /^\d{4}[\-](0?[1-9]|1[012])[\-](0?[1-9]|[12][0-9]|3[01])$/; //yyyy-mm-dd  

                  if (!ymdDash.test(userDate))

                  {  

                                    return("ERROR: Format must be yyyy-mm-dd");  

                  }  

              else

              {  

                              return true;

                }

}

You can actually reuse the code but since you have defined with Glideajax definition, for a normal script you cant use the same code.

Instead, you can define the same sets of code written in script include in the same business rule as a different function and call them in   the same business rule.

Try this out and let me know if you have any issues.

Thanks,

Surendar M

[coryseering]

Hi Leslie,

Surendar and Mandar are recommending simply duplicating the core logic of your code in your Business Rule. This is not a bad choice- it's a fairly simple bit of code you're using, and copying that logic is a quick way to achieve the goal of validating the date server-side during an insert or update operation.

An alternative which would allow you to re-use the code would be to split this into 2 Script Includes- one which GlideAjax can call, and another to do the actual work.

I would propose something along the lines of:

(Client-callable Script Include)

var ClientDateTimeUtils = Class.create();

ClientDateTimeUtils.prototype = Object.extendsObject(AbstractAjaxProcessor, {



       validateCalendarDate: function() {

               //Client date

               var userDate = this.getParameter('sysparm_userDate');



               if (MyDateTimeUtils.validateFormat(userDate))

                       return true;



           return("ERROR: Format must be yyyy-mm-dd");

   },



   type : 'ClientDateTimeUtils'

});

(The actual utility collection)

var MyDateTimeUtils =   {

       validateFormat: function(user_date) {

               //Check date format will match one of the available system dates

               var ymdDash = /^\d{4}[\-](0?[1-9]|1[012])[\-](0?[1-9]|[12][0-9]|3[01])$/; //yyyy-mm-dd



               return ymdDash.test(user_date)

       }

};

(An example GlideAjax invocation)

var ga = new GlideAjax("ClientDateTimeUtils");

ga.addParam('sysparm_name','validateCalendarDate');

ga.addParam('sysparm_userDate',"2014-01-01");

ga.getXML(function(response) {console.log(response.responseXML.documentElement.getAttribute("answer"))});

(An example Business Rule using the utility function)

function onBefore(current, previous) {

       var userDate = current.getValue("my_date_field");

       if(!MyDateTimeUtils.validateFormat(userDate)) {

               gs.addInfoMessage("ERROR: Date dormat must be yyyy-mm-dd");

               current.setAbortAction(true);

       }

}

Are you using a Date field to gather the required info? It should be sending the data in the correct format already.

[Anurag Tripathi]

old post...but just came across this

Calling a function that is an extension of the AbstractAjaxProcessor from a Business Rule: