End date should not be more than 6 months from start date

Lakshman12 · ‎07-21-2020

I am working on functionality as below

I have two fields on catalog item includes – start date and end date. We do not want users to select end date not more than 6 months from start date.

For example: start date = 07/22/2020

If End date = 1/22/2021 (technically difference is more than 180 days because of few months has 31 days ).

Let us say if end user selects 1/23/2021 as end date, then I should alert them saying not to select as it is more than 6 months calendar days.

I would really appreciate your help. @Pradeep Sharma @Ankur Bawiskar @Chuck Tomasi

Thanks

Lakshman

Ankur Bawiskar · ‎07-22-2020

@Lakshman

Below worked for me:

1) If start date is 22nd July then adding 6months to that is 22nd Jan

2) Now it depends on how 6 months you consider since some months are having 30 and 31 days.

3) I would request to check with business for exact days and that would be better.

a) So if user gives 23rd Jan then it gives alert and clears as it is not valid

b) If user gives 22nd Jan then it is ok

Client Script:

Note: Ensure you give valid variable names for start and end dates

function onChange(control, oldValue, newValue, isLoading) {
	if (isLoading || newValue == '') {
		return;
	}

	var ga = new GlideAjax('DateTimeAjax');
	ga.addParam('sysparm_name', "compareDates");
	ga.addParam('sysparm_start', g_form.getValue('start_date')); // start variable
	ga.addParam('sysparm_end', g_form.getValue('end_date')); // end variable
	ga.getXMLAnswer(function(answer){
		if(answer != ''){
                        alert('End date should be within 6 months from start date');
			g_form.clearValue('end');	
		}
	});
	//Type appropriate comment here, and begin script below

}

Script Include: It should be client callable

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

	compareDates: function(){

		var start = new GlideDateTime(this.getParameter('sysparm_start'));
		var end = new GlideDateTime(this.getParameter('sysparm_end'));
		start.addMonthsUTC(6);

		if(end.getNumericValue() > start.getNumericValue()){
			return 'End Date should be withing 6 months from start';
		}
		return '';
	},

	type: 'DateTimeAjax'
});

Output:

Regards
Ankur

Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader

View solution in original post

Naveen Sagar S1 · ‎07-21-2020

Hi Lakshman,

Client Script : onChange (end date)

function onChange(control, oldValue, newValue, isLoading) {

if (isLoading || newValue == '') {

return;

}

var ga = new GlideAjax('ScriptIncludeName');

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

ga.addParam('start_date', g_form.getValue('start_date'));

ga.addParam('months_to_add', 6);

ga.getXML(getEndDate);

}

function getEndDate(response) {

var answer = response.responseXML.documentElement.getAttribute("answer");

if (answer) {
if(g_form.getValue('end_date') > answer) {
alert("End date should be less than " + answer);
}

}
}

Script Include :

var ScriptIncludeName = Class.create();

ScriptIncludeName.prototype = Object.extendsObject(AbstractAjaxProcessor, {
addMonths: function() {

var start_date = this.getParameter('start_date');

var months = this.getParameter('months_to_add');
var gdt = new GlideDateTime(start_date);
gdt.addMonths(months);
return gdt.getDate();

},

}

This will solve your issue of 180 days.

Lakshman12 · ‎07-21-2020

Hi Naveen,

I am getting Null as return value from script include when I implemented yours.

Thanks

Lakshman

Indrajit · ‎07-21-2020

Hey Lakshman,

Check out this below similar thread it will help you,

https://community.servicenow.com/community?id=community_question&sys_id=409035e0dbcfb3c414d6fb243996...

kindly mark Correct and Helpful if Applicable.

Regards,

Indrajit.

Naveen Sagar S1 · ‎07-22-2020

Apologies, my bad can you replace

start_date with sysparm_start_date
months_to_add with sysparm_months_to_add

in both the client script and script include. That should work fine.