Make Field Read Only according to the condition

[Kumar887]

Hi Community, Good Day!!!!
As we know that in incident table when we add value on Caller field then for some users, 'location' field's value auto-populates. So, in my requirement, if location field gets auto-populates, make it read-only, like in below:

and when 'location' does not gets auto-populates and user sets it manually, then make it editable even it is set.

Thanks in Advance!!

[Sujatha V M]

@Kumar887  Create a client script on Incident table as below, 

Table : Incident [incident]

Type : onChange

Field name : Caller

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
    if (isLoading) {
        return;
    }

    var caller = g_form.getReference('caller_id', setLocation);
}

function setLocation(caller) {
    if (caller)
        g_form.setValue('location', caller.location);
		if(caller.location != ''){
			g_form.setReadOnly('caller_id.location', true);
		}
		else{
			g_form.setReadOnly('caller_id.location', false);
		}
}

Results : 

If location is not empty, make the field as read-only.

If the location is empty, make the field as editable.

Please mark this as helpful and accept it as a solution if this resolves your query.

Thanks,

Sujatha V.M.