Sorry for the delay! I went down the list of different false values to try ("false", false, 0, '', null, etc.). I gave it a shot with g_form and even tried setting with getElementById (on the record producer, not widget), and jQuery (try all the things!). I even tried using a select box instead. No dice.
I want to say I tried g_form.submitted, but cannot confirm. The new problem I ran into was that the form did stop submission when I wanted it to, but the "Submit" button was stuck on "Submitted" so it couldn't be clicked again to actually submit!
I ended up with a client script (below) for redirecting from a KB I *eventually* found on HI:
https://hi.service-now.com/kb_view.do?sysparm_article=KB0657429
When submitting a record in the Service Portal, users can be unexpectedly redirected to the record list page, without succeeding to actually submit the form
Related: https://hi.service-now.com/kb_view.do?sysparm_article=KB0715633
On the Service Portal form page in the London release, the UI action buttons (eg: "Save", "Cancel Request") don't work on the first click, the following warning appears in the browser console, g_form) [NOACTION] Could not find UI Action: none,
function onSubmit() {
if(g_form.getValue('wo_number') == ''){
g_form.addErrorMessage('Unable to find order number. blah blah blah stop form submit here blah blah');
return false;
}else{
if(window === null){ //Portal version
setTimeout(function(){ //From KB0657429 on HI
top.window.location = '/meports?id=success';
}, 3000);
//console.log("Submitting");
}else{ //Desktop version
//jslog("Submitting");
window.location = "/meports?id=success";
}
}
}
