Build a Draft Button for a form with many mandatory Fields (checkMandatory)

[Meloper]

We have a form with 25+ mandatory Fields.
We wannt to have a Draft Option.
i tried this in a ui action:

function save_draft() {

    g_form.checkMandatory = false; //override mandatory fields
    gsftSubmit(null, g_form.getFormElement(), 'save_draft_server');

}

//Code that runs without 'onclick'
//Ensure call to server-side function with no browser errors
if (typeof window == 'undefined') {
    current.update();
    action.setRedirectURL(current);
}

But it does not work. I always get the Message that Mandatory Fields are missing and no value is saved.
Is there an Option to do this?


Update: maybe solved with the answer out of this Question:
https://www.servicenow.com/community/developer-forum/saving-records-without-populating-mandatory-fie...

function Saved() {

      alert("checking");
      g_form.checkMandatory = false ;
      gsftSubmit(null, g_form.getFormElement(),'saved');
      //g_form.save();
}
action.setRedirectURL(current);
      current.update();

[Dr Atul G- LNG]

Hi @Meloper 

Please don't do this. We tried something similar and the system performance get impacted very badly. Reason be, for  user it is just a draft but for system, every click on this draft button will create a new row/ record in backend to save the changes and now just imagine, if a user click 5-10 times draft button how many time records get saved in DB and while retrieval same issue happened. 

Not  a good requirement better to move this to catalog item and use OOTB save as draft but dont do this on native form view. 

[Meloper]

 I solved it with this script.
This was mentioned in a comment there
https://www.servicenow.com/community/developer-forum/saving-records-without-populating-mandatory-fie...

guess there is no Problem, because i only make the field not mandatory.
the Draft Option in Portal is a different approach

function save_draft() {

    var i;
    var arrValues = g_form.getMissingFields().toString().split(',');

    // checking existance of value
    for (i = 0; i < arrValues.length; i++) {
        g_form.setMandatory(arrValues[i], false);
    }
    gsftSubmit(null, g_form.getFormElement(), 'save_draft_server');

}

//Code that runs without 'onclick'
//Ensure call to server-side function with no browser errors
if (typeof window == 'undefined') {
    action.setRedirectURL(current);
    current.update();
}