Disable specific weekdays in Cornerstone Date Picker elements

[Jloupf]

Hello,

I am using the Date Picker elements in Cornerstone Forms and I would like to know whether it is possible, using only Cornerstone settings, to disable some days of the week, for example Sundays only.

My goal is simple:

• keep the Date Picker in single mode
• prevent users from selecting Sunday
• keep all the native settings configured in the Cornerstone UI

What I tried:

• initializing Flatpickr with custom JavaScript
• using a selector on my field and adding a disable function for Sundays

Example:

document.addEventListener('DOMContentLoaded', function () {
  if (typeof flatpickr !== "undefined") {
    document.querySelectorAll(".notsundays").forEach(function(el) {
      if (!el._flatpickr) {
        flatpickr(el, {
          mode: "single",
          dateFormat: "Y-m-d",
          disable: [
            function(date) {
              return date.getDay() === 0;
            }
          ]
        });
      }
    });
  }
});

The problem is that as soon as I do this, it seems to override the settings already defined in Cornerstone for that field. So I lose the benefit of configuring the Date Picker directly in the builder.

My questions are:

• Is there a way to disable specific weekdays, such as Sundays, directly in Cornerstone, without custom JS?
• If not, is there a recommended way to extend the existing Date Picker / Flatpickr instance without replacing the Cornerstone configuration?
• More generally, is there an official method for adding Flatpickr options like disable while preserving the field settings made in the UI?

Thanks.

[christian]

Hey @Jloupf,

Thanks for writing in! Regretfully this isn’t a feature offered yet. It could be possible with custom development, but this would be outside the scope of support we can offer.

What we can do is add this to our list of feature request so that this use case may be taken into account in the future.

Thanks for understanding. Take care!