Gravity Forms disable days

readme.md

You could put this script in an HTML field in the form or maybe add to your site scripts.

gf-disable-days.js

gform.addFilter( 'gform_datepicker_options_pre_init', function( optionsObj, formId, fieldId ) {
    // Form ID and Field ID
    if ( formId == 2 && fieldId == 6 ) {
        optionsObj.firstDay = 0;
        optionsObj.beforeShowDay = function(date) {
            let dayOfWeek = date.getDay();
            let today = new Date();
            // let today = new Date('2024-03-09T15:00:00');

            // If the current day is Saturday,
            // then increment 'today' by two days so that the following Monday is disabled.
            if (today.getDay() == 6) {
                today.setDate(today.getDate() + 2);
            }
            // If the current day is Sunday,
            // then increment 'today' by one day so that the following Monday is disabled.
            else if (today.getDay() == 0) {
                today.setDate(today.getDate() +1);
            }
            // If Mon-Fri and the current hour is equal to or greater than 15 (3PM)
            else if ( today.getHours() >= 15 ) {
                // If current day is Friday, increment 'today' by three days so that the following Monday is disabled.
                if (today.getDay() == 5) {
                    today.setDate(today.getDate() + 3);
                // Else Mon-Thur, increment 'today' by one day so that the following day is disabled.
                } else {
                    today.setDate(today.getDate() + 1);
                }
            }
            
            // Enabled days:
            // NOT Sunday
            // NOT Saturday
            // Days after 'today'
            return [(dayOfWeek != 0) && (dayOfWeek != 6) && (date > today), ''];
        };
    }
    return optionsObj;
});