Knockout date validation not working correctly

Question

I need to validate date in localized format (SK) and it is not possible with knockout validation.

I am using: Durandal 1.2.0 Knockout 2.3.0 Knockout validation https://g

Answer 1

The only working solution I have for now is below. The problem with this validator is that it also validates default(EN) date format as valid, so I have to add a IF to return this as invalid date format.

var dateValidator = function (val) {
            if (!val)
                return false;
            if (moment(val, 'DD.MM.YYYY HH:mm').isValid()) {
                return true;
            }
            else
                return false;
        };


var startDate = ko.observable().extend({ validation: { validator: dateValidator, message: 'Start of task is not in correct format.' } });