Bootstrap datepicker with knockout.js databind

Question

This question is similar to knockoutjs databind with jquery-ui datepicker, but instead of the jQueryUI datepicker, I would like to use one of the Bootstrap datepickers.

Answer 1

my current version is a mix between the already shown solutions:

ko.bindingHandlers.datepicker = {
init: function (element, valueAccessor, allBindingsAccessor) {

    var unwrap = ko.utils.unwrapObservable;
    var dataSource = valueAccessor();
    var binding = allBindingsAccessor();

    //initialize datepicker with some optional options
    var options = allBindingsAccessor().datepickerOptions || {};
    $(element).datepicker(options);
    $(element).datepicker('update', dataSource());
    //when a user changes the date, update the view model
    ko.utils.registerEventHandler(element, "changeDate", function (event) {
        var value = valueAccessor();
        if (ko.isObservable(value)) {
            value(event.date);
        }
    });
},
update: function (element, valueAccessor) {
    var widget = $(element).data("datepicker");

    var value = ko.utils.unwrapObservable(valueAccessor());

    //when the view model is updated, update the widget
    if (widget) {
        widget.date = value;
        if (widget.date) {
            widget.setValue();
            $(element).datepicker('update', value)
        }
    }
}};