Change format of md-datepicker in Angular Material with momentjs

Question

Angular material introduced a new date picker component found here.

I want the date returned by this component to be in the format yyy-mm-dd but I am not su

Answer 1

in my case I was loosing the PlaceHolder everythig works but the placeHolder was disappearing when I use custom formatting. Below lines solved my problem with placeholder.

$mdDateLocaleProvider.formatDate = function (date) {
                if(date==null)
                return "";
                var m = moment(date);
                return m.isValid() ? m.format('L') : '';
            };