javascript - How to wrap the datetimepicker js into AngularJS directive

Question

I have spent sometime on researching the existing datetime directives of angularjs.

Both ngularUI and AngularStrap do not provide a datetimepicker as I needed. Of course, I know use a datepicker and timepicker together to archive the purpose.

I have searched the related topic from internet and stackoverflow. Found some interesting and helpful info.

http://dalelotts.github.io/angular-bootstrap-datetimepicker/, there is a datetimepicker, but I dislike the usage of this directive.

connecting datetimepicker to angularjs , this topic is very helpful, I tried to wrap my datetimepicker directive following the steps.

My work is based on https://github.com/Eonasdan/bootstrap-datetimepicker, a bootstrap 3 based datetimepicker, the UI is very nice.

app.directive('datetimepicker', function() {
    return {
        restrict: 'A',
        require: 'ngModel',
        link: function(scope, element, attrs, ngModelCtrl) {
            console.log('call datetimepicker link...');
            var picker = element.datetimepicker({
                dateFormat: 'dd/MM/yyyy hh:mm:ss'
            });

            //ngModelCtrl.$setViewValue(picker.getDate());

            //model->view
            ngModelCtrl.$render(function() {
                console.log('ngModelCtrl.$viewValue@'+ngModelCtrl.$viewValue);
                picker.setDate(ngModelCtrl.$viewValue || '');
            });

            //view->model
            picker.on('dp.change', function(e) {
                console.log('dp.change'+e.date);              
                scope.$apply(function(){
                    ngModelCtrl.$setViewValue(e.date);
                });
            });
        }
    };
});

And use it in my view.

<div class="col-md-6">
  <div class="input-group date" id="endTime" data-datetimepicker  ng-model="stat.endTime" data-date-format="MM/DD/YYYY hh:mm A/PM" >
    <input class="form-control" type="text" placeholder="End"/>
    <span class="input-group-addon"><span class="glyphicon glyphicon-calendar"></span>
    </span>
  </div>
</div>

There are some problems I found.

1. If the date is set via json before rendered in view, the initial date did not display, I can not see any log of the execution of ngModel render method.
2. When I picked a date, it got a string based datetime to the json data, not a long format. And in other related fragment in the view, the string based date can not parsed by angular date filter.
3. When used it in modal dialog, it's value is not cleared when the modal window is popup in the next time.

Thanks in advance.

Answer 1

I had the same issue. Here's what I ended up doing that worked well for me:

'use strict';

angular.module('frontStreetApp.directives')
    .directive('psDatetimePicker', function (moment) {
        var format = 'MM/DD/YYYY hh:mm A';

        return {
            restrict: 'A',
            require: 'ngModel',
            link: function (scope, element, attributes, ctrl) {
                element.datetimepicker({
                    format: format
                });
                var picker = element.data("DateTimePicker");

                ctrl.$formatters.push(function (value) {
                    var date = moment(value);
                    if (date.isValid()) {
                        return date.format(format);
                    }
                    return '';
                });

                element.on('change', function (event) {
                    scope.$apply(function() {
                        var date = picker.getDate();
                        ctrl.$setViewValue(date.valueOf());
                    });
                });
            }
        };
    });

Here's the HTML:

<!-- The dueDate field is a UNIX offset of the date -->
<input type="text"
       ng-model="dueDate"
       ps-datetime-picker
       class="form-control">

You can check out the gists and a bit more information in my blog post.