datepicker - Date picker validation in angularJS not working

Question

I am trying to implement validations for my date time picker. I have a 'From' date picker and a 'To' datepicker in an Angular partial view. I want the 'From' date picker to display error message if a past date is selected and the 'To' date picker should display error message if the selected date is before the 'From' date. The error messages are supposed to appear on selection of the date.

My HTML is :

<div>
    <form id="edit-profile" novalidate name="editReservationForm" autocomplete="off" class="form-horizontal">
        <fieldset>
            <div class="control-group">
                <label class="control-label" for="reservation.reservedFrom">Reserved From<sup>*</sup></label>
                <div class="controls input-group date" data-provide="datepicker">
                    <input type="text" class="span4" style="width:150px" name="reservedFrom" placeholder="Reserved From" ng-model="reservation.reservedFrom"
                           validator="required" required-error-message="Date is required" valid-method="watch" id="startDate" />
                    <div class="input-group-addon">
                        <span class="glyphicon glyphicon-th"></span>
                    </div>

                </div> <!-- /controls -->
            </div> <!-- /control-group -->

            <div class="control-group">
                <label class="control-label" for="reservation.reservedTill">Reserved Till<sup>*</sup></label>
                <div class="controls input-group date" data-provide="datepicker">
                    <input type="text" style="width:150px" class="span4" name="reservedTill" placeholder="Reserved Till" ng-model="reservation.reservedTill"
                           validator="required" required-error-message="Date is required" valid-method="checkErr" id="endDate" ng-change='checkErr()' />
                    <div class="input-group-addon">
                        <span class="glyphicon glyphicon-th"></span>
                    </div>
                    <span>{{errMessage}}</span>

                </div> <!-- /controls -->
            </div> <!-- /control-group -->
        </fieldset>
    </form>

</div>

Controller :

myApp.controller('editReservationController', ['$scope', '$filter', 'reservationResolved', 'pocResolved', 'accountResolved', 'reservationServices', '$location', '$state',
    function ($scope, $filter, reservationResolved, pocResolved, accountResolved, reservationServices, $location, $state) {
        $scope.reservation = new Object();
        $scope.accounts = accountResolved.data;
        $scope.pocs = pocResolved.data;
        $scope.reservation.employee = reservationResolved.data;



        $scope.updateReservation = function () {
            if ($scope.editReservationForm.$valid) {

                //TODO: fix it properly
                $scope.reservation.reservedTill = '';
                $scope.reservation.reservedFrom = '';

                $scope.reservation.reservedFrom = $('#startDate').val();
                $scope.reservation.reservedTill = $('#endDate').val();

               reservationServices.updateReservation($scope.reservation).then(function (result) {
                        $scope.data = result.data;
                        if (!result.data.error) {
                            $state.transitionTo('employeeTalentPool', {
                                id: $state.params.id
                            });
                        }
                    });

            }

        };



        $scope.cancel = function () {
            $location.path("/reservations");
        };
        $scope.checkErr = function () {
            var startDate = new Date($scope.reservation.reservedFrom),
            endDate = new date($scope.reservation.reservedTill);
            $scope.errMessage = '';


            if (startDate < new Date()) {
                $scope.errMessage = 'Start Date should be greater than or equal today';
                return false;
            }
            if (new Date(endDate) < new Date()) {
                $scope.errMessage = 'End Date should be greater than or equal today';
                return false;
            }
            if (endDate < startDate) {
                $scope.errorMsg = "End must be after start";
                return false;
            }
            return true;
        };
    }]);

I am totally new to Angular and I'm trying to understand it by doing projects. Can anyone have a check and provide a solution?

Thanks in advance...

Answer 1

A different approach without displaying any error message and satisfying selection criteria as mentioned in problem statement

Here is the plunker of working solution bit slightly different from your implementation,I've used bootstrap datepicker for this example which is almost similar to datetimepicker. Hope this will give you an understanding.

In the controller we can control when and what from and to dates should be disabled on their corresponding selection.Using minDate provided by datepicker we can change the min date of To date field to From date's.

By doing this we can eliminate the display of error message and which will also satisfy your selection criteria of From & To dates.

angular.module('ui.bootstrap.demo', ['ngAnimate', 'ui.bootstrap']);
angular.module('ui.bootstrap.demo').controller('DatepickerPopupDemoCtrl', function($scope) {

    $scope.datePicker = {};
    $scope.start = new Date();
    $scope.end = new Date();

    $scope.datePicker.minStartDate = new Date();
    // $scope.datePicker.maxStartDate = $scope.end; 
    $scope.datePicker.minEndDate = $scope.start;
    //   $scope.datePicker.maxEndDate = $scope.end; //fixed date same as $scope.maxStartDate init value

    // watcher to watch the "From" date and set the min date for 'To' datepicker 
    $scope.$watch('start', function(v) {
        $scope.datePicker.minEndDate = v;
        $scope.dateOptions2.minDate = v;
    });


    $scope.dateOptions1 = {
        //dateDisabled: disabled,
        formatYear: 'yyyy',
        //  maxDate: $scope.datePicker.maxStartDate,
        minDate: $scope.datePicker.minStartDate,
        startingDay: 1
    };

    $scope.dateOptions2 = {
        //dateDisabled: disabled,
        formatYear: 'yyyy',
        //  maxDate: $scope.datePicker.maxEndDate,
        minDate: $scope.datePicker.minEndDate,
        startingDay: 1
    };
    // Disable weekend selection
    function disabled(data) {
        var date = data.date,
            mode = data.mode;
        return mode === 'day' && (date.getDay() === 0 || date.getDay() === 6);
    }
    $scope.open1 = function() {
        $scope.popup1.opened = true;
    };

    $scope.open2 = function() {
        $scope.popup2.opened = true;
    };

    $scope.formats = ['dd.MM.yyyy'];
    $scope.format = $scope.formats[0];
    $scope.altInputFormats = ['M!/d!/yyyy'];

    $scope.popup1 = {
        opened: false
    };

    $scope.popup2 = {
        opened: false
    };

});

In your HTML you can display like below

<div ng-controller="DatepickerPopupDemoCtrl">
    <h5>From Date</h5>
        <p class="input-group">
          <input type="text" 
                  class="form-control" 
                  uib-datepicker-popup="{{format}}" 
                  ng-model="start" 
                  is-open="popup1.opened" 
                  datepicker-options="dateOptions1" 
                  close-text="Close" 
                  readonly="true" />
          <span class="input-group-btn">
            <button type="button" class="btn btn-default" ng-click="open1()">
              <i class="glyphicon glyphicon-calendar"></i>
            </button>
          </span>
        </p>

        <hr>
      <h5>To Date</h5>
        <p class="input-group">
          <input type="text" 
                  class="form-control" 
                  uib-datepicker-popup="{{format}}" 
                  ng-model="end" 
                  is-open="popup2.opened" 
                  datepicker-options="dateOptions2" 
                  close-text="Close" 
                  readonly="true"/>
          <span class="input-group-btn">
            <button type="button" class="btn btn-default" ng-click="open2()">
              <i class="glyphicon glyphicon-calendar"></i>
            </button>
          </span>
        </p>

  </div>