I have been trying to get a datepicker working our for my custom section. I was following this thread http://stackoverflow.com/questions/30257871/umbraco7-new-backoffice-section-edit-date-field-angularjs. I'm able to show the datepicker.

I have this in my view

and I have these two controllers

angular.module("umbraco").controller("Custom.DatepickerController", function ($scope, notificationsService, assetsService, angularHelper, userService, $element) {

    //console.log($element.attr('id'));
    $scope.criteria = new Date();
    //lists the custom language files that we currently support
    //var customLangs = ["pt-BR"];

    //setup the default config
    var config = {
        pickDate: true,
        pickTime: true,
        useSeconds: true,
        format: "YYYY-MM-DD HH:mm:ss",
        icons: {
            time: "icon-time",
            date: "icon-calendar",
            up: "icon-chevron-up",
            down: "icon-chevron-down"
        }

    };

    function applyDate(e) {
        angularHelper.safeApply($scope, function () {
            // when a date is changed, update the model
            console.log(e.localDate);
           // console.log(e.localDate.toIsoDateTimeString);
            if (e.localDate) {
                if (e.localDate) {

                    if (config.format == "yyyy-MM-dd hh:mm:ss") {
                        $scope.criteria[$element.attr('id')] = e.localDate.toIsoDateTimeString();
                    }
                    else {
                        $scope.criteria[$element.attr('id')] = e.localDate.toIsoDateString();
                    }
                }
            }
            console.log($scope.criteria);
        });
    }

        assetsService.loadCss('lib/datetimepicker/bootstrap-datetimepicker.min.css').then(function () {
            var filesToLoad = ["lib/datetimepicker/bootstrap-datetimepicker.js"];

                filesToLoad.push("lib/datetimepicker/bootstrap-datetimepicker.js");

                assetsService.load(filesToLoad).then(
                function () {
                    //The Datepicker js and css files are available and all components are ready to use.

                    // Open the datepicker and add a changeDate eventlistener
                    $element.find("div:first")
                        .datetimepicker(config)
                        .on("changeDate", applyDate);

                    if ($scope.criteria[$element.attr('id')]) {
                        //manually assign the date to the plugin
                        $element.find("div:first").datetimepicker("setValue", $scope.criteria[$element.attr('id')]);
                    }


                    //Ensure to remove the event handler when this instance is destroyted
                    $scope.$on('$destroy', function () {
                        $element.find("div:first").datetimepicker("destroy");
                    });
                });
        });

});

angular.module("umbraco").controller("Event.EventAddActivityController", function ($scope, $routeParams, eventResource, activityResource, notificationsService, navigationService) {

    $scope.title = "Activities for this event";

    var id = $routeParams.id;

    if (id === undefined || id === null)
        $scope.edit = false;


    $scope.nameLocked = true;
    $scope.loaded = false;
    $scope.event = {};
    $scope.activities = [];

    if ($routeParams.id == -1) {
        $scope.node = {};
        $scope.loaded = true;
    }
    else {
        $scope.loaded = true;
        eventResource.getById(id).then(function (response) {
            $scope.event = response.data;
        });
        activityResource.getAll().then(function (response) {
            $scope.activities = response.data;
        });
    }

});

I would like to know How I can get the value of my calendar criteria.from and use it (that value from criteria.from) on my main controller "Event.EventAddActivityController". I just need to use several datepickers in this view and I haven't found a way to reuse umbraco datepicker that's why I started it to use this example. Any help would be appreciate!