Jason van der Zeeuw Jason van der Zeeuw - 2 years ago 261
AngularJS Question

Angular UI Bootstrap datepicker, callback when view changes

I use the Angular UI Bootstrap, both the latest versions.

I would love to have a callback when my view changes, so i.e. when I switch from May to June. I need this because of the following scenario:

My datepicker shows available and unavailable dates with the customClass function.
I fetch all availabilities of the current month, but when I click next or previous, I don't have any callback to fetch the new availabilities.

Also, I don't want an asynchronous call 42 times (one for every class) because you will also get lots of timing issues in de datepicker.
I hope someone knows a way to achieve this, I've searched very long for a solution now.


<div class="input-group">
<span class="input-group-addon" ng-click="vm.OpenDatepicker($event,'1')"><i class="ti-calendar"></i></span>
<input type="text" class="form-control" datepicker-options="dpOptions" readonly style="cursor:pointer; background-color:white;"
uib-datepicker-popup="dd-MMMM-yyyy" min-date="minDate" show-weeks="true" ng-model="selectedDate"
is-open="vm.$scope.datepickers[1]" show-button-bar="false" ng-click="vm.OpenDatepicker($event,'1')" />

In the $scope.dpOptions (DatePicker Options) I have defined what the custom classes need to be:

$scope.dpOptions.customClass= function (data) {
//Here are my availabilities of the first month fetched
//When I change the month in my view, I first want to have the other availabilities
//so I can return the new red/green classes

Answer Source

My colleague found a solution using an angular $provide.decorator function! This will add some additional features to any existing directive.

$provide.decorator('uibDatepickerDirective', function ($delegate) {
        var directive = $delegate[0];
        var directiveCompile = directive.compile;

        directive.compile = function () {
            var link = directiveCompile.apply(this, arguments);

            return function (scope) {
                link.apply(this, arguments);

                var oldMove = scope.move;
                scope.move = function (direction) {
                    oldMove.apply(this, arguments);
                    scope.$emit('datepicker.monthChanged', this.rows[0][0].date, this.rows[5][5].date);
        return $delegate;
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