Select2 (no results match) with AngularJS

I have a select2 (ui-selecet) and need that when there is no result or all the options have been selected (multi-select) will appear a message and the option to open a modal.

When I click on the button it does not open the modal and does not execute the function.

Select2 Component:

formatNoMatches: function () {
return "Nenhum resultado encontrado. <button type='button' class='btn btn-default' ng-click='modalOpen()'>" + "Cadastrar" + "</button>";
}

Select2 View:

<select ui-select2="select2Options" multiple="multiple" ng-model="select" style="width: 100%" data-placeholder="Selecione uma pessoa">`
<option value=""></option>
<option ng-repeat="person in people" value="{{person}}">{{person.name}}</option>
</select>

Obs.: I think it should be a matter of scope, but I do not know how to solve it.

Would anyone have any ideas or solutions?

Solution

Well I managed to solve it like this:

In the component Select2.js I made the change so it displays a button and call an OpenModal(this) function.
I put a _myOptions variable that gets the same arguments as the variable args line 3440.
Next I use this variable (_myOptions) and get the data-target.
In the controller I created a $scope.select2Options where I pass the modal target that is accessed in Select2.js

With this when the results finish or do not have it a message appears and when clicking the button it opens the modal.

ViewHTML:

<select ui-select2="select2Options" data-target="#animal" id="select2Callback" multiple="multiple" ng-model="person" >
                            <option value=""></option>
                            <option ng-repeat="person in people" value="{{person}}">{{person.name}}</option>
                        </select>

Select2.js Component:

formatNoMatches: function () {
        var target = _myOptions[0].target;
        return "Nenhum resultado encontrado. <button type='button' class='btn btn-default' data-toggle='modal' "+
               "data-target='"+target+"' onClick='openModal(this)'> Cadastrar </button>";
    }

Controller:

$scope.select2Options = {
            allowClear: true,
            multiple: true,
            target: '#teste'
        };

ModalDirective:

angular.module('modalDirectives', [])
    .directive('modal', function () {
        var ddo = {};
        ddo.restrict = "E";
        ddo.transclude = true;
        ddo.scope = {
            modalid: '@',
            title: '@'
        };
        ddo.templateUrl = "/app/js/directives/modal.html";
        return ddo;
    })