Angularjs 角度国家/地区选择模块未选择默认值

我正在使用模块。 我无法将默认选定值设置为下拉列表

<input country-select data-ng-model="userCtrl.country" class="signup-country" placeholder="Country*" ng-required="true" name="country" id="signUpCountry" value="{{userCtrl.country}}">

}]))

但这也不会选择默认值。

---

非常感谢您的帮助。

我可以通过添加$timeout来选择默认值 以下是更新的模块代码：

angular.module('angular-country-select', [])
.directive('countrySelect', ['$timeout', function($timeout) {
  return {
  restrict: 'A',
  require:'ngModel',
  link: function(scope, elem, attrs, ngModelCtrl) { console.log(attrs, attrs.placeholder);
    var data = [{"id":"AF","text":"Afghanistan"},{"id":"AX","text":"Åland Islands"},...];
    var select2Inst = elem.select2({
      data: data
    });
    $timeout(function() {
      if (attrs.value != '') {
        ngModelCtrl.$setViewValue(attrs.value);
        scope.$apply(select2Inst.select2('val', attrs.value));
      }
    }, 2000);
  }
};
}]);

angular.module('angular-country-select', [])
.directive('countrySelect', ['$timeout', function($timeout) {
  return {
  restrict: 'A',
  require:'ngModel',
  link: function(scope, elem, attrs, ngModelCtrl) { console.log(attrs, attrs.placeholder);
    var data = [{"id":"AF","text":"Afghanistan"},{"id":"AX","text":"Åland Islands"},...];
    var select2Inst = elem.select2({
      data: data
    });
    $timeout(function() {
      if (attrs.value != '') {
        ngModelCtrl.$setViewValue(attrs.value);
        scope.$apply(select2Inst.select2('val', attrs.value));
      }
    }, 2000);
  }
};
}]);