我正在编写一个指令,用于在名为djlist
directive('djlist', function(urls) {
return {
restrict: 'ACE',
templateUrl: urls.list_objs_template,
scope: {},
controller: ['$scope', '$resource',
function($scope, $resource) {
$scope.objs = $resource(urls.list_objs);
$scope.objs_api = $resource(urls.list_objs_api);
$scope.data = $scope.objs.get();
}
]
};
})
来自服务器的数据显示为ng-repeat
。数据数组中的每个对象都附有一个删除按钮,这是另一个名为djdel
<div class="row panel panel-primary">
<h3 class="panel-heading">Data from REST</h3>
<div class="panel-body">
<table class="table">
<tr>
<th>Content</th>
<th>Date Created</th>
<th>Action</th>
</tr>
<tr ng-repeat="d in data.objects">
<td>{{ d.content }}</td>
<td>{{ d.date }}</td>
<td>
<djdel ng-click="del($index)" model-pk="d.id"></djdel>
</td>
</tr>
</table>
</div>
</div>
以下是我定义djdel
directive('djdel', function() {
return {
restrict: 'ACE',
template: '<button class="btn btn-danger btn-small">Delete</button>',
scope: {
modelPk: '='
}, controller: ['$scope', '$http', '$resource',
function($scope, $http, $resource) {
$scope.del = function(index) {
var $parent = $scope.$parent.$parent;
$parent.objs_api.
remove({id: $scope.modelPk}, function() {
$parent.data.objects.splice(index, 1);
});
};
}
]
};
}).
这很有效。但是,在我的对象从djdel scope
中启动的服务器中成功删除后,我需要一种方法来刷新djlist scope
中的数据集合。范围层次结构为djlist > ng-repeat > djdel
,因此在引用数据收集时为$scope.$parent.$parent
。
有没有办法避免在范围链中引用这么多级别?
答案 0 :(得分:6)
您可以require
父控制器:在djdel
:
directive('djdel', function() {
return {
...
require: "^djlist",
...
link: function(scope, elem, attrs, djlistController) {
// the controller function does not have access to the required
// controllers, so we just inject htem in the scope
scope.djlistController = djlistController;
},
controller: ['$scope', '$http', '$resource',
function($scope, $http, $resource) {
// you can access members of the djlistController as
$scope.djlistController.XXX();
...
}]
};
});
在djlist
中将所需的功能添加到this
(不是$scope
):
directive('djlist', function(urls) {
...
controller: ['$scope', '$resource',
function($scope, $resource) {
this.XXX = function() {
// you can also add variables here
};
...
}]
...
});
答案 1 :(得分:0)
您可以随时尝试在应用程序的$rootScope
中发送事件。
$rootScope.$broadcast("nameOfTheEvent", paramsToSend);
从服务器上删除内容后
$rootScope.$on("nameOftheEvent", function(paramsToRecieve) { refreshList();});
当然,paramsToRecieve是paramsToSend并且可以是任何对象。