控制器之间的正确通信方式是什么?
我目前正在使用一个可怕的软糖涉及窗口:
function StockSubgroupCtrl($scope, $http) {
$scope.subgroups = [];
$scope.handleSubgroupsLoaded = function(data, status) {
$scope.subgroups = data;
}
$scope.fetch = function(prod_grp) {
$http.get('/api/stock/groups/' + prod_grp + '/subgroups/').success($scope.handleSubgroupsLoaded);
}
window.fetchStockSubgroups = $scope.fetch;
}
function StockGroupCtrl($scope, $http) {
...
$scope.select = function(prod_grp) {
$scope.selectedGroup = prod_grp;
window.fetchStockSubgroups(prod_grp);
}
}
我喜欢$rootscope。使用Emit实现相互通信。我建议清洁和性能有效的解决方案，不污染全球空间。
module.factory("eventBus",function (){
var obj = {};
obj.handlers = {};
obj.registerEvent = function (eventName,handler){
if(typeof this.handlers[eventName] == 'undefined'){
this.handlers[eventName] = [];
}
this.handlers[eventName].push(handler);
}
obj.fireEvent = function (eventName,objData){
if(this.handlers[eventName]){
for(var i=0;i<this.handlers[eventName].length;i++){
this.handlers[eventName][i](objData);
}
}
}
return obj;
})
//Usage:
//In controller 1 write:
eventBus.registerEvent('fakeEvent',handler)
function handler(data){
alert(data);
}
//In controller 2 write:
eventBus.fireEvent('fakeEvent','fakeData');
这就是我使用工厂/服务和简单依赖注入(DI)的方法。
myApp = angular.module('myApp', [])
# PeopleService holds the "data".
angular.module('myApp').factory 'PeopleService', ()->
[
{name: "Jack"}
]
# Controller where PeopleService is injected
angular.module('myApp').controller 'PersonFormCtrl', ['$scope','PeopleService', ($scope, PeopleService)->
$scope.people = PeopleService
$scope.person = {}
$scope.add = (person)->
# Simply push some data to service
PeopleService.push angular.copy(person)
]
# ... and again consume it in another controller somewhere...
angular.module('myApp').controller 'PeopleListCtrl', ['$scope','PeopleService', ($scope, PeopleService)->
$scope.people = PeopleService
]
上面的答案是@zumalifeguard提到的一个Angular问题，这个问题已经不存在了(至少在>1.2.16版本和“可能更早”)。但我读了所有这些答案，却没有一个实际的解决方案。
在我看来，现在的答案应该是
使用$rootScope中的$broadcast
从需要了解事件的本地$作用域使用$on进行监听
所以要发表
// EXAMPLE PUBLISHER
angular.module('test').controller('CtrlPublish', ['$rootScope', '$scope',
function ($rootScope, $scope) {
$rootScope.$broadcast('topic', 'message');
}]);
和订阅
// EXAMPLE SUBSCRIBER
angular.module('test').controller('ctrlSubscribe', ['$scope',
function ($scope) {
$scope.$on('topic', function (event, arg) {
$scope.receiver = 'got your ' + arg;
});
}]);
普伦克斯
常规$scope语法(如上所示)
new Controller As语法
如果您在本地$作用域上注册了侦听器，当关联的控制器被删除时，它将被$destroy自身自动销毁。
