[英]how to emit events from a factory
How can I emit events from a factory or service. 如何从工厂或服务中发出事件。 I am unable to inject $scope into the factory, thus unable to emit events. 我无法将$ scope注入工厂,因此无法发出事件。
I get the following error - Unknown provider: $scopeProvider <- $scope
我收到以下错误 - Unknown provider: $scopeProvider <- $scope
Thanks, Murtaza 谢谢,穆尔塔扎
Inject $rootScope instead of $scope and then emit it on the $rootScope. 注入$ rootScope而不是$ scope,然后在$ rootScope上发出它。
myApp.factory('myFactory', ['$rootScope', function ($rootScope) {
$rootScope.$emit("myEvent", myEventParams);
}]);
Factories don't have access to the current controller/directive scope because there isn't one. 工厂无法访问当前的控制器/指令范围,因为没有。 They do have access to the root of the application though and that's why $rootScope is available. 他们确实可以访问应用程序的根目录,这就是$ rootScope可用的原因。
You cannot inject a controller's scope into a service. 您无法将控制器的范围注入服务。 What you can do is: 你能做的是:
eg 例如
app.factory('MyService', function() {
return {
myFunction: function(scope) {
scope.$emit(...);
...
}
};
});
eg 例如
app.factory('MyService', ['$rootScope', function($rootScope) {
return {
myFunction: function() {
$rootScope.$emit(...);
...
}
};
}]);
In your factory inject $rootScope as- 在你的工厂注入$ rootScope作为 -
myApp.factory('myFactory',function($rootScope){
return({
// use $rootScope as below to pass myEventParams to all below in hierarchy
$rootScope.$broadcast("myEvent",myEventParams);
})
}]);
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