使用angularJS时,您可以使用$provide.decorator('thatService',decoratorFn)
为服务注册装饰功能。
创建服务实例后,$injector
会将它(服务实例)传递给已注册的装饰功能,并将该功能的结果用作装饰服务。
现在假设thatService
使用已注入其中的thatOtherService
。
如何获取对thatOtherService
的引用,以便我能够在我的decoratorFN要添加到.myNewMethodForThatService()
的{{1}}中使用它?
答案 0 :(得分:4)
这取决于确切的用例 - 确定答案需要更多信息 (除非我误解了要求),这里有两种选择:
1)展开ThatOtherService
的{{1}}:
ThatService
2)在装饰器函数中注入.service('ThatService', function ThatServiceService($log, ThatOtherService) {
this._somethingElseDoer = ThatOtherService;
this.doSomething = function doSomething() {
$log.log('[SERVICE-1]: Doing something first...');
ThatOtherService.doSomethingElse();
};
})
.config(function configProvide($provide) {
$provide.decorator('ThatService', function decorateThatService($delegate, $log) {
// Let's add a new method to `ThatService`
$delegate.doSomethingNew = function doSomethingNew() {
$log.log('[SERVICE-1]: Let\'s try something new...');
// We still need to do something else afterwards, so let's use
// `ThatService`'s dependency (which is exposed as `_somethingElseDoer`)
$delegate._somethingElseDoer.doSomethingElse();
};
return $delegate;
});
});
:
ThatOtherService
您可以在此demo中查看两种方法。