[英]Angularjs adding callback after controller has been loaded from outside controller
Is it possible to add a callback to be called after a controller has been loaded in angular? 是否有可能在将控制器加载到angular中之后添加要调用的回调? I want to listen such an event from outside that controller however!
我想从该控制器外部监听这样的事件!
I'm integrating our application with an existing angular application and I don't want to modify its source files. 我正在将我们的应用程序与现有的angular应用程序集成在一起,并且我不想修改其源文件。 To that end I need to be able to take loaded controllers and enhance their scopes with custom functionality.
为此,我需要能够使用已加载的控制器并通过自定义功能增强其作用域。 However many controllers are not loaded on application start and thus I need to be able to intercept them right after they have been loaded (right after a specific view has been loaded for example) and run the modifications.
但是,许多控制器在应用程序启动时并未加载,因此我需要能够在它们加载后立即拦截它们(例如,在加载特定视图之后)并运行修改。
How can I achieve that, without changing any of the source files. 我怎样才能做到这一点,在不改变任何的源文件。 All changes and listeners must be added from third party code.
必须从第三方代码添加所有更改和侦听器。
Example code: 示例代码:
awesome.js: awesome.js:
awesomeApp.controller('AwesomeController', ['$scope', function($scope) {
$scope.awesomeFunction = function...
}]);
punyIntegration.js punyIntegration.js
(function() {
$rootScope.$on('awesomeControllerHasBeenLoaded', function(controller) {
controller.scope.punyFunction = function...
});
})();
By listening to the $viewContentLoaded
event you can achieve such functionality. 通过监听
$viewContentLoaded
事件,您可以实现这种功能。 However to do this on any page and not on a specific view, you have to listen via the $rootScope
like so: 但是,要在任何页面上而不是在特定视图上执行此操作,都必须通过
$rootScope
进行监听,如下所示:
$rootScope.$on("$viewContentLoaded", function($event, data) {
//at this point the view has been loaded
//and you have access to its scope (i.e the controller's scope)
//via angular.element(any selector).scope()
});
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