成分是否可注射? [英] Component as Injectable?

问题描述

我正在尝试构建自己的Modal组件，以便能够在我的Angular2 Apps中重用.我正在考虑不同的方法，并且想知道是否可以创建同时用作@Injectable的@Component?我正在考虑这一点，因为我想为Modal构建一个模板，并将其放在一个位置.

I am trying to build my own Modal component, that I would be able to reuse throughout my Angular2 Apps. I am considering different approaches, and I am wondering if it is possible to create @Component that also serves as @Injectable? I am considering this, as I want to build a template for the Modal, and keep it in one place.

谢谢

推荐答案

默认情况下，一个组件可以注入@Component()(或@Directive())包括@Injectable().

A component is injectable by default @Component() (or @Directive()) includes @Injectable().

不要期望获得注入组件的特定实例.例如，这适用于constructor(@Host() private parentComponent)，其中DI查找仅限于父注入器，直至宿主元素的注入器.

Don't expect to get a specific instance of a component injected. This works for example with constructor(@Host() private parentComponent) where DI lookup is limited to parent injectors up to the injector of the host element.

通常在您的用例中使用DynamicComponentLoader，它仅接受组件的类型，而不接受实例的类型.依赖注入只会创建一个组件类的实例，而不会创建例如关联的视图.

Normally for your use case DynamicComponentLoader is used which only accepts the type of a component, not an instance. Dependency injection would just create an instance of the components class but not for example the associated view.

这篇关于成分是否可注射?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！