角度APP_INITIALIZER是否在延迟加载的模块内部工作 [英] Angular Does APP_INITIALIZER work inside of lazy loaded modules

问题描述

我有一个延迟加载的模块，正在尝试添加APP_INITIALIZER，但未触发.我有与我的主应用程序完全相同的语法，并且可以按预期工作.延迟加载的模块会触发APP_INITIALIZER吗?

I have a lazy loaded module that I'm trying to add APP_INITIALIZER but its not firing. I have the exact same syntax as my main app where its working as expected. Does a lazy loaded module fire the APP_INITIALIZER?

推荐答案

不幸的是，在延迟加载的模块中未调用APP_INITIALIZER，因为该应用程序之前已被初始化.

Unfortunately APP_INITIALIZER is not called in a lazy loaded module, because the application has already been initialized before.

您现在可以做什么:

您可以简单地利用模块的构造函数，该函数在模块初始化后立即被调用，并由注入器进行充分处理:

You may simply utilize the module's constructor, which is called as soon as the module gets initialized, and gets full treatment by the injector:

@NgModule({
    ...
})
export class MyModule {
  constructor( <INJECTIONS> ) {
    console.log('Module initialized');
  }
}

此方法有两个局限性:

• 您只能在内部使用同步呼叫
• 调用构造函数时，模块尚未初始化，因此，例如，您不能动态地向此处定义的组件添加路由(可悲的是，我想做的事)

将来可能会有所帮助:

在GitHub上正在进行的讨论关于引入MODULE_INITIALIZER在模块初始化后会调用它，这将解决这些限制.

There is an ongoing discussion on GitHub about introducing a MODULE_INITIALIZER that gets called after module initialization, which would solve these limitations.

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