无法在loadChildren后的子路由中使用nz组件

[HereWeR]

I'm submitting a...

[ ] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Regression (a behavior that used to work and stopped working in a new release)
[ x ] Support request => Please do not submit support request here

Current behavior

在配置好路由RouterModule.forRoot(appRouters)后，通过{path: 'main', loadChildren: './main/main.module#MainModule'}懒加载之后的模块无法使用nz组件，
报错为：ERROR Error: Uncaught (in promise): Error: Template parse errors:
'nz-dropdown' is not a known element:

1. If 'nz-dropdown' is an Angular component, then verify that it is part of this module.
2. If 'nz-dropdown' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("
   
   
   
   [ERROR ->]
   more </"): ng:///ItemsModule/TodoComponent.html@29:4
   Error: Template parse errors:
   'nz-dropdown' is not a known element:
3. If 'nz-dropdown' is an Angular component, then verify that it is part of this module.
4. If 'nz-dropdown' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.

Expected behavior

希望支持下级module引用

Minimal reproduction of the problem with instructions

{path: '', redirectTo: 'main', pathMatch: 'full'},
{path: 'main', loadChildren: './main/main.module#MainModule'},
{path: 'setting', loadChildren: './setting/setting.module#SettingModule'},

import： BrowserAnimationsModule,
NgZorroAntdModule.forRoot(),
RouterModule.forRoot(appRouters)

What is the motivation / use case for changing the behavior?

最后一个module需要再次import引用NgZorroAntdModule，无法实现“在根 module 中使用 NgZorroAntdModule.forRoot()，在子 module 中使用 NgZorroAntdModule 即可”，望提供解决方案

Environment

angular-cli：“1.3.0”
ng-zorro-antd: "^0.5.0-rc.2"

Angular version: X.Y.Z

ng-zorro-antd version: X.Y.Z

Browser:
- [ x ] Chrome (desktop) version 59.0
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] IE version XX
 
For Tooling issues:
- Node version: XX  
- Platform:  

Others:

[vthinkxie]

You have to import NgZorroAntdModule in your sub module and it is the design of Angular, you may misunderstand the doc.
We will change the doc next version.
thanks for your feedback.

[cipchk]

推荐比较合理的做法是在 SharedModule 中导入 NgZorroAntdModule 并导出。

[lock]

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