Question

app
 |-plugins
       |-plugin1
           |-config.json
           |-plugin1.module.ts
           |-plugin1.component.ts

       |-plugin2
           |-config.json
           |-plugin2.module.ts
           |-plugin2.component.ts

如上所示，我有 “app / plugins” 文件夹，其中包含插件。每个插件将包含一个“config.json”文件，该文件将告诉一些配置，包括 -

{
   path: "feature1",
   moduleFile: "feature1.module",
   moduleClassName: "Feature1Module"
}

所以我想要的是，在应用程序引导之前，它将扫描 “app / plugins” 文件夹并加载所有插件配置，并懒惰地注册所有模块路由。对于上面的例子，路线将是

{
     path: "feature1",
     loadChildren: "app/plugins/plugin1/plugin1.module#Plugin1Module"
}

这样，我们可以将新插件放入插件文件夹并刷新应用程序，我们新删除的插件已启动并运行。

任何人都知道如何实现这一目标？

注意：我在angular2 latest（2.1.0）

Answer 1

I'm looking for the same behavior than the one you're describing and I think I've found how to do it, thanks to this github issue : Lazy loading components without Route

Here is the code I've written to do it : plunker here

First : dynamic.module.ts, the dynamically loaded module and its component

import { Component, NgModule } from '@angular/core'

@Component({
    selector: 'my-test',
    template: `<h1>html template of TestComponent from DynamicModule</h1>`
})

export class TestComponent { }

@NgModule({
    declarations: [TestComponent],
    exports: [TestComponent]
})

export class DynamicModule { }

Second : here is the component which dynamically loads module when you give it the module path.

import {
Component, 
ViewContainerRef,
Compiler,
ComponentFactory,
ComponentFactoryResolver,
ModuleWithComponentFactories,
ComponentRef,
ReflectiveInjector,
SystemJsNgModuleLoader } from '@angular/core';

class ModuleNode {
    modulePath: string;
    componentName: string;
}

@Component({
    moduleId: module.id,
    selector: 'widgetContainer',
    templateUrl: './widgetContainer.component.html'
})

export class WidgetContainerComponent {
    widgetConfig: string;
    module: ModuleNode;
    cmpRef: ComponentRef<any>;

constructor(private widgetService: WidgetLoader,
    private viewref: ViewContainerRef,
    private resolver: ComponentFactoryResolver,
    private loader: SystemJsNgModuleLoader,
    private compiler: Compiler){}

openWebApp(menu:any) {
    this.loader.load(menu.modulePath)  // load the module and its components
        .then((modFac) => {
            // the missing step, need to use Compiler to resolve the module's embedded components
            this.compiler.compileModuleAndAllComponentsAsync<any>(modFac.moduleType)

                .then((factory: ModuleWithComponentFactories<any>) => {
                    return factory.componentFactories.find(x => x.componentType.name === menu.componentName);
                })
                .then(cmpFactory => {

                    // need to instantiate the Module so we can use it as the provider for the new component
                    let modRef = modFac.create(this.viewref.parentInjector);
                    this.cmpRef = this.viewref.createComponent(cmpFactory, 0, modRef.injector);
                    // done, now Module and main Component are known to NG2

                });
        });
}

ngOnDestroy() {
    if (this.cmpRef) {
        this.cmpRef.destroy();
    }
}

}

What do you think about that? Does it help? Thanks a lot for your feedback.

Angular2：从给定文件夹动态加载模块

1 个答案: