Angular: How to use shared modules in a Dynamic Component?

Question

I'm creating dynamic component in Angular v6 using compileModuleAndAllComponentsAsync of angular compiler with same below code.

viewChangeMethod(view: string) {
    let template = `<span>${view} </span>`;
    const tmpCmp = Component({ template: template })(class { });
    this._compiler.clearCacheFor(this.tmpModule)
    this.tmpModule = NgModule({ declarations: [tmpCmp,FRAComponent],import:[ComonModule] })(class {
    });

    this._compiler.compileModuleAndAllComponentsAsync(this.tmpModule)
        .then((factories) => {
            const f = factories.componentFactories[0];
            const cmpRef = f.create(this._injector, [], null, this._m);
            this._container.detach()
            console.log(cmpRef.hostView)
            this._container.insert(cmpRef.hostView);
        })
    this._compiler.clearCacheFor(this.tmpModule)
}

Every thing is working fine but when importing any shared module or custom module below error.

Answer 1

If you will be requiring shared modules or any additional modules for you Dynamic Component I recommend you take a slightly different approach to creating you Dynamic Component.

My projects use dynamic components and I also import various modules into them, but I've used the following approach to creating my components - Full working StackBlitz

Above is a StackBlitz example I created if you want to adjust that to your needs || below is a copy of the code.

import {
  Component, ViewChild, AfterContentInit, ComponentFactoryResolver,
  Compiler, ViewContainerRef, NgModule, NgModuleRef
} from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';

@Component({
  selector: 'app',
  template: '<ng-template #vc></ng-template>',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements AfterContentInit {
  @ViewChild('vc', { read: ViewContainerRef }) _container: ViewContainerRef;
  private cmpRef;

  constructor(
    private componentFactoryResolver: ComponentFactoryResolver,
    private compiler: Compiler,
    private _m: NgModuleRef<any>) { }


  ngAfterContentInit() {
    this.addComponent();
  }

  public sayHello(): void{
    alert("Hello!");
  }

  private addComponent(): void {
    @Component({
      template: `<h2>This is a dynamic component</h2>
      <button (click)="_parent.sayHello()">Click me!</button>`
    })
    class DynamicComponent {
      constructor(public _parent: AppComponent) { }
    }
    @NgModule({
      imports: [
        BrowserModule
      ],
      declarations: [DynamicComponent],
    }) class DynamicModule { }

    const mod = this.compiler.compileModuleAndAllComponentsSync(DynamicModule);
    const factory = mod.componentFactories.find((comp) =>
      comp.componentType === DynamicComponent
    );
    this.cmpRef = this._container.createComponent(factory);
  }

}