How can I use/create dynamic template to compile dynamic Component with Angular 2.0?

Question

I want to dynamically create a template. This should be used to build a ComponentType at runtime and place (even replace) it somewhere inside of the ho

Answer 1

Building on top of the answer by Ophir Stern, here is a variant which works with AoT in Angular 4. The only issue I have is I cant inject any services into the DynamicComponent, but I can live with that.

note: I haven't tested with Angular 5.

import { Component, OnInit, Input, NgModule, NgModuleFactory, Compiler, EventEmitter, Output } from '@angular/core';
import { JitCompilerFactory } from '@angular/compiler';

export function createJitCompiler() {
  return new JitCompilerFactory([{
    useDebug: false,
    useJit: true
  }]).createCompiler();
}

type Bindings = {
  [key: string]: any;
};

@Component({
  selector: 'app-compile',
  template: `
    

      
      
    
  `,
  styleUrls: ['./compile.component.scss'],
  providers: [{provide: Compiler, useFactory: createJitCompiler}]
})
export class CompileComponent implements OnInit {

  public dynamicComponent: any;
  public dynamicModule: NgModuleFactory;

  @Input()
  public bindings: Bindings = {};
  @Input()
  public template: string = '';

  constructor(private compiler: Compiler) { }

  public ngOnInit() {

    try {
      this.loadDynamicContent();
    } catch (err) {
      console.log('Error during template parsing: ', err);
    }

  }

  private loadDynamicContent(): void {

    this.dynamicComponent = this.createNewComponent(this.template, this.bindings);
    this.dynamicModule = this.compiler.compileModuleSync(this.createComponentModule(this.dynamicComponent));

  }

  private createComponentModule(componentType: any): any {

    const runtimeComponentModule = NgModule({
      imports: [],
      declarations: [
        componentType
      ],
      entryComponents: [componentType]
    })(class RuntimeComponentModule { });

    return runtimeComponentModule;

  }

  private createNewComponent(template: string, bindings: Bindings): any {

    const dynamicComponent = Component({
      selector: 'app-dynamic-component',
      template: template
    })(class DynamicComponent implements OnInit {

      public bindings: Bindings;

      constructor() { }

      public ngOnInit() {
        this.bindings = bindings;
      }

    });

    return dynamicComponent;

  }

}

Hope this helps.

Cheers!