Utilizing Angular Components Across Various Layers: A Guide

Question

Utilizing Angular Components Across Various Layers: A Guide

Consider the following component structure:

app1
-- app1.component.html
-- app1.component.ts

parent1
    parent2
        app2
        -- app2.component.html
        -- app2.component.ts

Is it possible to efficiently reuse the app2 component within the app1? This would involve reusing a table - both HTML and TypeScript logic - without resorting to copying and pasting code.

I have explored solutions such as ng-template, but have not found success. Attempting to call the tag directly has also proven unsuccessful.

javascript angular typescript

Answer 1

Answer №1

If the tag isn't functioning within app1, it's likely that you're importing the app2 component into another module. To use the component across multiple modules, import app2 ONLY in the shared module and then import that module into any modules where you want to access that component.

Ensure that you export the component within the shared module as well.

Answer 2

If the tag isn't functioning within app1, it's likely that you're importing the app2 component into another module. To use the component across multiple modules, import app2 ONLY in the shared module and then import that module into any modules where you want to access that component.

Ensure that you export the component within the shared module as well.

Answer 3

Answer №2

To dynamically load components in Angular, consider using componentFactoryResolver. Check out the documentation here: https://angular.io/guide/dynamic-component-loader For instance, let's say you want to incorporate ThirdComponent within FirstComponent:

//HTML
<section #firstComp></section>

//TS
import { AfterViewInit, Component, ComponentFactoryResolver, OnInit, ViewChild, ViewContainerRef } from '@angular/core';
import { ThirdComponent } from '../third/third.component';

@Component({
  selector: 'app-first',
  templateUrl: './first.component.html',
  styleUrls: ['./first.component.scss']
})
export class FirstComponent implements OnInit, AfterViewInit {
  @ViewChild('firstComp',{read: ViewContainerRef}) firstComp: ViewContainerRef;

  constructor(
    private componentFactoryResolver: ComponentFactoryResolver
  ) { }

  ngOnInit(): void {    

  }

ngAfterViewInit() {
  const componentFactory = this.componentFactoryResolver.resolveComponentFactory(ThirdComponent);
  const componentRef = this.firstComp.createComponent<ThirdComponent>(componentFactory);
}
}

Answer 4

To dynamically load components in Angular, consider using componentFactoryResolver. Check out the documentation here: https://angular.io/guide/dynamic-component-loader For instance, let's say you want to incorporate ThirdComponent within FirstComponent:

//HTML
<section #firstComp></section>

//TS
import { AfterViewInit, Component, ComponentFactoryResolver, OnInit, ViewChild, ViewContainerRef } from '@angular/core';
import { ThirdComponent } from '../third/third.component';

@Component({
  selector: 'app-first',
  templateUrl: './first.component.html',
  styleUrls: ['./first.component.scss']
})
export class FirstComponent implements OnInit, AfterViewInit {
  @ViewChild('firstComp',{read: ViewContainerRef}) firstComp: ViewContainerRef;

  constructor(
    private componentFactoryResolver: ComponentFactoryResolver
  ) { }

  ngOnInit(): void {    

  }

ngAfterViewInit() {
  const componentFactory = this.componentFactoryResolver.resolveComponentFactory(ThirdComponent);
  const componentRef = this.firstComp.createComponent<ThirdComponent>(componentFactory);
}
}

Utilizing Angular Components Across Various Layers: A Guide

Answer №1

Answer №2

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