Can Angular components be dynamically rendered using Selectors?

Question

Can Angular components be dynamically rendered using Selectors?

`Is it possible to dynamically render an Angular component? I have the component selector names stored in my .ts file. However, when attempting to bind the variable in the .html file using interpolation and innerHTML, the component fails to render. What can be done to achieve this?

Here is the structure of my component selectors:

<app-assessmentitem>
  <app-responsedeclaration>
    <app-correct-response>
    </app-correct-response>
  </app-responsedeclaration>
</app-assessmentitem>

I am looking for a way to dynamically render Angular components using Selectors.`

angular typescript angular-components angular2-directives

Answer 1

Answer №1

A great way to achieve this is by using NgComponentOutlet. Check out the documentation here for more information.

All you need to do is pass your component's type to the NgComponentOutlet:

@Component({selector: 'hello-world', template: 'Hello World!'})
export class HelloWorld {}

@Component({
  selector: 'ng-component-outlet-simple-example',
  template: `<ng-container *ngComponentOutlet="HelloWorld"></ng-container>`,
})
export class NgComponentOutletSimpleExample {
  // Ensure HelloWorld is accessible in the template.
  HelloWorld = HelloWorld;
}

If you prefer to use selector names, you can create a mapping function like this:

@Component({
  selector: 'ng-component-outlet-simple-example',
  template: `<ng-container *ngComponentOutlet="mapComponentSelectorToComponentType("hello-world")"></ng-container>`,
})
export class NgComponentOutletSimpleExample {

  public mapComponentSelectorToComponentType(selector: string) {
    switch (selector) {
      case 'hello-world':
      return HelloWorld;
      <...add other components you want to handle in a similar manner>
    }
}

Answer 2

A great way to achieve this is by using NgComponentOutlet. Check out the documentation here for more information.

All you need to do is pass your component's type to the NgComponentOutlet:

@Component({selector: 'hello-world', template: 'Hello World!'})
export class HelloWorld {}

@Component({
  selector: 'ng-component-outlet-simple-example',
  template: `<ng-container *ngComponentOutlet="HelloWorld"></ng-container>`,
})
export class NgComponentOutletSimpleExample {
  // Ensure HelloWorld is accessible in the template.
  HelloWorld = HelloWorld;
}

If you prefer to use selector names, you can create a mapping function like this:

@Component({
  selector: 'ng-component-outlet-simple-example',
  template: `<ng-container *ngComponentOutlet="mapComponentSelectorToComponentType("hello-world")"></ng-container>`,
})
export class NgComponentOutletSimpleExample {

  public mapComponentSelectorToComponentType(selector: string) {
    switch (selector) {
      case 'hello-world':
      return HelloWorld;
      <...add other components you want to handle in a similar manner>
    }
}

Can Angular components be dynamically rendered using Selectors?

Answer №1

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