Inheriting Angular Components without a template defined in the parent class

Looking to create a base class that contains common logic in order to inherit it and create various components. After researching online, I came across two approaches:

  1. Utilize the base class as a Pure TypeScript class and apply the @Component decorator in the inherited components.
  2. Implement the base class with @Component using an empty template, and also apply @Component in the inherited components.

Any guidance on the correct method to accomplish this would be greatly appreciated.

Answer №1

If you need to achieve this, there are multiple approaches you can take depending on your specific scenario. One simple way is to create a base component class with a constructor where you can pass dependencies from the inheriting classes using the super call, like so:

export class BaseComponent {
    constructor(modal: ModalService) {
    }
    
    /*
        Add shared code and logic here that will be inherited by other components
     */
}

To implement this in your component, you can extend the base class and inject the modal service in the child class while passing it to the base class:

import {Component, OnInit} from '@angular/core';
import {BaseComponent} from './base.component';
@Component({
    selector: 'app-child',
    templateUrl: './child.component.html',
    styleUrls: ['./child.component.scss'],
})
export class ChildComponent extends BaseComponent implements OnInit {
    constructor(modal: ModalService) {
        super(modal)
    }
}

Additionally, you can use the @Component Angular decorator to mark your base component, providing an empty template to ensure its life cycle is observed properly.

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