I am facing an issue. There is a method in component A that I want to call in component B from the constructor. Here is an example:
export class A {
methodA() {
do something;
}
}
export class B {
constructor(private a:A){}
methodB() {
this.a.methodA();
}
}
However, I am encountering the following problem:
Can't resolve all parameters for CategoryComponentComponent Interaction in Angular is crucial for effective communication between two components.
To simplify:
To ensure that your A component is properly connected to your B component's provider, you must include it in the list of providers for class B:
import {A} from 'path/to/A.component';
// other imports
@Component({
selector: 'b-component',
templateUrl: './b.component.html',
providers: [A] // don't forget to add this
})
export class B implements OnInit {
constructor(private a: A) {
}
// Avoid putting logic in the constructor
ngOnInit() {
this.methodB();
}
methodB() {
this.a.methodA();
}
}
Remember, it is recommended not to have any complex logic within the constructor. Consider using methods like ngOnInit or ngAfterViewInit instead.
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