angular2 call function of parent component

Question

I have an app where I have an upload component where I can upload a file. It is embedded in the body.component.

On upload, it should use a function (e.g.

Answer 1

You can inject the parent component to the child component.

For more details see
- How do I inject a parent component into a child component?
- Angular 2 child component refers to parent component This way you can ensure that thefunction() is only called when parent is a body.component.

constructor(@Host() bodyComp: BodyComponent) {

Otherwise using @Output() is preferred to communicate from child to parent.