Adding "Authorization" header in get request

@niallr you're totally right friend, the error was in my home.ts look

`
getData() {
this.service.getCauses()
.subscribe(
data => this.causes = data, <----- here is the problem
err => console.log(err)
);
}

I added someone, look

getData() {
this.service.getCauses()
.subscribe(
data => this.causes = data.causas, <----- here is the solution
err => console.log(err)
);
}

in my home.ts normally

{{ cause.name }}

`

now I would like to guard the user loggedin for example, edit profile yourself, how to make ?