I am trying to implement canActivate for user routes, before that I want to check whether the access token is still valid or not. Therefore I implement something like this
export class AuthGuard implements CanActivate {
data:Array<Object>;
constructor(private base: BaseService){}
canActivate(
next: ActivatedRouteSnapshot,
state: RouterStateSnapshot): boolean {
var session: any = { token: localStorage.getItem('abc') };
this.base.valid(session).subscribe(result => {
this.data=result;
console.log(this.data); <-- first
});
console.log(this.data); <-- second
return true;
}
}
here I can get the data variable inside the subscribe method when I console it but outside this method is give undefined
value. How can I access it outside the method.
That won't be possible. The reason being, you are trying to render a value whose value is continuously changed by Observable.
Now, when you are trying to read outside
console.log, you get undefined as the value is yet to be set by Observable streams
. when the value is changed (let's say after 1 sec ), the outer
console.log has already been executed and so you won't see any changes of the this.data
For monitoring the change in its value, put the function call in the subscribe
block itself.
As per your comment, You can refer this link