Hello,
I just went though an Angular course and the example there is using a
subject inside a function, which returns an observable.
For the example the firebase api is used and that works nice.
Now I rebuild that with my own api, using ng2-webstorage.
This works like the example with the menubar, but it throws off the router
when called with CanActivate in a guard.
The code inside my AuthService looks like that:
isAuthenticated() {
const state = new Subject<boolean>();
this.localStorageService.observe('myToken')
.subscribe((newToken: MyToken) => {
if ((newToken !== null) && (newToken.token !== '')) {
state.next(true);
} else {
state.next(false);
}
});
return state.asObservable();
}
the code in the example looks like that:
isAuthenticated() {
const state = new Subject<boolean>();
firebase.auth().onAuthStateChanged(function(user) {
if (user) {
state.next(true);
} else {
state.next(false);
}
});
return state.asObservable();
}
the menubar I mentioned before subscribes to isAuthentificated in its
constructor and that works as expected.
the rooter guard looks like that in both cases:
canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
return this.authService.isAuthenticated().first();
}
as I said before, the example is working fine, but with my
isAuthentificated version the router ends up in an endless loop, bcause the
function always returns a null observeable.
I posted that already on stackoverflow
<http://stackoverflow.com/questions/43960678/angularjs-and-rxjs-subject-headache-with-canactivate>,
but didn't receive any answer, which would explain this different behaviour
to me.
So I hope noone gets upset here about crossposting, in case I apologize,
I'd just really like to understand what's going on here or better to say
why I always get a null observeable back.
Thanks
mat
As I'm
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