CanActivateGuardUsingDecoratorMD.ts

    canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> | Promise<boolean> | boolean {
        if (route.component && route.data) {
            let permissions = route.component[ACTIVATE_FIELD_NAME] as ActivateMetadata;
            if (permissions) {
                return this.securityService.userHasPermissions(permissions)
                    .map(hasAccess => {
                        if (hasAccess) {
                            return true;
                        }
                        else {
                            this.router.navigate(['/unauthorized'], {replaceUrl: true})
                        }
                    })
            }

        }
        return true;
    }