constructor(private _nav: NavController, private _af: AngularFire, private _navParams: NavParams) {
   this.charName = this._navParams.get('charName');
   this.charID = this._navParams.get('charID');
   this.dbURL = this._navParams.get('dbURL') + '/' + this.charID + '/sets';
   this.sets = this._af.list(this.dbURL);
   this.selSetFilter = 'incomplete';
 }

 constructor(public af:AngularFire) {
   var ref = new Firebase(rootFirebase);
   ref.remove();
   this.questions = af.list('/questions');
   this.questions.add({question: 'why?'});
   this.questions.add({question: 'how?'});
 }

 constructor(af: AngularFire, store: Store<AppState>) {
   af.list('/events').do(data => {
     store.dispatch({
       type: 'RECEIVED_FROM_EVENTS',
       payload: data,
     });
   }).subscribe();
 }

 constructor(af:AngularFire) {
   this.people = af.list('/people')
     .map(people => {
       return people.map(person => {
         person.todos = af.list(`/todos/${person.$key}`)
         return person;
       });
     })
 }

    af.auth.asObservable().filter(user => user !== null).subscribe(user => { // Skip null values
      this.boardURL = 'users/' + user.uid + '/boards/' + routeParams.get('key');
      this.board = af.object(this.boardURL);
      this.lists = af.list(this.boardURL + '/lists', { query: { orderByChild: 'priority' } });
      this.tasks = af.list(this.boardURL + '/tasks', { query: { orderByChild: 'priority' } });

      this.listObservable = af.list(this.boardURL + '/lists');
      this.taskObservable = af.list(this.boardURL + '/tasks');
    });

 get focusPhases$(): Observable<FocusPhase[] | any[]> {
   if (this.authService.isLoggedIn()) {
     return this.angularFire.list(`/users/${this.authUser.uid}/focusPhases`);
   } else {
     return Observable.of([]);
   }
 }

 this._af.auth.subscribe((data) => {
     if (data) {
         this.userID = data.uid;
         this.dbURL = "/" + this.userID;
         this.characters = this._af.list(this.dbURL);
     } 
 })

 getAllWorkouts(callback = (workouts) => {}) {
   let sub = this.af.list("/workouts/").subscribe((workouts) => {
     sub.unsubscribe();
     callback(workouts);
     return;
   });
 }

 getAllAssignments(callback = (assignments) => {}) {
   let sub = this.af.list("/assignments/").subscribe((assignments) => {
     sub.unsubscribe();
     callback(assignments);
     return;
   });
 }

        this.af.auth.login({ email: this.rs.genEmail(phone), password: this.password }).then((authData) => {
            //console.log("Rs2:" + authData.uid);
            this.authData = authData;
            //localStorage.setItem('uid', authData.uid);
            this.rs.uid = authData.uid;
            var usersRef = this.af.object("/users/" + this.authData.uid);
            usersRef.update({
                lastlogin: (new Date()).toISOString()
            });

            usersRef.subscribe(res => {
                let role = res.role;
                this.rs.dealer = res.dealername;
                this.rs.role = res.role;
                this.rs.uid = res.uid;
                this.rs.ownerId = res.ownerid;
                this.rs.phone = res.phone;
                this.rs.fname = res.fname;
                this.rs.lname = res.lname;
                //console.log("role:" + role + " getRole:" + this.rs.role);

            }
            );

        }).catch((error) => {