Observer not assigned on create












1















I am doing this in code in order to handle multiple views from multiple components



https://stackblitz.com/edit/angular-cy8jza?file=src/app/app.service.ts (check the console for the error)



export class ViewGroup {
_onViewChanged: any;
OnViewChanged$ : Observable<any>;
_onViewAdded: any;
OnViewAdded$ : Observable<any>;
_onViewRemoved: any;
OnViewRemoved$ : Observable<any>;

viewsSet = new Set<string>();
currentView = "";
previousView = "";

constructor(){
this.OnViewChanged$ = Observable.create(obs => this._onViewChanged = obs);
this.OnViewAdded$ = Observable.create(obs => this._onViewAdded = obs);
this.OnViewRemoved$ = Observable.create(obs => this._onViewRemoved = obs);
}
}


somnwhere in the code I do



this._availableView.set(name,  new ViewGroup());


and then call



this._availableView.get(group)._onViewAdded.next(view);


but I can't call the next on it, it s say undefined.



It's exactly the same procedure has



this.onGroupAdded$ = Observable.create(e => this._onGroupAdded = e)


but this one work in stackblitz










share|improve this question



























    1















    I am doing this in code in order to handle multiple views from multiple components



    https://stackblitz.com/edit/angular-cy8jza?file=src/app/app.service.ts (check the console for the error)



    export class ViewGroup {
    _onViewChanged: any;
    OnViewChanged$ : Observable<any>;
    _onViewAdded: any;
    OnViewAdded$ : Observable<any>;
    _onViewRemoved: any;
    OnViewRemoved$ : Observable<any>;

    viewsSet = new Set<string>();
    currentView = "";
    previousView = "";

    constructor(){
    this.OnViewChanged$ = Observable.create(obs => this._onViewChanged = obs);
    this.OnViewAdded$ = Observable.create(obs => this._onViewAdded = obs);
    this.OnViewRemoved$ = Observable.create(obs => this._onViewRemoved = obs);
    }
    }


    somnwhere in the code I do



    this._availableView.set(name,  new ViewGroup());


    and then call



    this._availableView.get(group)._onViewAdded.next(view);


    but I can't call the next on it, it s say undefined.



    It's exactly the same procedure has



    this.onGroupAdded$ = Observable.create(e => this._onGroupAdded = e)


    but this one work in stackblitz










    share|improve this question

























      1












      1








      1








      I am doing this in code in order to handle multiple views from multiple components



      https://stackblitz.com/edit/angular-cy8jza?file=src/app/app.service.ts (check the console for the error)



      export class ViewGroup {
      _onViewChanged: any;
      OnViewChanged$ : Observable<any>;
      _onViewAdded: any;
      OnViewAdded$ : Observable<any>;
      _onViewRemoved: any;
      OnViewRemoved$ : Observable<any>;

      viewsSet = new Set<string>();
      currentView = "";
      previousView = "";

      constructor(){
      this.OnViewChanged$ = Observable.create(obs => this._onViewChanged = obs);
      this.OnViewAdded$ = Observable.create(obs => this._onViewAdded = obs);
      this.OnViewRemoved$ = Observable.create(obs => this._onViewRemoved = obs);
      }
      }


      somnwhere in the code I do



      this._availableView.set(name,  new ViewGroup());


      and then call



      this._availableView.get(group)._onViewAdded.next(view);


      but I can't call the next on it, it s say undefined.



      It's exactly the same procedure has



      this.onGroupAdded$ = Observable.create(e => this._onGroupAdded = e)


      but this one work in stackblitz










      share|improve this question














      I am doing this in code in order to handle multiple views from multiple components



      https://stackblitz.com/edit/angular-cy8jza?file=src/app/app.service.ts (check the console for the error)



      export class ViewGroup {
      _onViewChanged: any;
      OnViewChanged$ : Observable<any>;
      _onViewAdded: any;
      OnViewAdded$ : Observable<any>;
      _onViewRemoved: any;
      OnViewRemoved$ : Observable<any>;

      viewsSet = new Set<string>();
      currentView = "";
      previousView = "";

      constructor(){
      this.OnViewChanged$ = Observable.create(obs => this._onViewChanged = obs);
      this.OnViewAdded$ = Observable.create(obs => this._onViewAdded = obs);
      this.OnViewRemoved$ = Observable.create(obs => this._onViewRemoved = obs);
      }
      }


      somnwhere in the code I do



      this._availableView.set(name,  new ViewGroup());


      and then call



      this._availableView.get(group)._onViewAdded.next(view);


      but I can't call the next on it, it s say undefined.



      It's exactly the same procedure has



      this.onGroupAdded$ = Observable.create(e => this._onGroupAdded = e)


      but this one work in stackblitz







      angular rxjs observable






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 '18 at 3:04









      BobbyBobby

      11910




      11910
























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