TypeError: self.parent.parent.parent.context is not a Angular 2 function

Question

I created this function to save my taches

sauverTache(tache:Tache){

    this.editionEnCours = true;
    tache.estReelle = true;

    this.sauverTache.emit(tache.id);
}

I call my function in the template as follows

<div class="sbold tr" *ngFor="let tache of etapes.P0.taches, let i=index" [class.hidden]="!afficheTaches" >
                                        <td  align="right">{{tache.typeTache}}&nbsp;</td>
                                        <td>
                                            <div>
                                               <p-calendar [(ngModel)]="etapes.P0.taches[i].dateTache"  showAnim="slideDown" [class.hidden]="!editP0[i]" dateFormat="dd/mm/yy" placeholder="jj/mm/aaaa"></p-calendar>
                                                <div class="btn btn-circle btn-default font-yellow-saffron" *ngIf="!editP0[i]" (click)="editP0[i]=!editP0[i]">
                                                    <i class="fa fa-pencil "> </i>
                                                </div>
                                                <div class="btn btn-circle btn-default font-green-jungle" *ngIf="editP0[i]" (click)="editP0[i]=!editP0[i]; sauverTache(etapes.P0.taches[i]);">
                                                    <i class="fa fa-check "> </i>
                                                </div>
                                                <div class="btn btn-circle btn-default font-red" *ngIf="editP0[i]" (click)="editP0[i]=!editP0[i]; reset();">
                                                    <i class="fa fa-remove "> </i>
                                                </div>
                                            </div>
                                        </td>
  </div>

and i got this error

TypeError: self.parent.parent.parent.context.sauverTache is not a function

Answer 1

The way to get the argument emitted by the event is through the keyword : $event

//(click)="edit=!edit; sauverTache(myTache);"
(click)="edit=!edit; sauverTache($event);"

If you need a parameter coming from some iterated array, you can pass it as well

<div *ngFor="let myTache of Taches">
  ...
  <div class="btn btn-circle btn-default font-green-jungle" 
     *ngIf="edit" (click)="edit=!edit; sauverTache(myTache);">
   <i class="fa fa-check "> </i>
  </div>
  ...
</div>

And in case we need some kind of customization from our component class, we can also

class MyComponent {
    public myTache: number;
    ngOnInit() {
       this.myTache = 1;
    }
}

and now we can ask for this to be transmitted as in the original fragment

(click)="edit=!edit; sauverTache(myTache);

myTache ( ngFor) . - $event

- sauverTache, . EventEmitter:

  sauverTacheObservable = new EventEmitter();

  sauverTache(tache: Tache){

    this.editionEnCours = true;
    tache.estReelle = true;

    // this is self calling.. and causing problem...
    // this method does not have method emit
    //this.sauverTache.emit(tache.id);

    // but now, we call proper emitter
    this.sauverTacheObservable.emit(tache.id);
    console.log(tache.id);
  }