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Elise St Hilaire
Elise St Hilaire
13,358 Points

Angular2 Error: Cannot find a differ supporting object '[object Object]' of type 'object'

I get this error when trying to use a pipe to filter through runners. I'm guessing it has to do with how I subscribed to observables when grabbing the runners from the database.

This is my code in the component where the runners array is defined:

  ngOnInit() {
    this.runnerService.getRunners().subscribe(dataLastEmittedFromObserver => {
      this.runners = dataLastEmittedFromObserver;

      let thisComponent = this;
      this.runners.forEach((runner) => {
        runner = new Runner(

This is where I create the pipe:

  transform(value: any, runnerRole) {
    var filteredRunners= this.af.database.list('runners',{
        orderByChild: 'role',
        equalTo: runnerRole
    return filteredRunners;

And this is where I use it in the HTML:

<div *ngFor="let runner of runners | role: Leader" class="panel panel-default">

  <div class="panel-body">
    <h3 (click)="goToDetailsPage(runner)">{{runner?.name}}</h3>
    <div *ngIf="currentRoute==='/admin'">
      <app-edit-runner [selectedRunner]="runner"></app-edit-runner>