Error: Reference.child failed: First argument was an invalid path

Question

I have this small app with Firebase and i\'m implementing CRUD operations. The issue comes when I have to delete a post. I get this error: Error: Reference.child failed: F

Answer 1

@Frank van Puffelen snapshotChances() was the solution. This methods returns the id from the node to delete in firebase. So, in the service, I get the reviews like this:

getReviews() {
    return this.db.list('/reviews').snapshotChanges();
  }

And the HTML should be

 <button (click)="delete(r.key)" class="btn btn-danger">Delete</button>

And back in the service, the delete method:

deleteReview(id: any) {
    console.log(id)
    this.db.object('reviews/' + id).remove();
  }

Answer 2

You seem to be changing the meaning of p from post to an id. Assuming that each post has an id property, you probably want:

delete(post) {
  this.postService.deletePost(post.id)
}