Can't combine startAt(), endAt()…

I’m trying to find the last couple of records (tracks from a playlist) using this code:

return this.store.find('track', {
  orderBy: 'playlist',
  equalTo: '-J_somefirebaseid'
});

… but I get the following error:

Error while processing route: channel.index.index Query: Can’t combine startAt(), endAt(), and limit(). Use limitToFirst() or limitToLast() instead.

Error: Query: Can’t combine startAt(), endAt(), and limit(). Use limitToFirst() or limitToLast() instead.

Doing playlist.get('tracks') works, but I don’t want to load ALL those tracks. Only the last ten.

I’m on Ember 1.11.0, Ember Data 1.0.0-beta.16.1 and EmberFire 1.4.4.

[tstirrat]

Thats a good question. You could get the hasMany relationship array and then .filter it on the client side.

But, I know you’re really asking about doing it via server call. There isn’t a way that I know of off the top of my head.

Even if we got realtime updates via findQuery as requested in #235, this would still not allow equalTo + limitToX …

I wonder, for advanced situations if you could create a ref on the hasMany key for the model and when a child changes you can update the array manually… something like this (might need some adjustment):

var adapter = this.store.adapterFor('playlist');
adapter._geRef('playlist').child(model.id).child('tracks')
  .orderByKey()
  .limitToLast(5)
  .on('value', (snapshot) => {
    var ids = Object.keys(snapshot.val());
    var requests = ids.map((id) => {
      return this.store.find('track', id);
    });
    Ember.RSVP.all(requests).then((tracks) => {
      this.set('last5Tracks', tracks); // might need an Ember.run wrap
    });
  });

[xe4me]

I’ve been finding the “filter it in the client” answer in different places, This is the most retarded answer ever. Download the whole database,and the filter it on the client , thank you very much>