According to the documentation:
http://emberjs.com/guides/ember-data-lifecycle/
Ember data will automatically look to the persistent layer for a record if it’s not loaded, how do I only find or even findAll records that have been loaded?
Aside from creating a non-persistent list of loaded records, and look for the record there?
You can do this via a filter:
This will keep an up-to-date Array of only the
App.Postrecords that have been loaded. When new records are loaded, it will automatically update (and update any DOM that is bound to it).