What if them is `undefined`? You'll get an exception when usually you just want `undefined` as the answer. As a side note, Ember.js has a nice method for this

What if them is `undefined`? You'll get an exception when usually you just want `undefined` as the answer. As a side note, Ember.js has a nice method for this built in, that works on plain old Javascript objects as well as the heavier Ember ones: Em.get(obj, 'user.them.public_keys.primary.bundle')