decide.nolog.cz/app/routes/poll.js

import Ember from "ember";

export default Ember.Route.extend({  
  actions: {
    error: function(error) {
      if (error && error.status === 404) {
        return this.transitionTo('404');
      }
      
      return true;
    }
  },

  model: function(params) {
    // get encryption key from query parameter in singleton
    // before it's used by serializer to decrypt payload
    this.set('encryption.key', params.encryptionKey);
    
    return this.store.find('poll', params.poll_id);
  }
});