app.js

App = Ember.Application.create();

App.ApplicationAdapter = DS.LSAdapter.extend({
  namespace: 'lendly'
});


App.Router.map(function() {
  this.resource('index', { path: '/' }, function() {
    this.resource('item', { path: '/:item_id'}),
    this.resource('new', { path: '/new'})
  });
});

App.IndexRoute = Ember.Route.extend({
  model: function() {
    return this.store.find('item');
  }
});

App.ItemRoute = Ember.Route.extend({
  model: function(params) {
    return this.get('store').find('item', params.item_id);
  }
});

App.ItemController = Ember.ObjectController.extend({
  actions: {
    deleteItem: function() {
      var item = this.get('model');
      item.deleteRecord();
      item.save();
      this.transitionToRoute('index');
    }
  }
});

App.NewController = Ember.ArrayController.extend({
  actions: {
    createItem: function() {
      App.Utils.saveAndClearModel.call(this, 'item', ['title', 'lentTo', 'notes' ]);
      this.transitionToRoute('item', item);
    }
  }
});

App.Item = DS.Model.extend({
  title: DS.attr('string'),
  lentTo: DS.attr('string'),
  notes: DS.attr('string'),
  isReturned: DS.attr('boolean')
});


App.Utils = {
  saveAndClearModel: function(recordName, properties) {
    var self = this;
    // create an object with all properties
    var props = properties.reduce(function(obj, prop) {
      obj[prop] = self.get(prop);
      return obj;
    }, {});

    var record = this.store.createRecord(recordName, props);
    record.save()

    // clear all properties
    properties.forEach(function(prop) {
      self.set(prop, '');
    });

    return record;
  }
};