Ember.Resource::find

Ember.Resource.find.js

var pathToObject = function(path) {
  var i, parent, part, parts, _len;

  parent = window;
  parts = path.split('.');

  for (i = 0, _len = parts.length; i < _len; i++) {
    part = parts[i];
    parent = parent[part] || (parent[part] = {});
  }

  return parent;
};

Ember.Resource.reopenClass({
  find: function(resourceId) {
    var controller, resource;

    resourceIdField = this.resourceIdField || 'id';

    /* This needs to be set after you define the model class.
     * App.Post = Em.Resource.extend({});
     *
     * App.Post.reopenClass({
     *   controller: 'App.store.posts'
     * });
     */

    controller = pathToObject(this.controller);
    resource = controller.findProperty(resourceIdField, resourceId);

    if (!resource) {
      resource = this.create();
      resource[resourceIdField] = resourceId;
      resource.findResource();
      controller.pushObject(resource);
    }

    return resource;
  }
});

example.js

window.App = Em.Application.create();

App.Post = Em.Resource.extend({
  resourceUrl: '/',
  resourceName: 'post'
});

App.store = {};
App.store.posts = Em.ResourceController.create({
  resourceType: App.Post,
  content: []
});

App.Post.reopenClass({
  controller: 'App.store.posts'
});

console.log(App.Post.find(1)); // returns instance of App.Post, fetches from server if necessary

// Custom primary key:

App.Organism.reopenClass({
  controller: 'App.store.organisms',
  resourceIdField: 'genus'
});