Make RESTAdapter#findAll use record.constructor.collectionKey only wh…

…en present

packages/ember-model/lib/rest_adapter.js

@@ -17,12 +17,9 @@ Ember.RESTAdapter = Ember.Adapter.extend({
     var url = this.buildURL(klass),
         collectionKey = klass.collectionKey;
 
-    if (!collectionKey) {
-      throw new Error('Ember.RESTAdapter requires a `collectionKey` property to be specified');
-    }
-
     return this.ajax(url).then(function(data) {
-      Ember.run(records, records.load, klass, data[collectionKey]);
+      var dataToLoad = collectionKey ? data[collectionKey] : data;
+      Ember.run(records, records.load, klass, dataToLoad);
     });
   },
 

packages/ember-model/tests/adapter/rest_adapter_test.js

@@ -44,16 +44,6 @@ module("Ember.RESTAdapter - with a url specified", {
   }
 });
 
-test("findAll throws an error if collectionKey isn't specified", function() {
-  expect(1);
-
-  RESTModel.collectionKey = null;
-
-  throws(function() {
-    Ember.run(RESTModel, RESTModel.find);
-  }, /requires a `collectionKey` property to be specified/);
-});
-
 test("findAll", function() {
   expect(3);
 
@@ -66,6 +56,50 @@ test("findAll", function() {
   Ember.run(RESTModel, RESTModel.find);
 });
 
+test("findAll loads the full JSON payload when collectionKey isn't specified", function() {
+  expect(1);
+
+  var data = [
+        {id: 1, name: 'Erik'},
+        {id: 2, name: 'Aaron'}
+      ],
+      records;
+      RESTModel.collectionKey = undefined;
+
+  adapter._ajax = function(url, params, method) {
+    return ajaxSuccess(data);
+  };
+
+  Ember.run(function() {
+    records = RESTModel.findAll();
+  });
+
+  equal(records.get('length'), data.length, "The proper number of items should have been loaded.");
+});
+
+test("findAll loads the proper JSON payload subset when collectionKey is specified", function() {
+  expect(1);
+
+  var data = {
+        posts: [
+          {id: 1, name: 'Erik'},
+          {id: 2, name: 'Aaron'}
+        ]
+      },
+      records;
+      RESTModel.collectionKey = "posts";
+
+  adapter._ajax = function(url, params, method) {
+    return ajaxSuccess(data);
+  };
+
+  Ember.run(function() {
+    records = RESTModel.findAll();
+  });
+
+  equal(records.get('length'), data.posts.length, "The proper number of items should have been loaded.");
+});
+
 test("findById", function() {
   expect(4);