allow a layout to be defined without regions, using underscore v1.4.x. …

…fixes #270

changelog.md

@@ -15,6 +15,16 @@
 * CompositeView
   * **BREAKING:** CompositeView will only render a model in to it's template, instead of a model or collection. It will still render the collection as itemView instances.
 
+* CollectionView / CompositeView
+  * Cleaned up the `getItemViewContainer` code, and improved the error that is thrown when the specified container element is not found
+  * Can attach existing view instance w/ existing DOM element as child of collection view / composite view, in parent's `initialize` function
+
+* Layout
+  * Allow a Layout to be defined without `regions`, using Underscore v1.4.x
+
+* View / ItemView / CompositeView
+  * Removed the `serializeData` method and added directly to `ItemView` and `CompositeView` as needed
+
 * Modules
   * **BREAKING:** Split module definitions can now receive custom args per module definition, instead of sharing / replacing them across all definitions
 
@@ -28,13 +38,6 @@
 * triggerMethod
   * Added `Marionette.triggerMethod` method to trigger an event and call the corresponding method. For example, `view.triggetMethod("before:render")` will trigger the "before:render" event and call the `onBeforeRender` method.
 
-* View / ItemView / CompositeView
-  * Removed the `serializeData` method and added directly to `ItemView` and `CompositeView` as needed
-
-* CollectionView / CompositeView
-  * Cleaned up the `getItemViewContainer` code, and improved the error that is thrown when the specified container element is not found
-  * Can attach existing view instance w/ existing DOM element as child of collection view / composite view, in parent's `initialize` function
-
 * Misc
   * jQuery ($) support now works from global `$` or `window.jQuery`
   * Updated to Underscore.js v1.4.1

spec/javascripts/layout.spec.js

@@ -43,6 +43,20 @@ describe("layout", function(){
 
   });
 
+  describe("on instantiation with no regions defined", function(){
+    var NoRegions = Marionette.Layout.extend({});
+    var layoutManager;
+
+    function init(){
+      layoutManager = new NoRegions();
+    };
+
+    it("should instantiate the specified region managers", function(){
+      expect(init).not.toThrow();
+    });
+
+  });
+
   describe("on instantiation with custom region managers", function() {
     var LayoutManagerCustomRegion = LayoutManager.extend({
       regionType: CustomRegion1,

src/marionette.layout.js

@@ -56,7 +56,8 @@ Marionette.Layout = Marionette.ItemView.extend({
     }
 
     var that = this;
-    _.each(this.regions, function (region, name) {
+    var regions = this.regions || {};
+    _.each(regions, function (region, name) {
 
       var regionManager = Marionette.Region.buildRegion(region, that.regionType);
       regionManager.getEl = function(selector){