For #1

layout-test.html

@@ -54,3 +54,11 @@
     footer
   {{/contentFor}}
 </template>
+
+<template name="DefaultDataForLayout">
+  {{#with title="ok"}}
+    {{#Layout template="LayoutWithOneYield"}}
+      inner{{title}}
+    {{/Layout}}
+  {{/with}}
+</template>

layout-test.js

@@ -89,6 +89,12 @@ Tinytest.add('layout - default main region using Layout template', function (tes
   });
 });
 
+Tinytest.add('layout - default data context using Layout template', function (test) {
+  withRenderedComponent(Template.DefaultDataForLayout, function (cmp, screen) {
+    test.equal(screen.innerHTML.compact(), 'layoutinnerok', 'default data context should be outer data context');
+  });
+});
+
 Tinytest.add('layout - dynamic yield regions', function (test) {
   withRenderedLayout({template: 'LayoutWithTwoYields'}, function (layout, screen) {
     var renderedCount = 1;

layout.js

@@ -104,7 +104,13 @@ Layout = UI.Component.extend({
     var tmplDep = new Deps.Dependency;
 
     // get the initial data value
-    var data = Deps.nonreactive(function () { return self.get(); });
+    var data = Deps.nonreactive(function () { 
+      // check parent incase we are rendered in isolation (e.g. by IR)
+      // -- we are assuming that the parent is a {{#with layoutTemplate=X
+      // so we want to skip past it for the data to be used by the yields
+      // see https://github.com/eventedmind/blaze-layout/issues/1
+      return (self.parent && self.parent.parent || self).get(); 
+    });
     var dataDep = new Deps.Dependency;
     var regions = this._regions = new ReactiveDict;
     var content = this.__content;