re-implement UI._templateInstance()

packages/blaze/view.js

@@ -359,6 +359,16 @@ Blaze.getCurrentView = function (kind) {
   }
 };
 
+// Gets the nearest ancestor view that corresponds to a template
+Blaze.getCurrentTemplateView = function () {
+  var view = Blaze.getCurrentView();
+
+  while (view && ! view.template)
+    view = view.parentView;
+
+  return view || null;
+};
+
 Blaze.getParentView = function (view, kind) {
   var v = view.parentView;
 

packages/spacebars-tests/template_tests.html

@@ -833,3 +833,7 @@ Hi there!
 <template name="spacebars_test_template_created_rendered_destroyed_each_sub">
   {{.}}
 </template>
+
+<template name="spacebars_test_ui_getElementData">
+  <span></span>
+</template>

packages/spacebars-tests/template_tests.js

@@ -2132,7 +2132,7 @@ Tinytest.add(
 );
 
 Tinytest.add(
-  "spacebars-tests - template_tests - access template instance from helper",
+  "spacebars-tests - template_tests - UI._templateInstance from helper",
   function (test) {
     // Set a property on the template instance; check that it's still
     // there from a helper.
@@ -2154,7 +2154,7 @@ Tinytest.add(
 );
 
 Tinytest.add(
-  "spacebars-tests - template_tests - access template instance from helper, " +
+  "spacebars-tests - template_tests - UI._templateInstance from helper, " +
     "template instance is kept up-to-date",
   function (test) {
     var tmpl = Template.spacebars_test_template_instance_helper;

packages/templating/templating.js

@@ -55,6 +55,14 @@ Template.__updateTemplateInstance = function (view) {
   return tmpl;
 };
 
+UI._templateInstance = function () {
+  var templateView = Blaze.getCurrentTemplateView();
+  if (! templateView)
+    throw new Error("No current template");
+
+  return Template.__updateTemplateInstance(templateView);
+};
+
 Template.prototype.events = function (eventMap) {
   var template = this;
   template.__eventMaps = (template.__eventMaps || []);