From 7038d5f1c400d77dc8016a6279dc15ed8ceb5893 Mon Sep 17 00:00:00 2001
From: Sam <sam.saffron@gmail.com>
Date: Sat, 21 Nov 2015 23:40:22 +1100
Subject: [PATCH] PERF: cache information about missing view classes.

---
 app/assets/javascripts/discourse/helpers/raw.js.es6 | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/assets/javascripts/discourse/helpers/raw.js.es6 b/app/assets/javascripts/discourse/helpers/raw.js.es6
index fc4cb44edee..c420c76bdd8 100644
--- a/app/assets/javascripts/discourse/helpers/raw.js.es6
+++ b/app/assets/javascripts/discourse/helpers/raw.js.es6
@@ -1,12 +1,17 @@
 import registerUnbound from 'discourse/helpers/register-unbound';
 
+// see: https://github.com/emberjs/ember.js/issues/12634
+var missingViews = {};
+
 function renderRaw(ctx, template, templateName, params) {
   params.parent = params.parent || ctx;
 
-  if (!params.view) {
+  if (!params.view && !missingViews[templateName]) {
     var viewClass = Discourse.__container__.lookupFactory('view:' + templateName);
     if (viewClass) {
       params.view = viewClass.create(params);
+    } else {
+      missingViews[templateName] = true;
     }
   }