From c4c8bc2fbea328fb030b188754278cfeb7e8f056 Mon Sep 17 00:00:00 2001
From: Arjun Singh <arjun810@gmail.com>
Date: Thu, 26 Jul 2012 16:34:40 -0400
Subject: [PATCH] Adding the ability for javascript from problems to execute
 more intelligently; for example, errors from javascript included in the
 returned html will show up in the console when using this mechanism.

---
 .../lib/xmodule/xmodule/js/src/capa/display.coffee   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/common/lib/xmodule/xmodule/js/src/capa/display.coffee b/common/lib/xmodule/xmodule/js/src/capa/display.coffee
index b5a41e3da5..4ee8257e36 100644
--- a/common/lib/xmodule/xmodule/js/src/capa/display.coffee
+++ b/common/lib/xmodule/xmodule/js/src/capa/display.coffee
@@ -31,8 +31,20 @@ class @Problem
     else
       $.postWithPrefix "#{@url}/problem_get", (response) =>
         @el.html(response.html)
+        @executeProblemScripts()
         @bind()
 
+  executeProblemScripts: ->
+    @el.find(".script_placeholder").each (index, placeholder) ->
+      s = $("<script>")
+      s.attr("type", "text/javascript")
+      s.attr("src", $(placeholder).attr("data-src"))
+
+      # Need to use the DOM elements directly or the scripts won't execute
+      # properly.
+      $('head')[0].appendChild(s[0])
+      $(placeholder).remove()
+
   check: =>
     Logger.log 'problem_check', @answers
     $.postWithPrefix "#{@url}/problem_check", @answers, (response) =>