From 7479357869099d1c4c6f57961f6ce22028736355 Mon Sep 17 00:00:00 2001
From: Scott Erickson <sderickson@gmail.com>
Date: Thu, 28 Apr 2016 13:47:03 -0700
Subject: [PATCH] Tweak course population script

---
 ...016-04-14-populate-classrooms-with-levels.js | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/scripts/mongodb/migrations/2016-04-14-populate-classrooms-with-levels.js b/scripts/mongodb/migrations/2016-04-14-populate-classrooms-with-levels.js
index 83855682c..df5e8e3e0 100644
--- a/scripts/mongodb/migrations/2016-04-14-populate-classrooms-with-levels.js
+++ b/scripts/mongodb/migrations/2016-04-14-populate-classrooms-with-levels.js
@@ -26,9 +26,14 @@ for (var courseIndex in courses) {
   
 print('constructed', JSON.stringify(coursesData, null, '\t'));
 
-db.classrooms.update(
-  {}, // Set all
-  //{courses: {$exists: false}}, // Set all w/out values
-  {$set: {courses: coursesData}},
-  {multi: true}
-);
\ No newline at end of file
+db.classrooms.find({}, {courses:1}).forEach(function(classroom) {
+  print('classroom', classroom._id);
+  if(classroom.courses) {
+    print('\tskipping');
+    return;
+  }
+  db.classrooms.update(
+    {_id: classroom._id},
+    {$set: {courses: coursesData}}
+  );  
+});