[guadec-web-regcfp/develop] randomize

[Patrick Uiterwijk <puiterwijk src gnome org>]

commit 2436aa147b13261d2dfe55870b962f9fd2de9244
Author: Patrick Uiterwijk <puiterwijk redhat com>
Date:   Sat Aug 8 15:18:26 2015 +0200

    randomize

 routes/index.js |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/routes/index.js b/routes/index.js
index ce51363..7486609 100644
--- a/routes/index.js
+++ b/routes/index.js
@@ -29,6 +29,25 @@ router.get('/', function(req, res, next) {
   }
 });
 
+function shuffle(array) {
+  var currentIndex = array.length, temporaryValue, randomIndex ;
+
+  // While there remain elements to shuffle...
+  while (0 !== currentIndex) {
+
+    // Pick a remaining element...
+    randomIndex = Math.floor(Math.random() * currentIndex);
+    currentIndex -= 1;
+
+    // And swap it with the current element.
+    temporaryValue = array[currentIndex];
+    array[currentIndex] = array[randomIndex];
+    array[randomIndex] = temporaryValue;
+  }
+
+  return array;
+}
+
 router.all('/view_name', utils.require_permission('registration/view_name'));
 router.get('/view_name', function(req, res, next) {
   var everyone = req.query.everyone;
@@ -41,6 +60,7 @@ router.get('/view_name', function(req, res, next) {
           users2.push(user);
         }
       };
+      shuffle(users);
       var name = null;
       if(req.query.index) {
         name = users[req.query.index].name;