Get Mongo initialization out the / route

server/src/main/scala/server/Servlet.scala

@@ -31,19 +31,19 @@ class Servlet(mongoDB: MongoDB) extends ScalatraServlet with AuthenticationSuppo
     tags.link(tags.rel := "stylesheet", tags.`type` := "text/css", href := "css/bootstrap.min.css"),
     tags.script(tags.`type` := "text/javascript", tags.src := "js/gate.js")
   )
+  val userSession = MongoDBObject(user.login -> session.getId)
+  println(mongoDB.host + " => " + mongoDB.port)
+  val server = new ServerAddress(mongoDB.host, mongoDB.port)
+  val credentials = MongoCredential.createCredential("accountUser", "products", "password".toCharArray)
+  val mongoClient = MongoClient(server, List(credentials))
+  println(mongoDB.db + " ? " + mongoDB.dataSet)
+  val mongoCollection = mongoClient(mongoDB.db)(mongoDB.dataSet)
 
   get("/") {
     contentType = "text/html"
     auth("DB") match {
       case Some(user) =>
-        val userSession = MongoDBObject(user.login -> session.getId)
-        println(mongoDB.host + " => " + mongoDB.port)
-        val server = new ServerAddress(mongoDB.host, mongoDB.port)
-        val credentials = MongoCredential.createCredential("accountUser", "products", "password".toCharArray)
-        val mongoClient = MongoClient(server, List(credentials))
-        println(mongoDB.db + " ? " + mongoDB.dataSet)
-        val mongoColl = mongoClient(mongoDB.db)(mongoDB.dataSet)
-        mongoColl.findOne(userSession) match {
+        mongoCollection.findOne(userSession) match {
           case Some(x) =>
             tags.html(
               head,
@@ -53,7 +53,7 @@ class Servlet(mongoDB: MongoDB) extends ScalatraServlet with AuthenticationSuppo
               )
             )
           case None =>
-            mongoColl += userSession
+            mongoCollection += userSession
             tags.html(
               head,
               tags.body(