lift

I have SessionVar like this in Lift: object MyObject { object myVar extends SessionVar[Box[MyObject]](Empty) } Then I set value once for myVar: MyObject.myVar(Full(value)) My problem is that after some time (1-5 mins) myVar will lose its value, that is, it will have value Empty again. This is not due inactivity since I am clicking pages constantly. My code is not setting value to Empty. During this 1-5 mins the myVar will work correctly. The logs contain no related messages. I tried to add shutdown method to myVar, but it is not getting called. override protected def onShutdown(session:

From the Lift-Web Mapper model below, how do I access the fields under AssignmentformLink? object TForm extends TForm with LongKeyedMetaMapper[TForm] class TForm extends LongKeyedMapper[TForm] with IdPK with ManyToMany { def getSingleton = TForm object label extends MappedString(this, 40) object pattern extends MappedString(this, 200) object assignments extends MappedManyToMany( AssignmentformLink, AssignmentformLink.assignment, AssignmentformLink.form, TForm) } object AssignmentformLink extends AssignmentformLink with LongKeyedMetaMapper[AssignmentformLink] { override def dbIndexes = Index

For some reason sbt bails on .11.3 when working with the mongodb-record auth project, and it seems to me that's the only version i can download from the git site. The idiomatic way is to specify sbt version in build.properties as sbt.version=0.11.2 But since group id in 0.11.3 was changed from org.scala-tools.sbt to org.scala-sbt , sbt can't resolve older versions. But you still can manually download older version of launcher from typesafe repo . 来源： https://stackoverflow.com/questions/10516610/i-need-sbt-0-11-2-to-build-the-mongo-auth-app-for-lift

I am currently implementing a graph using d3 and a json object for data. A working example of such a graph can be found here: http://bl.ocks.org/950642 . If you know d3 you can certainly directly jump to the My Problem part. Quick overview of code So, basically in my template I have the minimum code necessary: <div id="main" class="lift:surround?with=default;at=content"> <div class="lift:GraphVisual.showGraph"></div> </div> Then in my snippet ( GraphVisual.scala ) I have the following: def showGraph = { <h3>Bachelor 5/6 - Communication Systems</h3> ++ <div id="graph-container" width="500px"

I'm trying to use Lift JPA and when I reference Model, it calls the super constructor I'm getting an exception: object Model extends LocalEMF("LiftPersistenceUnit") with RequestVarEM The problem is that the exception is hidden behind this exception: java.lang.NoClassDefFoundError: Could not initialize class... So, my question is: what is the best way to log/handle exceptions in this case? Alternatively, can anyone recommend another pattern to use Lift JPA? The way Model has been code is the recommended way, but it's not very user-friendly IMO. The idea is to have a singleton entity manager

I must write daemon and I want to use Models for connecting to the database and some useful Lift classes. Is it possible to run analog of Rails's rake tasks? There is similar question on the Scala community group. The answer is to use Actors to do background processing. http://groups.google.com/group/liftweb/browse_thread/thread/ce536649e6e83867/ffde3a3d619adf9d?lnk=gst&q=background#ffde3a3d619adf9d 来源： https://stackoverflow.com/questions/3383076/background-task-in-liftweb-environment