diff -r e2a2e2045c0e -r b65843860274 src/main/scala/fis/base/model/Entity.scala
--- a/src/main/scala/fis/base/model/Entity.scala	Fri Apr 20 08:26:22 2012 +0200
+++ b/src/main/scala/fis/base/model/Entity.scala	Fri Apr 20 08:26:22 2012 +0200
@@ -15,16 +15,21 @@
  */
 package fis.base.model
 
+import fis.aaa.model.{CreatedByField, UpdatedByField, User, UserVendors}
+import net.liftweb.common._
+import net.liftweb.http.Factory
 import net.liftweb.record.{MetaRecord, Record}
 import net.liftweb.record.field._
 import net.liftweb.squerylrecord.KeyedRecord
-import net.tz.lift.model.{FieldLabel, OptionalFieldDisplay}
+import net.liftweb.util._
+import net.tz.lift.model.{CreatedField, FieldLabel, OptionalFieldDisplay, UpdatedField}
 import org.squeryl.annotations.Column
 
 /**
  * Base data/model entity trait, common for all FIS entities.
  */
 trait Entity[OwnerType <: Record[OwnerType]] extends KeyedRecord[Long] {
+
   @Column(name="id")
   val idField = new LongField(this.asInstanceOf[OwnerType])
   val name = new StringField(this.asInstanceOf[OwnerType], "") with FieldLabel
@@ -33,6 +38,17 @@
 
   /** Display representation of this entity. */
   def linkName = name.get
+
+  /* Can't mixin traits directly - must be implemented here. */
+  val createdAt = new CreatedField(this.asInstanceOf[OwnerType])
+  val updatedAt = new UpdatedField(this.asInstanceOf[OwnerType])
+  val createdBy = new CreatedByField(this.asInstanceOf[OwnerType],
+    curUserVendor, getUserVendor)
+  val updatedBy = new UpdatedByField(this.asInstanceOf[OwnerType],
+    curUserVendor, getUserVendor)
+
+  protected def curUserVendor: Vendor[Box[User]] = UserVendors.cur
+  protected def getUserVendor: Vendor[Long => Box[User]] = UserVendors.byId
 }
 
 import net.liftweb.common.Box