Question

I am trying to create a builder for my form fields and I come with something like:

class Select(name:String) {
  object cell extends RequestVar("all")
  /* Do some stuff with name and cell */
}

val fruitsField = new Select("fruits")
val drinksField = new Select("drinks")

Now I can do:

fruitsField.cell.set("tomato")
drinksField.cell.get // returns "tomato"

When using those fields I realized that cell was shared by fruits and drinks. I know that it is the normal behavior but is there a way to have this inner object cell to be non-static?

EDIT

I tried the following but it has the same behavior:

class Select(name:String) {
  class ReqVar extends RequestVar("all")
  val cell = new ReqVar
  /* Do some stuff with name and cell */
}

Answer 1

Attention, the Lift documentation (2.4-M4) states about RequestVars (and SessionVars):

If you find it necessary to create a RequestVar subclass of which there may be more than one instance, it is necessary to override the nameSalt() method to return a unique salt value for each instance to prevent name collisions.

So you will have to do something like this:

class Select(name:String) {
  val cell = new RequestVar("all") {
    override def __nameSalt = "select_cell_" + name
  }
  /* Do some stuff with name and cell */
}

Of course this will only work if there exists only one instance of Select with a given name per Request.

EDIT

Based on what you just posted

class Select(name:String) {
  class ReqVar extends RequestVar("all") {
    override def __nameSalt = "select_reqvar_cell_" + name
  }

  val cell = new ReqVar
  /* Do some stuff with name and cell */
}