render.scala

def render = Observable (
    div ( id := "pageForm",
      connectOtherComponents,
      div( cls := "groupControls",
        div(
          cmpInput4("Ejercicio", hdlEjercicio.mapHandler[String](_.toInt){ f: Int => if (f <= 0) "" else f.toString},
            VDomModifier(width:="35px", marginRight:="30px", textAlign:="center"),
            VDomModifier.empty ),
          cmpInput4(
            "Folio",
            hdlFolio.mapHandler[String](_.toInt){ f: Int => if (f <= 0) "" else f.toString},
            VDomModifier(width:="45px", textAlign:="center"),
            VDomModifier(onChangingIdComparative)
          )
        )
      ),
      renderGrid,
    )
  )