repeat helper with index

gistfile1.scala

package views.html.helper

import play.api.templates.Html

import play.api.data.Field

object repeatWithIndex {
  def apply(field: Field, min: Int = 1)(f: (Field, Int) => Html) = {
    val idSeq = if (field.indexes.size >= min) {
      field.indexes
    } else {
      val diff = min - field.indexes.size
      val maxIndex = if (field.indexes.isEmpty) 0 else field.indexes.max + 1
      field.indexes ++ (maxIndex until (diff + maxIndex))
    } 
    idSeq.map(i => f(field("[%d]".format(i)), i))
  }
}