More template sequence helpers

Helper.scala

package views.html.helper

import play.api.templates.Html

// Executes the first block if non-empty, the second otherwise
// Passes the entire seq (as in defining)
object ifEmptyOrElse {
  def apply[T <: Seq[_]](t: T)(nonEmptyBlock: (T) => Html)(emptyBlock: => Html) = {
    if (t.nonEmpty) nonEmptyBlock(t) else emptyBlock
  }
}

// Executes the first block if non-empty, the second otherwise
// Maps each element
object mapOrElse {
  def apply[T](t: Seq[T])(nonEmptyBlock: (T) => Html)(emptyBlock: => Html) = {
    if (t.nonEmpty) t.map(nonEmptyBlock(_)) else emptyBlock
  }
}