a-ono

Function::getter = (name, getter) ->
  getter ?= () -> @["_" + name]
  Object.defineProperty @prototype, name, get: getter, configurable: true

Function::setter = (name, setter) ->
  setter ?= (value) -> @["_" + name] = value
  Object.defineProperty @prototype, name, set: setter, configurable: true

Function::accessor = (name, options) ->
  {get: getter, set: setter, default: value} = options ? {}

a-ono

// retrieve users with specific role by executing two queries
val userIds = project1.memberships.where(_.roleId === role1.id).select(_.userId)
println(User.where(_.id in userIds).toList)

// or define additional associations for assigning and retrieving users with specific role
case class Project(name: String) extends ActiveRecord {
  lazy val memberships = hasMany[Membership]
  lazy val users = hasManyThrough[User, Membership](memberships)
  
  // additional associations

a-ono

def linkTo(label: String, url: String, options: (Symbol, Any)*) = Html(
  options.foldLeft(<a href={url}>{label}</a>) {
    case (elem, (k, v)) =>
      elem % new xml.UnprefixedAttribute(k.name, v.toString, elem.attributes)
  }.toString
)