pt = PropertyTranslator.new(Item)
scope = pt.translate("name") # => "Item.name"
 
emt = ErrorMessageTranslator.new(:be_present)
scope = emt.translate(scope) #=> "Item.name should be present"
 
gtt = GetTextTranslator.new(:ja, :JP)
scope = gtt.translate(scope) #=> "名前は必須です"
 
 
 
 
# 1段目
class PropertyTranslator
  @model = "Item"
  def translate(scope = "name")
    lookup(scope) #=> "Item.name"
  end
 
# 2段目
class ErrorMessageTranslator
  @type = :be_present
 
  def translate(scope = "Item.name")
    "%{property} should be present" % scope #=> "Item.name should_be_present"
  end
 
# 3段目
class GetTextTranslator
  @lang = :ja
 
  def translate(scope = "Item.name should_be_present")
    lookup(scope) #=> "%{property}は必須です"
  end