1
2
3
4
5
6
7
8
9

  def truncate_on(text, length = 30, truncate_string = '...', separator = nil)
    return text unless text.respond_to?(:split) && text.length > 0
    if separator
      new_text = text.split(separator)[0...length].join(separator)
      new_text == text ? new_text : new_text + truncate_string
    else
      truncate(text, length, truncate_string)
    end
  end