hi，各位，我打算组装一个这样的对象，Template 里面一个模板，含 header 跟 body，body 其实是一个 Card 的数组，Card 的 new 如下图那样 不知道有没更好的实现方式

//card.rb
class Card
  attr_accessor :url, :data, :type, :style, :id

  def initialize(params)
    params.each do |key, value|
      instance_variable_set("@#{key}", value)
    end
  end
end

//header.rb
class Header
  attr_accessor :title, :menu, :icon

  def initialize(params)
    params.each do |key, value|
      instance_variable_set("@#{key}", value)
    end
  end
end
//style.rb
class Style
  attr_accessor :margin_top, :margin_right, :margin_bottom, :margin_left, :background
  def initialize(params)
    params.each do |key, value|
      instance_variable_set("@#{key}", value)
    end
  end
end

//template.rb
class Template
  attr_accessor :header, :body

  def initialize(params)
    params.each do |key, value|
      instance_variable_set("@#{key}", value)
    end
  end

  def add_card(card)
    @body ||= Array.new
    @body << card
    self
  end
end

//这里是组装对象

nameView = Card.new(:data => JSON.parse(File.read("#{Rails.root}/user.json")),:type => "NameItemCard", :style => Style.new(:margin_top => 10),:id => "nameCard")

itemView = Card.new(:data => JSON.parse(File.read("#{Rails.root}/setting_item.json")),:type => "ItemDividerCard",:style => Style.new(:margin_top => 10), :id => "itemCard")

buttonView = Card.new(:data => JSON.parse(File.read("#{Rails.root}/setting_button.json")),:type => "MatchButtonCard", :style => Style.new(:margin_top => 30), :id => "btnLogout")

header = Header.new(:title => "我的", :icon => "ic_tab_me_normal")

template = Template.new(:header => header).add_card(nameView).add_card(itemView).add_card(buttonView)