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我使用的祖先就跟随这railscast插曲: http://railscasts.com/episodes/262-trees-with-ancestry红宝石地图与祖先
我不理解映射方法。有人可以解释“sub_messages”是如何工作的吗?
def nested_messages(messages)
messages.map do |message, **sub_messages**|
render(message) + content_tag(:div, nested_messages(sub_messages), :class => "nested_messages")
end.join.html_safe
end
感谢您的解释! – scientiffic 2013-03-06 03:32:53