Question

我有一连串的字符串看上去类似:

“文件夹1/filea/x1.png”、“文件夹1/fileb/x2.png”、“文件夹2/fileer3/filec/x3.png”......。

我的目标是制作一个钻头菜单,比如:http://iwantaneff.in/repo/plutins/menu-nav/drill.down/index.html

In rails I have tried using the group_by method, but had no luck. essentially I need to create a folder structure like

folder1
- filea
  - x1.png
- fileb
  - x2.png
folder2

等等.......

知道从哪开始吗? 我很难解决这个问题。我在每个阵列上都使用了分裂法, 这样我就能得到一系列的阵列, 但是这似乎没有进展。我认为我需要使用循环来通过子树?

Answer 1

回答简单) 解析和插入数据时使用循环循环

解析 gt 示例;

   def parse(hash)
      hash.each do |k,v|
        files = v.select{|e| e.size == 1}
        hash[k] = {"files" => files.flatten} unless files.empty?
        dirs = v - files
        unless dirs.empty? 
          dirs = parse(dirs.group_by{|e| e.shift})
          if files.empty?
            hash[k] = dirs  
          else
            hash[k].merge! dirs
          end
        end 
      end
    end

输入输入

h = {:root =>  ["folder1/filea/x1.png", "folder1/fileb/x2.png","folder1/fileb/folder4/111", "folder2/folder3/filec/x3.png","folder2/folder3/filec/x4.png"].map{|e| e.split("/")}}

parse(h)

将输出为

{:root=>{"folder1"=>{"filea"=>{"files"=>["x1.png"]}, "fileb"=>{"files"=>["x2.png"], "folder4"=>{"files"=>["111"]}}}, "folder2"=>{"folder3"=>{"filec"=>{"files"=>["x3.png", "x4.png"]}}}}}

友情链接