如何合并论文3个JSON文件合并成一个单一的一个使用Ruby？

Question

Lorem存有是印刷和排版的只是一个虚拟的文本。 Lorem存有一直是标准的虚拟文本，自从16世纪，当一个未知的打印机采取了与字母组成棒和炒它做的字体目录。它已存活不仅五个世纪，但也几乎没有变化成电子排版。它是在20世纪60年代开始流行用含Lorem存有通道Letraset张的释放，以及最近与桌面排版软件，如奥尔德斯PageMaker中包括Lorem存有版本。

Answer 1

如果我理解你如何作为论文文件合并，我认为有几个问题。

1. 你需要保持第一指标的跟踪来获得与第一项目相关的第二项。
2. 在第二级回路次数过多。

我的代码：

require 'json' 

def combine_all_categories(level = 1, args = {:invoker => :@category}) 
    @master_array = [] 

    first_from_zero = JSON.parse(IO.read('first_from_zero.json').scrub) 
    second_from_first = JSON.parse(IO.read('second_from_first.json').scrub) 
    third_from_second = JSON.parse(IO.read('third_from_second.json').scrub) 

    third_index = 0 
    first_from_zero['filterElementCommands'].each_with_index do |one, one_index| 
    @category = {} 

    @category['property'] = one['property'] 
    @category['value'] = one['value'] 
    @category['title'] = one['title'] 
    @category['numberOfItems'] = one['numberOfItems'] 
    @category['numberOfSubFilters'] = one['numberOfSubFilters'] 
    @category['images'] = one['images'] 
    @category['children'] = [] 

    second_from_first[one_index]['filterElementCommands'].each do |two| 
     @category_2 = {} 

     @category_2['property'] = two['property'] 
     @category_2['value'] = two['value'] 
     @category_2['title'] = two['title'] 
     @category_2['numberOfItems'] = two['numberOfItems'] 
     @category_2['numberOfSubFilters'] = two['numberOfSubFilters'] 
     @category_2['images'] = two['images'] 
     @category_2['children'] = [] 

     # Use third_index to retrieve the item from the third file. 
     third_from_second[third_index]['filterElementCommands'].each do |third| 
     # Build children.... 
     end 
     third_index += 1 

     @category['children'] << @category_2 
    end 

    @master_array << @category 
    end 

    File.open("combine.json", 'w') do |f| 
    f.write(@master_array.to_json) 
    end 
end 

缩略的输出，只是显示的标题：

[ 
    { 
    "title": "Aardappel, groente, fruit", 
    "children": [ 
     { 
     "title": "Aardappelen" 
     }, 
     ... 
    ] 
    }, 
    { 
    "title": "Verse kant-en-klaar maaltijden, salades", 
    "children": [ 
     { 
     "title": "Stoommaaltijden" 
     }, 
     ... 
    ] 
    }, 
    ... 
] 

一点题外话，在您发布的代码，你可以使用变量，他们不' t需要成为实例变量。例如，category而非@category。

Answer 2

我想这你想要做什么：

files = [ 
    File.open('json1.txt'), 
    File.open('json2.txt'), 
    File.open('json3.txt'), 
] 

File.open('combined_json.txt', 'w') do |f| 
    while (len = files.length) > 0 
    index = rand(len) 
    if line = files[index].gets 
     f.puts line 
    else 
     files.delete_at(index) 
    end 
    end 
end 

files.each do |f| 
    f.close 
end 


--output:-- 

[ 
    { 
{ 
     "filterElementCommands":[ 
     { 
    "filterElementCommands":[ 
     { 
     "property":"productTaxonomyLevel1.id", 
     "value":"6401", 
      "property":"productTaxonomyLevel3.id", 
      "value":"2341", 
     "title":"Aardappel, groente, fruit", 
[ 
     "numberOfItems":761, 
    { 
     "numberOfSubFilters":7, 
     "images":[ 
     "filterElementCommands":[ 
      { 
      "title":"Hele aardappel", 
       "width":198, 
       "height":198, 
     { 
      "property":"productTaxonomyLevel2.id", 
      "value":"1789", 
      "title":"Aardappelen", 
       "url":"#" 
      } 
      "numberOfItems":37, 
      "numberOfSubFilters":0, 
      "numberOfItems":87, 
      "numberOfSubFilters":8, 
      "images":[ 
      "images":[ 
     ], 
     "showGrid":true, 
       { 
        "width":200, 

        "height":200, 
      ], 
      "showGrid":false, 
      "frozen":false, 
        "url":"#" 
      "links":[ 
     "frozen":false, 
       } 

      ] 
     "links":[ 
     }, 
     { 
      "property":"productTaxonomyLevel3.id", 
      ], 
      "showGrid":false, 

      "frozen":false, 
     ] 
      "value":"5243", 
      "title":"Krieltjes", 
     }, 
      "numberOfItems":17, 
      "links":[ 
     { 
      "numberOfSubFilters":0, 
     "property":"productTaxonomyLevel1.id", 
     "value":"1301", 
      "images":[ 
     "title":"Verse kant-en-klaar maaltijden, salades", 

     "numberOfItems":382, 
     "numberOfSubFilters":17, 

     "images":[ 
      ] 
      ], 
     }, 
     { 
      "property":"productTaxonomyLevel2.id", 
      "showGrid":false, 
      { 
      "value":"1628", 
      "title":"Kruiden, uien, knoflook", 
      "frozen":false, 
       "width":198, 
      "links":[ 

       "height":198, 
       "url":"#" 
      "numberOfItems":39, 
      } 
     ], 
      "numberOfSubFilters":8, 
      ] 
     "showGrid":true, 
     "frozen":false, 
     "links":[ 

     }, {...} 
     ] 
     }, {...} 
      "images":[ 

       { 
        "width":200, 
        "height":200, 

        "url":"#" 
       } 
      ], 
      "showGrid":false, 
      "frozen":false, 
      "links":[ 

      ] 
     }, {...}