Question

我已经阅读了python question similar to my problem，但它没有帮助。

我有一个50万行CSV文件，如下所示：

contract-number,amendment-number,award-date,contract-value,supplier-name,contracting-entity
W8486,0,2014-04-14,14326000,"COMPANY A","Office of Llama Supplies"
W8487,0,2014-04-10,150000,"COMPANY B","Foo Bar Dept"
W8488,2,2014-03-24,146000,"COMPANY C","Armed Forces"
W8488,1,2014-03-03,68000,"COMPANY C","Armed Forces"
W8488,0,2014-02-17,27760,"COMPANY C","Armed Forces"
W8489,0,2014-02-14,51000000,"COMPANY B","Dept of Magical Affairs"

许多合同不止一次出现。我想编写一个Ruby脚本来将我的数据转换为JSON文件，该文件嵌套到同一个节点中，那些具有相同编号的合同如下：

[{"W8486":
  {0:
    {
      "award-date": 2014-04-14,
      "contract-value": 14326000,
      "supplier-name": "COMPANY A",
      "contracting-entity": "Office of Llama Supplies"
    }
  }
},
{"W8487":
  {0:
    {
      "award-date": 2014-04-10,
      "contract-value": 150000,
      "supplier-name": "COMPANY B",
      "contracting-entity": "Foo Bar Dept"
    }
  }
},
{"W8488":
  {2:
    {
      "award-date": 2014-03-24,
      "contract-value": 146000,
      "supplier-name": "COMPANY C",
      "contracting-entity": "Armed Forces"
    }
  },
  {1:
    {
      "award-date": 2014-03-03,
      "contract-value": 68000,
      "supplier-name": "COMPANY C",
      "contracting-entity": "Armed Forces"
    }
  },
  {0:
    {
      "award-date": 2014-02-17,
      "contract-value": 27760,
      "supplier-name": "COMPANY C",
      "contracting-entity": "Armed Forces"
    }
  },
},
{"W8489":
  {0:
    {
      "award-date": 2014-02-14,
      "contract-value": 51000000,
      "supplier-name": "COMPANY B",
      "contracting-entity": "Dept of Magical Affairs"
    }
  }
}]

到目前为止，我已设法迭代CSV using CSV.foreach do |line|，将每个项目放入哈希值。我设法检查了line[0] == previousContractNumber。

但每次我写JSON文件时，都会收到此错误：

nesting of 100 is too deep (JSON::NestingError)

我怎么能绕过这个？

非常感谢！

Answer 1

以下是应该工作的一些代码：

result = Hash.new { |h, k| h[k] = {} }
CSV.foreach do |line|
  result[line[0]][line[1]] = {
          "award-date" => line[2],
          "contract-value" => line[3],
          "supplier-name" => line[4],
          "contracting-entity" => line[5]
  }
end

Ruby：在将CSV转换为JSON时，100的嵌套太深（JSON :: NestingError）

1 个答案: