使用 Ruby 从 csv 创建特定的 json(Hash)答案

【问题标题】：Create a specific json(Hash) from a csv using Ruby使用 Ruby 从 csv 创建特定的 json(Hash)
【发布时间】：2017-08-02 05:11:08
【问题描述】：

如果尝试将多面 CSV（带标题）创建为可用于帖子的 json，我将不胜感激。这是所需的 csv 和 JSON 格式。最终;我需要创建一个可能有 1、2 或许多传真机的位置。

csv

ID,Location Name,timezone,code,display,address,city,state,postalcode,country,faxlocation,faxnumber,(in)active
5,Location1,America/Chicago,bu,Building,1313 Mocking Bird Lane,The City,IL,999999,USA,Room 1; Room 2,111111111; 2222222222,active
8,Location2,America/New_York,bu,Building,2626 Humpty Dumpty Lane,Another City,NY,999999,USA,Room 1; Room 2; Room 3,111111111; 2222222222; 3333333333,active
32,Location3,America/Los_Angeles,bu,Building,3939 Big Bird Lane,Last City,CA,999999,USA,Room 1,111111111,active

json

{
    "resourceType": "Location",
    "id": "5",
     "description": "America/Chicago",
    "name": "Location1",
    "address": {
        "address": "1313 Mocking Bird Lane",
        "city": "The City",
        "state": "IL",
        "postalCode": "999999",
        "country": "USA"
    },
    "telecom": [
        {
           "system": "fax",
            "value": "1111111111",
            "use": "work",
            "extension": [
                {
                    "url": "displayValue",
                    "valueString": "Room 1"
                }
            ]
        },
        {
           "system": "fax",
            "value": "2222222222",
            "use": "work",
            "extension": [
                {
                    "url": "displayValue",
                    "valueString": "Room "
                }
            ]
        }
    ],
    "status": "active"
}

这里都需要

locations = CSV.read(csv)

locations.shift # remove header row
locations.each_index do |index|
    faxnumarrat = locations[index][10].to_s.delete(' ').split(';') #Take 10th index and turn it into an array
    faxlocarray = locations[index][11].to_s.delete(' ').split(';') #Take 11th index and turn it into an array

    # keys = ['loc1','loc2'] 
    # values = ['fax1','fax2']
   my_hash = Hash[faxnumarray.zip(faxlocarray)] # Combine locations and fax numbers

   my_hash.each do |key, value|

      @fax_hash = { 'system' => 'fax', 'value' => key, 'use' => 'work', 'extension' => [{ 'url' => 'automaticSend', 'valueBoolean' => false }, { 'url' => 'displayValue', 'valueString' => value }] } #Build up a hash using k,v.  ISSUE:  Only creates one fax.  Need to put all faxes associated no matter how many per location
    end
end

【问题讨论】：

标签： arrays json ruby csv hash

【解决方案1】：

您可以open 而不是将整个 CSV 作为数组读取或者创建一个new CSV 实例并传入一个选项来转换第一行进入标题进入键以更轻松地访问行内的列；例如

locations = CSV.open(csv, headers: true)

location = locations.first
# => #<CSV::Row "ID":"5" "Location Name":"Location1" "timezone":"America/Chicago" "code":"bu" "display":"Building" "address":"1313 Mocking Bird Lane" "city":"The City" "state":"IL" "postalcode":"999999" "country":"USA" "faxlocation":"Room 1; Room 2" "faxnumber":"111111111; 2222222222" "(in)active":"active">

location["Location Name"]
# => "Location1"

将标题作为我们可以使用的键，然后我们可以使用那些旧的价值观，同时也建立了一个你在你的问题示例

locations = CSV.open(csv, headers: true)

results = locations.map.with_index do |location, index|
  faxnumarray = location["faxnumber"].delete(' ').split(';') #Take 10th index and turn it into an array
  faxlocarray = location["faxlocation"].delete(' ').split(';') #Take 11th index and turn it into an array

  # keys = ['loc1','loc2']
  # values = ['fax1','fax2']
  my_hash = Hash[faxnumarray.zip(faxlocarray)] # Combine locations and fax numbers

  {
    "resourceType" => "Location",
    "id" => location["ID"],
    "description" => location["timezone"],
    "name" => location["Location Name"],
    "address" => {
      "address" => location["address"],
      "city" => location["city"],
      "state" => location["state"],
      "postalCode" => location["postalcode"],
      "country" => location["country"]
    },
    "telecom" => my_hash.map do |key, value|
      {
        'system' => 'fax',
        'value' => key,
        'use' => 'work',
        'extension' => [
          {
            'url' => 'automaticSend',
            'valueBoolean' => false
          },
          {
            'url' => 'displayValue',
            'valueString' => value
          }
        ]
      }
    end,
    "status" => location["(in)active"]
  }
end

results.to_json

我尽可能重用了您的代码并制作了最后一个对象（返回的对象）在map 块内类似于请求的哈希结果对象。使用map 而不是each 意味着它

返回一个新数组，其中包含对 enum 中的每个元素运行一次 block 的结果。

-- Module: Enumerable (Ruby 2_4_0)

这会产生以下结果

[
  {
    "resourceType": "Location",
    "id": "5",
    "description": "America/Chicago",
    "name": "Location1",
    "address": {
      "address": "1313 Mocking Bird Lane",
      "city": "The City",
      "state": "IL",
      "postalCode": "999999",
      "country": "USA"
    },
    "telecom": [
      {
        "system": "fax",
        "value": "111111111",
        "use": "work",
        "extension": [
          {
            "url": "automaticSend",
            "valueBoolean": false
          },
          {
            "url": "displayValue",
            "valueString": "Room 1"
          }
        ]
      },
      {
        "system": "fax",
        "value": "2222222222",
        "use": "work",
        "extension": [
          {
            "url": "automaticSend",
            "valueBoolean": false
          },
          {
            "url": "displayValue",
            "valueString": " Room 2"
          }
        ]
      }
    ],
    "status": "active"
  },
  {
    "resourceType": "Location",
    "id": "8",
    "description": "America/New_York",
    "name": "Location2",
    "address": {
      "address": "2626 Humpty Dumpty Lane",
      "city": "Another City",
      "state": "NY",
      "postalCode": "999999",
      "country": "USA"
    },
    "telecom": [
      {
        "system": "fax",
        "value": "111111111",
        "use": "work",
        "extension": [
          {
            "url": "automaticSend",
            "valueBoolean": false
          },
          {
            "url": "displayValue",
            "valueString": "Room 1"
          }
        ]
      },
      {
        "system": "fax",
        "value": "2222222222",
        "use": "work",
        "extension": [
          {
            "url": "automaticSend",
            "valueBoolean": false
          },
          {
            "url": "displayValue",
            "valueString": " Room 2"
          }
        ]
      },
      {
        "system": "fax",
        "value": "3333333333",
        "use": "work",
        "extension": [
          {
            "url": "automaticSend",
            "valueBoolean": false
          },
          {
            "url": "displayValue",
            "valueString": " Room 3"
          }
        ]
      }
    ],
    "status": "active"
  },
  {
    "resourceType": "Location",
    "id": "32",
    "description": "America/Los_Angeles",
    "name": "Location3",
    "address": {
      "address": "3939 Big Bird Lane",
      "city": "Last City",
      "state": "CA",
      "postalCode": "999999",
      "country": "USA"
    },
    "telecom": [
      {
        "system": "fax",
        "value": "111111111",
        "use": "work",
        "extension": [
          {
            "url": "automaticSend",
            "valueBoolean": false
          },
          {
            "url": "displayValue",
            "valueString": "Room 1"
          }
        ]
      }
    ],
    "status": "active"
  }
]

参考资料：

Class: CSV (Ruby 2_4_0)

【讨论】：

简直太棒了。像冠军一样工作。感谢您带我去学校并教我一些新东西！