如何使用正則運算式搜索JSON哈希？

我正在使用 API 將所有宏回傳給我，我試圖回傳所有“宏”，其中“操作”包含與我將在下面鏈接的正則運算式模式匹配的“值”。

我已經嘗試過下面和其他方法，但它回傳我的當前值為零。任何提示表示贊賞

macros["value"].select { |m| m['key'] == 'value' }.first['/^DE([0-9a-zA-Z]\s?){20}$/gm']

API 結果片段：

{
    "macros": [
        {
            "url": "x.json",
            "id": 1900002708354,
            "actions": [
                {
                    "field": "comment_value_html",
                    "value": "DE89 3704 0044 0532 0130 00"
                }
            ],
            "restriction": null
        },
{
            "url": "x.json",
            "id": 1900002708354,
            "actions": [
                {
                    "field": "comment_value_html",
                    "value": "this is a comment value"
                }
            ],
            "restriction": null
        },
          {
            "url": "x.json",
            "id": 59071949,
            "actions": [
                {
                    "field": "priority",
                    "value": "low"
                },
                {
                    "field": "comment_value",


                      "value": "DE89 3704 0044 0532 0130 00
"
                    }
                ],
                "restriction": null
            },

預期結果：

  {
        "macros": [
            {
                "url": "x.json",
                "id": 1900002708354,
                "actions": [
                    {
                        "field": "comment_value_html",
                        "value": "DE89 3704 0044 0532 0130 00"
                    }
                ],
                "restriction": null
            },
 
              {
                "url": "x.json",
                "id": 59071949,
                "actions": [
                    {
                        "field": "priority",
                        "value": "low"
                    },
                    {
                        "field": "comment_value",
                        "value": "DE89 3704 0044 0532 0130 00
"
                    }
                ],
                "restriction": null
            },

uj5u.com熱心網友回復：

鑒于這macros是包含macros資料的 JSON 物件，您可以使用

macros.select { |m| m["actions"].any? { |w| /\ADE(?:[0-9a-zA-Z]\s?){20}\z/.match?(w["value"]) } }

這是一個 Ruby 演示：

require 'json'

j = <<-DATA
{
    "macros": [
        {
            "url": "x.json",
            "id": 1900002708354,
            "actions": [
                {
                    "field": "comment_value_html",
                    "value": "DE11111111111222222220"
                }
            ],
            "restriction": null
        },
        {
            "url": "x.json",
            "id": 59071949,
            "actions": [
                {
                    "field": "priority",
                    "value": "low"
                },
                {
                    "field": "comment_value",
                    "value": "DE12345678901234567890"
                }
            ],
            "restriction": null
        }
]}
DATA

jsObj = JSON.parse(j)
macros = jsObj['macros']
puts jsObj['macros'].select { |m| m["actions"].any? { |w| /\ADE(?:[0-9a-zA-Z]\s?){20}\z/.match?(w["value"]) } }

輸出：

{"url"=>"x.json", "id"=>1900002708354, "actions"=>[{"field"=>"comment_value_html", "value"=>"DE11111111111222222220"}], "restriction"=>nil}
{"url"=>"x.json", "id"=>59071949, "actions"=>[{"field"=>"priority", "value"=>"low"}, {"field"=>"comment_value", "value"=>"DE12345678901234567890"}], "restriction"=>nil}

的.select { |m| m["actions"].any? { |w| /\ADE(?:[0-9a-zA-Z]\s?){20}\z/.match?(w["value"]) } }主要部分得到所有actions包含有一個陣列節點value，其值給出的正則運算式匹配的密鑰。

標籤：json 正则表达式 红宝石

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