Question

给出以下json来源

{
  "pages":{
        "yomama/first key": {
            "data": {
                "fieldset": "lesson-video-overview",
                "title": "5th Grade Math - Interpreting Fractions",
            },
            "order": 4
        },

        "yomama/second key": {
            "data": {
                "fieldset": "lesson-video-clip-single",
                "title": "Post-Lesson Debrief Part 5",
            },
            "order": 14
        },
        "yopapa/Third key": {
            "data": {
                "fieldset": "lesson-video-clip-single",
                "title": "Lesson Part 2B",
            },
            "order": 6
        }
    }
}

如何输出像这样的数组类型的输出？我面临的主要挑战是提取密钥，例如“ yomama /第一把钥匙”，在理想的世界里，我可以像给我一系列以“ yomama”（但不是yopapa）开头的钥匙一样过滤


[

    {
        "url" : "yomama/first key",
        "data": {
            "fieldset": "lesson-video-overview",
            "title": "5th Grade Math - Interpreting Fractions",
        },
        "order": 4
    },
    {
        "url" : "yomama/second key",
        "data": {
            "fieldset": "lesson-video-clip-single",
            "title": "Post-Lesson Debrief Part 5",
        },
        "order": 14
    },
    {
        "url" : "yopapa/Third key",
        "data": {
            "fieldset": "lesson-video-clip-single",
            "title": "Lesson Part 2B",
        },
        "order": 6
    }

]

Answer 1

假设输入位于so.json中，并更正为格式正确的JSON，则可以使用：

jq '[.pages | to_entries[] | {"url": .key, "data": .value.data, "order": .value.order}]' < so.json

Answer 2

这里的解决方案不需要明确地包含所有其他键：

.pages
| [ to_entries[]
    | select(.key | startswith("yomama"))
    | {url: .key} + .value ]

Answer 3

或者，使用基于walk-path的unix实用程序可以轻松实现相同的JSON操作 jtc

# Do not initiate the form with object
form = MyForm() 

# Split logic to 'GET' and 'POST request'
if request.method == 'GET'
    MyForm.Field.Data = ', '.join([element.attribute for element in MyForm.Field.all()]

    # MyForm.Field is an AppenderBaseQuery Object >> Returns a query statement
    # MyForm.Field.all() returns a list of Objects
    # The list comprehension returns a list of a specific attribute for each object
    # The .join combines the list to a string, separated by ", "
    # This entire thing is pre-populated onto the form
    # Eg: "Attribute01, Attribute02, Attribute03"

if validate_on_submit:
    MyObject.Field = FunctionToUpdateField(form.Field.data)

    # form.Field.data will be a string
    # FunctionToUpdateField compares above string with what is stored in db ...
    # determines which elements to add / remove

它将显示每个个找到的（步行的）条目，其标签以bash $ <source.json jtc -w'<^yomama.*>L:<VAL>v' -T'{"url":"{$0}",{VAL}}' -j [ { "data": { "fieldset": "lesson-video-overview", "title": "5th Grade Math - Interpreting Fractions" }, "order": 4, "url": "yomama/first key" }, { "data": { "fieldset": "lesson-video-clip-single", "title": "Post-Lesson Debrief Part 5" }, "order": 14, "url": "yomama/second key" } ]开头（同时自动在名称空间中生成匹配的REGEX组$ 0-yomama ），还在命名空间中存储找到的记录（<^yomama.*>L:）的值
但在输出之前，找到的条目将进行模板插值（<VAL>v），并在其中插入新记录-T
url将行进的条目包装回JSON数组

PS>披露：我是-j-用于JSON操作的shell cli工具的创建者

提取键和数据并写入数组

3 个答案: