[英]Conditionally add a field in JSON transformation using JQ
I am trying to transform my JSON to different structure using JQ.我正在尝试使用 JQ 将我的 JSON 转换为不同的结构。 I am able to achieve my new structure, however i am getting feilds with Null objects if they are not present in Source, my client wants to remove the fields if they are having null values..
我能够实现我的新结构,但是如果源中不存在 Null 对象,我会得到它们,如果它们具有空值,我的客户想要删除这些字段..
As i iterate i am able to get the structure in new format.当我迭代时,我能够以新格式获取结构。 But additional structures are coming.
但额外的结构即将到来。
Code Snippet- https://jqplay.org/s/w2N_Ozg9Ag代码片段- https://jqplay.org/s/w2N_Ozg9Ag
JSON JSON
{
"amazon": {
"activeitem": 2,
"createdDate": "2019-01-15T17:36:31.588Z",
"lastModifiedDate": "2019-01-15T17:36:31.588Z",
"user": "net",
"userType": "new",
"items": [
{
"id": 1,
"name": "harry potter",
"state": "sold",
"type": {
"branded": false,
"description": "artwork",
"contentLevel": "season"
}
},
{
"id": 2,
"name": "adidas shoes",
"state": null ,
"type": {
"branded": false,
"description": "Spprts",
"contentLevel": "season"
}
},
{
"id": 3,
"name": "watch",
"type": {
"branded": false,
"description": "walking",
"contentLevel": "special"
}
},
{
"id": 4,
"name": "adidas shoes",
"state": "in inventory",
"type": {
"branded": false,
"description": "running",
"contentLevel": "winter"
}
}
],
"product": {
"id": 4,
"name": "adidas shoes",
"source": "dealer",
"destination": "resident"
}
}
}
JQ Query: JQ 查询:
.amazon | { userType: .userType, userName: .user, itemCatalog: (.items | map({ itemId: .id, name, state} )) }
Expected Response:预期回应:
{
"userType": "new",
"userName": "net",
"itemCatalog": [
{
"itemId": 1,
"name": "harry potter",
"state": "sold"
},
{
"itemId": 2,
"name": "adidas shoes"
},
{
"itemId": 3,
"name": "watch"
},
{
"itemId": 4,
"name": "adidas shoes",
"state": "in inventory"
}
]
}
With the query i have, i am getting state : null for the entries which has empty or null values.通过我的查询,我得到state : null对于具有空值或空值的条目。 I want to hide the field itself in these cases.
在这些情况下,我想隐藏字段本身。
Horrible solution, delete them after the query.可怕的解决方案,在查询后删除它们。 There must be a neater way?
必须有更整洁的方法吗? (I started using jq today)
(我今天开始用jq)
.amazon | { userType: .userType, userName: .user, itemCatalog: (.items | map({ itemId: .id, name, state} )) }| del(.itemCatalog[].state |select(. == null))
https://jqplay.org/s/jlNYmJNi25 https://jqplay.org/s/jlNYmJNi25
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