jq:将嵌套对象添加到JSON [英] jq: adding nested object to a JSON

问题描述

我有一个包含多个配置文件的json文件:

I have a json file containing several profiles:

{
  "profile1": {
    "user": "user1",
    "channel": "channel1",
    "hook": "hook1"
  },
  "default": {
    "user": "user1",
    "channel": "channel1",
    "hook": "hook2"
  }
}

我想使用jq插入另一个配置文件测试"，以便最终结果为

I want to use jq to insert another profile, "test", so that the end result will be

{
  "profile1": {
    "user": "user1",
    "channel": "channel1",
    "hook": "hook1"
  },
  "default": {
    "user": "user1",
    "channel": "channel1",
    "hook": "hook2"
  },
  "test": {
    "user": "user3",
    "channel": "channel3",
    "hook": "hook3"
  }
}

我可以直接在命令行中执行以下操作:

Directly in the command line I can do it with:

cat filename | 
    jq  '.+  { "test": { "user": "u3", "channel" : "c3", "hook": "w3" } }'

但是当我在bash脚本中尝试时:

But when I try it in my bash script:

cat "$CONF_FILE" | 
    jq --arg p "$PROFILE" --arg u "$U" --arg c "$C" --arg w "$WH" \
    '.+ { $p: { "user": $u, "channel": $c, "hook": $w } }' `

我遇到以下错误:

jq: error: syntax error, unexpected ':', expecting '}' (Unix shell quoting issues?) at <top-level>, line 1:
.+ { $p: { "user": $u, "channel": $c, "hook": $w } }
jq: error: syntax error, unexpected '}', expecting $end (Unix shell quoting issues?) at <top-level>, line 1:
.+ { $p: { "user": $u, "channel": $c, "hook": $w } }
jq: 2 compile errors

我尝试用引号将变量引起来，但随后我只得到字符串$ p:

I've tried surrounding the variable with quotes but then I get just the string $p:

cat "$CONF_FILE" | 
    jq --arg p "$PROFILE" --arg u "$U" --arg c "$C" --arg w "$WH" \
    '.+ { "$p": { "user": $u, "channel": $c, "hook": $w } }' 

结果:

{
  "profile1": {
    "user": "user1",
    "channel": "channel1",
    "hook": "hook1"
  },
  "default": {
    "user": "user1",
    "channel": "channel1",
    "hook": "hook2"
  },
  "$p": {
    "user": "user3",
    "channel": "channel3",
    "hook": "hook3"
  }
}

编辑:我发现了一种临时解决方案，将对象转换为数组，编辑值(现在的配置文件名称是值而不是键)，然后将数组转换回一个对象:

I have found what seems a temporary solution, converting the object to an array, editing the value (now the profile name is a value and not a key) and converting the array back to an object:

cat "$CONF_FILE" | 
    jq --arg p "$PROFILE" --arg u "$U" --arg c "$C" --arg w "$WH" \
    'to_entries | .+ [ { "key": $p, "value": { "user": $u, "channel": $c, "hook": $w } } ] | from_entries'

这似乎很粗糙，但确实有效.我仍然希望有一个更好的解决方案...

It seems crude, but it works. I am still hoping for a better solution...

推荐答案

在动态键周围使用括号:

Use parenthesis around dynamic keys:

jq --arg p "$PROFILE" --arg u "$U" --arg c "$C" --arg w "$WH" \
'. + {($p): {"user": $u, "channel": $c, "hook": $w}}' "$CONF_FILE"

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