如何在 Jinja 中过滤字典? [英] How to filter dictionaries in Jinja?

问题描述

我有一个包的字典，包名是键，一些细节的字典是值:

{php7.1-readline":{"最新": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1",起源":[ppa.launchpad.net"],"版本": "7.1.6-2~ubuntu14.04.1+deb.sury.org+1","www": "http://www.php.net/"},php7.1-xml":{"最新": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1",起源":[ppa.launchpad.net"],"版本": "7.1.6-2~ubuntu14.04.1+deb.sury.org+1","www": "http://www.php.net/"},普利茅斯":{版本":0.8.8-0ubuntu17.1"},....}

我想将上述内容简化为仅包含值中具有 latest 属性的包的字典.

看起来 json_query 是要使用的过滤器，但我无法弄清楚语法.那里的例子似乎都对字典进行操作，而不是对字典相同......

例如，如果我将上述字典管道"到 json_query('*.latest') 中，我会得到实际最新版本的列表:<预><代码>["7.1.9-1+ubuntu14.04.1+deb.sury.org+1","7.1.9-1+ubuntu14.04.1+deb.sury.org+1","7.1.6-2~ubuntu14.04.1+deb.sury.org+1"]

如何获取整个字典元素?

有希望吗?

解决方案

With dict2items 过滤器 ^{于 2017 年 12 月添加}，可以使用本机功能:

- 调试:msg: "{{ dict(pkg | dict2items | json_query('[?value.latest].[key, value.latest]')) }}"

结果:

"msg": {"php7.1-readline": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1","php7.1-xml": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1"}

I have a dictionary of packages with package-name being the key and a dictionary of some details being the value:

{
        "php7.1-readline": {
            "latest": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1", 
            "origins": [
                "ppa.launchpad.net"
            ], 
            "version": "7.1.6-2~ubuntu14.04.1+deb.sury.org+1", 
            "www": "http://www.php.net/"
        }, 
        "php7.1-xml": {
            "latest": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1", 
            "origins": [
                "ppa.launchpad.net"
            ], 
            "version": "7.1.6-2~ubuntu14.04.1+deb.sury.org+1", 
            "www": "http://www.php.net/"
        }, 
        "plymouth": {
            "version": "0.8.8-0ubuntu17.1"
        },
    ....
}

I'd like to reduce the above to a dictionary with only the packages, that have the latest-attribute in their values.

It would seem like json_query is the filter to use, but I can't figure out the syntax. The examples out there all seem to operate on lists of dictionaries, not dictionaries of same...

For example, if I "pipe" the above dictionary into json_query('*.latest'), I get the list of the actual latest versions:

[
  "7.1.9-1+ubuntu14.04.1+deb.sury.org+1",
  "7.1.9-1+ubuntu14.04.1+deb.sury.org+1",
  "7.1.6-2~ubuntu14.04.1+deb.sury.org+1"
]

How can I get the entire dictionary-elements instead?

Any hope?

解决方案

With dict2items filter ^{added in December 2017}, it is possible using native functionality:

- debug:
    msg: "{{ dict(pkg | dict2items | json_query('[?value.latest].[key, value.latest]')) }}"

The result:

"msg": {
    "php7.1-readline": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1",
    "php7.1-xml": "7.1.9-1+ubuntu14.04.1+deb.sury.org+1"
}

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