ansible/yaml : 从 dict 获取值作为字符串答案

【问题标题】：ansible/yaml : get value as string from dictansible/yaml : 从 dict 获取值作为字符串
【发布时间】：2021-06-01 19:11:33
【问题描述】：

我有一些变量需要循环：

mariadb_grants:
  "*.*":
    - user1: "ALL, SELECT"
    - user2: "ALL"
  "toto":
    - user1: "ALL"
    - user23: "GRANT"

当然，userX 没有预先定义，我可以有 user1233 等。我可以用这段代码很容易地循环遍历字典：

  tasks:
    - debug:
        msg: "Key is {{ item }} and value is {{ mariadb_grants[item] }}"
      loop: "{{ mariadb_grants.keys() }}"

我知道了：

ok: [localhost] => (item=*.*) => {}

MSG:

Key is *.* and value is [{'user1': 'ALL, SELECT'}, {'user2': 'ALL'}]
ok: [localhost] => (item=toto) => {}

MSG:

Key is toto and value is [{'user1': 'ALL'}, {'user23': 'GRANT'}]

我正在尝试做的事情就是获取 userx 的键和值，基本上我想要这个：

My key is *.* I'm user1 and my value is "ALL, SELECT"
My key is *.* I'm user2 and my value is ALL
My key is "toto" I'm user1 and my value is ALL
[...]

似乎我无法遍历我的子元素:(

【问题讨论】：

标签： python list ansible yaml

【解决方案1】：

可以在 with_subelements 循环中使用 dict2items，例如

  - debug:
      msg: 'My key is {{ item.0.key }} I am {{ key }} and my value is "{{ val }}"'
    with_subelements:
      - "{{ mariadb_grants|dict2items }}"
      - value
    vars:
      key: "{{ item.1.keys()|first }}"
      val: "{{ item.1.values()|first }}"

给予

  msg: My key is *.* I am user1 and my value is "ALL, SELECT"
  msg: My key is *.* I am user2 and my value is "ALL"
  msg: My key is toto I am user1 and my value is "ALL"
  msg: My key is toto I am user23 and my value is "GRANT"

【讨论】：