根据 ansible 中的条件将项目添加到列表中 [英] Add an item to a list dependent on a conditional in ansible
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问题描述
我想根据满足的某些条件将一个项目添加到 ansible 列表中.
I would like to add an item to a list in ansible dependent on some condition being met.
这不起作用:
some_dictionary:
app:
- something
- something else
- something conditional # only want this item when some_condition == True
when: some_condition
我不确定这样做的正确方法.我可以以某种方式创建一个新任务以添加到 some_dictionary
中的 app
值吗?
I am not sure of the correct way to do this. Can I create a new task to add to the app
value in the some_dictionary
somehow?
推荐答案
我会尽量避免这种情况,但如果条件列表是绝对必要的,你可以使用这个技巧:
I'd try to avoid this, but if conditional list is absolutely necessary, you can use this trick:
---
- hosts: localhost
gather_facts: no
vars:
a: 1
b: 1
c: 2
some_dictionary:
app: "{{ '[\"something\", \"something else\"' + (a + b == c) | ternary(', \"something conditional\"',' ') + ']' }}"
tasks:
- debug: var=some_dictionary.app
它将形成一个类似数组的字符串 (["item1","item2","item3"]
) 并且 ansible 变量模板器将在分配给 app<之前将其转换为列表/代码>.
It will form an array-like string (["item1","item2","item3"]
) and ansible variable templator will convert it into list before assigning to app
.
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