无法从 json 输出中提取值 [英] Failed to extract value from json output

问题描述

我正在尝试从以下列表中提取 snapshot_policy_schedules.snapshot_schedule_info 的值:

I am trying to extract the value of snapshot_policy_schedules.snapshot_schedule_info from the below list:

[
        {
        'enabled': 'true', 
        'policy': 'default-DR', 
        'policy_owner': 'vserver-admin', 
        'snapshot_policy_schedules': {
                'snapshot_schedule_info': [
                        {
                                'count': '6', 
                                'prefix': 'hourly', 
                                'schedule': 'hourly', 
                                'snapmirror_label': '-'
                        }, 
                        {
                                'count': '2', 
                                'prefix': 'daily', 
                                'schedule': 'daily', 
                                'snapmirror_label': 'daily'
                        }, 
                        {
                                'count': '2', 
                                'prefix': 'weekly', 
                                'schedule': 'weekly', 
                                'snapmirror_label': 'weekly'
                        }
                ]
        },
        'total_schedules': '3', 
        'vserver_name': 'net'
        }
]

但是我收到错误:

fatal: [localhost]: FAILED! => {"changed": false, "msg": "AnsibleUndefinedVariable: 'list object' has no attribute 'snapshot_policy_schedules'"}

这是我的代码:

 {% for schedule in policy.snapshot_policy_schedules.snapshot_schedule_info %}
            {% if schedule.schedule == 'weekly' %}
                {% set policy_weekly = schedule.count %}
            {% endif %}

            {% if schedule.schedule == 'daily' %}
                {% set policy_daily = schedule.count %}
            {% endif %}

            {% if schedule.schedule == 'hourly' %}
                {% set policy_hourly = schedule.count %}
            {% endif %}
        {% endfor %}

推荐答案

Q: "'list object' has no attribute 'snapshot_policy_schedules'"

Q: "'list object' has no attribute 'snapshot_policy_schedules'"

A:'list object'，即变量 policy 是一个列表.您可能想要解决第一个元素

A: The 'list object' i.e. the variable policy is a list. You probably want to address the first element

{% for schedule in policy.0.snapshot_policy_schedules.snapshot_schedule_info %}

<小时>

例如，简化的 JSON

---

For example, simplified JSON

{
    "policy": [{
    "schedules": {
        "info": [
        {"count": "6","prefix": "hourly"},
        {"count": "2","prefix": "daily"},
        {"count": "2","prefix": "weekly"}]
        }
    }]
}

和简化的Jinja

    - debug:
        msg: |-
          {% for item in policy.0.schedules.info %}
          {{ item.count }} {{ item.prefix }}
          {% endfor %}

给予

  msg: |-
    6 hourly
    2 daily
    2 weekly

这篇关于无法从 json 输出中提取值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！