Ansible：如何在 json_query 中使用一些分隔符拆分 json 数据

Question

Im making some ansible playbook to output json data.

I got json data through uri module. I saved the data as a variable and even managed to extract the desired array with json_query.

---
- name: get lti id
  hosts: web
  become: yes

  tasks:
  - name : "get lti"
    
    ...

  - name : "print returned json"
    debug:
            var: data.json

  - name : "write var to file"
    copy:
            content: " {{ data.json | json_query('[*].{id:id, url:url}') | to_nice_json }}"
            dest: "/data/test.json"

and my result json file is below one.

 [
    {
        "id": 7,
        "url": "https://template.com/test/lti/admin/policy/red"
    },
    {
        "id": 8,
        "url": "https://template.com/test/lti/admin/blue"
    },
    {
        "id": 10,
        "url": "https://template.com/test/lti/yellow"
    }
]

But I'd like to additionally extract only the last part of the url here. ex) red, blue

so I tried to change my playbook like this

---
- name: get lti id
  hosts: web
  become: yes

  tasks:

    ...

  - name : "print returned json"
    debug:
            var: data.json

  - name : "write var to file"
    copy:
            content: " {{ data.json | json_query('[*].{id:id, url:url}')| url.split('/')[-1] | to_nice_json }}"
            dest: "/data/test.json"

but this makes fatal error

TASK [write var to file] ******************************************************************************************************** fatal: [lms-web-template]: FAILED: => {"msg": "template error while templating string, expected token 'end of print statement'. got '[': String. {{ data.json | json_query('[*]:{id,id: url.url}') | url.split('/')[-1] | to_nice_json }}"}

I want to get the result like below.

 [
    {
        "id": 7,
        "url": "red"
    },
    {
        "id": 8,
        "url": "blue"
    },
    {
        "id": 10,
        "url": "yellow"
    }
]

I need your help... Thank you:)

Answer 1

Modify the list in a standalone task. For example

    - set_fact:
        content2: "{{ content2|default([]) + [item|combine({'url':url})] }}" 
      loop: "{{ content }}"
      vars:
        url: "{{ item.url.split('/')|last }}"
    - copy:
        content: "{{ content2|to_nice_json }}"
        dest: data.json

gives

shell> cat data.json 
[
    {
        "id": "7,",
        "url": "red"
    },
    {
        "id": "8,",
        "url": "blue"
    },
    {
        "id": "10,",
        "url": "yellow"
    }
]

---

The next option is the modification of the data in Jinja. For example

    - copy:
        content: |
          {% for item in content %}
          - id: {{ item.id }}
            url: {{ item.url.split('/')|last }}
          {% endfor %}
        dest: data.yml
    - debug:
        msg: "{{ lookup('file', 'data.yml')|from_yaml|to_nice_json }}"

gives

    [
        {
            "id": "7,",
            "url": "red"
        },
        {
            "id": "8,",
            "url": "blue"
        },
        {
            "id": "10,",
            "url": "yellow"
        }
    ]