Jinja - Как передать динамический диапазон выражению?

Given the file

shell> cat /tmp/fruits.csv 
id,name,quantity,type
1,apple,10,fruit
2,orange,20,fruit
3,carrot,5,veg
4,beetroot,2,veg
5,onion,3,veg
6,tomato,4,both
7,pear,4,fruit
8,banana,6,fruit
9,persimon,4,fruit
10,guava,4,fruit
11,pepper,4,veg
12,potato,5,veg
13,cherry,5,fruit

Read the file and create a dictionary by the key id

    - read_csv:
        path: /tmp/fruits.csv
        key: id
      register: fruits

gives

  fruits.dict:
    '1': {id: '1', name: apple, quantity: '10', type: fruit}
    '10': {id: '10', name: guava, quantity: '4', type: fruit}
    '11': {id: '11', name: pepper, quantity: '4', type: veg}
    '12': {id: '12', name: potato, quantity: '5', type: veg}
    '13': {id: '13', name: cherry, quantity: '5', type: fruit}
    '2': {id: '2', name: orange, quantity: '20', type: fruit}
    '3': {id: '3', name: carrot, quantity: '5', type: veg}
    '4': {id: '4', name: beetroot, quantity: '2', type: veg}
    '5': {id: '5', name: onion, quantity: '3', type: veg}
    '6': {id: '6', name: tomato, quantity: '4', type: both}
    '7': {id: '7', name: pear, quantity: '4', type: fruit}
    '8': {id: '8', name: banana, quantity: '6', type: fruit}
    '9': {id: '9', name: persimon, quantity: '4', type: fruit}

• Example of a complete playbook for testing

shell> cat pb.yml
- hosts: localhost
  vars:
    input_range: 2
    by_type: "{{ fruits.dict.values()|groupby('type') }}"
    my_dict: "{{ dict(by_type|map('first')|list|
                      zip(by_type|map('last')|
                                  map('map', attribute='name')|list)) }}"
    my_list: |
      {% for batch in my_dict[type]|batch(input_range|int) %}
        - {{ batch }}
      {% endfor %}
      
  tasks:
    - read_csv:
        path: /tmp/fruits.csv
        key: id
      register: fruits
    - debug:
        var: fruits.dict|to_yaml
    - debug:
        var: by_type|to_yaml
    - debug:
        var: my_dict|to_yaml

    - debug:
        msg: "{{ my_list }}"
      loop: "{{ my_dict.keys()|list }}"
      vars:
        type: "{{ item }}"

    - set_fact:
        my_list_veg: "{{ my_list }}"
      vars:
        type: veg
        input_range: 3
    - debug:
        var: my_list_veg

• You can override input_range from the command line, e.g.

shell> ansible-playbook pb.yml -e input_range=3

• Q: "I needed a combination of 'name'-'type'-'id' as my 'my_list'"

A: Create a dictionary with all attributes

  my_dict: "{{ dict(by_type) }}"

gives

  my_dict:
    both:
    - {id: '6', name: tomato, quantity: '4', type: both}
    fruit:
    - {id: '1', name: apple, quantity: '10', type: fruit}
    - {id: '2', name: orange, quantity: '20', type: fruit}
    - {id: '7', name: pear, quantity: '4', type: fruit}
    - {id: '8', name: banana, quantity: '6', type: fruit}
    - {id: '9', name: persimon, quantity: '4', type: fruit}
    - {id: '10', name: guava, quantity: '4', type: fruit}
    - {id: '13', name: cherry, quantity: '5', type: fruit}
    veg:
    - {id: '3', name: carrot, quantity: '5', type: veg}
    - {id: '4', name: beetroot, quantity: '2', type: veg}
    - {id: '5', name: onion, quantity: '3', type: veg}
    - {id: '11', name: pepper, quantity: '4', type: veg}
    - {id: '12', name: potato, quantity: '5', type: veg}

Then, select the attributes you want. For example, select the attributes id and name and create the template

    my_list: |
      {% for batch in my_dict[type]|batch(input_range|int) %}
      {% for i in batch %}
      - id: {{ i.id }}
        name: {{ i.name }}
      {% endfor %}
      {% endfor %}

Then create specific lists, for example

    - set_fact:
        my_list_veg: "{{ my_list|from_yaml }}"
      vars:
        type: veg
        input_range: 3
    - debug:
        var: my_list_veg

gives

  my_list_veg:
    - {id: 3, name: carrot}
    - {id: 4, name: beetroot}
    - {id: 5, name: onion}
    - {id: 11, name: pepper}
    - {id: 12, name: potato}