CODEWITHSUNDEEP
ubuntuansibleyaml
user13539846
user13539846

Reputation: 455

Transform String to Integer Ansible

I need to convert a string "1933" to integer in Ansible PB.

Code:

- set_fact:
    parent_region2: "1933"
- debug:
    msg: "{{ parent_region2 | int }}"

Expected Output: "msg": 1933

Actual Output: "msg": "1933"

Though the Actual Output have braces, it still shows as int when passing a type_debug into the code

Code with type_debug:

- set_fact:
    parent_region2: "1933"
- debug:
    msg: "{{ parent_region2 | int | type_debug}}"

Output: "msg": "int"

Please help

Upvotes: 2

Views: 15412

Answers (1)

Vladimir Botka
Vladimir Botka

Reputation: 68034

It's an integer when type_debug tells you so. The quotes are not part of the integer, of course. The format of the output depends on the callback plugin. For example, the default callback plugin (see ansible-doc -t callback default) gives JSON by default

shell> ANSIBLE_STDOUT_CALLBACK=default ansible-playbook test.yml

ok: [localhost] => {
    "msg": "1933"
}

and the yaml callback plugin (see ansible-doc -t callback yaml) gives single-quoted YAML

shell> ANSIBLE_STDOUT_CALLBACK=yaml ansible-playbook test.yml

ok: [localhost] =>
  msg: '1933'

If you want to be sure write a filter e.g.

shell> cat filter_plugins/python_type.py
def python_type(s):
    return type(s)

class FilterModule(object):
    def filters(self):
        return {
            'python_type': python_type,
        }

Then the tasks

    - debug:
        msg: "{{ parent_region2|python_type }}"
    - debug:
        msg: "{{ parent_region2|int|python_type }}"

should give

  msg: <class 'ansible.parsing.yaml.objects.AnsibleUnicode'>
  msg: <class 'int'>

Q: "Won't Jinja2 just cast it to the string after evaluating the template?"

A: Yes, the output of the Jinja template is a string. It's up to you how you format the output. For example, given the template

shell> cat test.txt.j2
{{ parent_region2|type_debug }} {{ parent_region2 }}
{{ parent_region2|int|type_debug }} {{ parent_region2|int }}

the task

    - template:
        src: test.txt.j2
        dest: test.txt

gives

shell> cat test-094.txt
AnsibleUnicode 1933
int 1933

Upvotes: 2

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