DOCUMENTATION:
  name: to_nice_json
  author: core team
  version_added: 'historical'
  short_description: Convert variable to 'nicely formatted' JSON string
  description:
    - Converts an Ansible variable into a 'nicely formatted' JSON string representation
    - This filter functions as a wrapper to the Python C(json.dumps) function.
    - Ansible automatically converts JSON strings into variable structures so this plugin is used to forcibly retain a JSON string.
  options:
    _input:
      description: A variable or expression that returns a data structure.
      type: raw
      required: true
    vault_to_text:
      description: Toggle to either unvault a vault or create the JSON version of a vaulted object.
      type: bool
      default: True
      version_added: '2.9'
    preprocess_unsafe:
      description: Toggle to represent unsafe values directly in JSON or create a unsafe object in JSON.
      type: bool
      default: True
      version_added: '2.9'
    allow_nan:
      description: When C(False), strict adherence to float value limits of the JSON specification, so C(nan), C(inf) and C(-inf) values will produce errors.
                   When C(True), JavaScript equivalents will be used (C(NaN), C(Infinity), C(-Infinity)).
      default: True
      type: bool
    check_circular:
      description: Controls the usage of the internal circular reference detection, if off can result in overflow errors.
      default: True
      type: bool
    ensure_ascii:
      description: Escapes all non ASCII characters.
      default: True
      type: bool
    skipkeys:
      description: If C(True), keys that are not basic Python types will be skipped.
      default: False
      type: bool
  notes:
    - Both I(vault_to_text) and I(preprocess_unsafe) defaulted to C(False) between Ansible 2.9 and 2.12.
    - 'These parameters to C(json.dumps) will be ignored, they are overriden for internal use: I(cls), I(default), I(indent), I(separators), I(sort_keys).'

EXAMPLES: |
  # dump variable in a template to create a nicely formatted JSON document
  {{ docker_config|to_nice_json }}


RETURN:
  _value:
    description: The 'nicely formatted' JSON serialized string representing the variable structure inputted.
    type: string