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Feanil Patel 892e230514 Don't convert nulls to strings. 
This change is similar to https://github.com/ansible/ansible/pull/10465

It extends the logic there to also support none types.  Right now if you have
a '!!null' in yaml, and that var gets passed around, it will get converted to
a string.

eg. defaults/main.yml
```
ENABLE_AWESOME_FEATURE: !!null # Yaml Null
OTHER_CONFIG:
  secret1: "so_secret"
  secret2: "even_more_secret"

CONFIG:
  hostname: "some_hostname"
  features:
    awesame_feature: "{{ ENABLE_AWESOME_FEATURE}}"
  secrets: "{{ OTHER_CONFIG }}"
```

If you output `CONFIG` to json or yaml, the feature flag would get represented in the output
as a string instead of as a null, but secrets would get represented as a dictionary.  This is
a mis-match in behaviour where some "types" are retained and others are not.  This change
should fix the issue.

I also updated the template test to test for this and made the changes to v2.

Added a changelog entry specifically for the change from empty string to null as the default.

Made the null representation configurable.

It still defaults to the python NoneType but can be overriden to be an emptystring by updating
the DEFAULT_NULL_REPRESENTATION config.
2015-08-19 18:35:07 -04:00
..
ansible Don't convert nulls to strings. 2015-08-19 18:35:07 -04:00
bin Making the switch to v2 2015-05-03 21:47:26 -05:00
hacking Add the hacking directory to v1 2015-06-03 14:53:19 -05:00
tests Merge branch 'v2_final' into devel_switch_v2 2015-05-28 15:26:03 -05:00
README.md Update README.md 2015-08-13 15:50:33 +01:00

README.md

This is dead code, it is here for convenience for those testing current devel so as to ascertain if a bug was introduced in the v2 rewrite or was preexisting in the 1.x codebase. Using this code should be equivalent of checking out the v1_last tag, which was devel at a point between 1.9.1 and 1.9.2 releases. The stable-1.9 is the maintenance branch for the 1.9.x code, which might continue to diverge from the v1/ tree as bugs get fixed.

DO NOT:

  • use this code as reference
  • make PRs against this code
  • expect this code to be shipped with the 2.0 version of ansible