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HA version 0.64.0 voluptuous config check. (#4773)

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* HA version 0.64.0 voluptuous config check.

* Update
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Jerry Workman 2018-04-06 14:07:52 -04:00 committed by Fabian Affolter
parent d2c7a2fe77
commit 243f02dc3e
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source/developers/development_validation.markdown
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@ -28,6 +28,7 @@ Some things to keep in mind:
- Use the constants defined in `const.py`
- Import `PLATFORM_SCHEMA` from the parent component and extend it
- Preferred order is `required` first and `optional` second
- Starting with Home Assistant 0.64 `voluptuous` requires default values for optional configuration keys to be valid values. Don't use a default which is `None` like `vol.Optional(CONF_SOMETHING, default=None): cv.string`, set the default to `default=""` if required.
### {% linkable_title Snippets %}