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Document JSON serialization (#3783)

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Lukas Barth 2017-10-27 17:55:07 +02:00 committed by Fabian Affolter
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source/_components/mqtt_statestream.markdown
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@ -44,4 +44,6 @@ For example, with the example configuration above, if an entity called 'light.ma
If that entity also has an attribute called `brightness`, the component will also publish the value of that attribute to `homeassistant/light/master_bedroom_dimmer/brightness`. If that entity also has an attribute called `brightness`, the component will also publish the value of that attribute to `homeassistant/light/master_bedroom_dimmer/brightness`.
All states and attributes are passed through JSON serialization before publishing. **Please note** that this causes strings to be quoted (e.g., the string 'on' will be published as '"on"'). You can access the JSON deserialized values (as well as unquoted strings) at many places by using `value_json` instead of `value`.
The last_updated and last_changed values for the entity will be published to `homeassistant/light/master_bedroom_dimmer/last_updated` and `homeassistant/light/master_bedroom_dimmer/last_changed`, respectively. The timestamps are in ISO 8601 format - for example, `2017-10-01T23:20:30.920969+00:00`. The last_updated and last_changed values for the entity will be published to `homeassistant/light/master_bedroom_dimmer/last_updated` and `homeassistant/light/master_bedroom_dimmer/last_changed`, respectively. The timestamps are in ISO 8601 format - for example, `2017-10-01T23:20:30.920969+00:00`.