16 lines
817 B
Markdown
16 lines
817 B
Markdown
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title: "Handling states"
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---
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It is the responsibility of the component to maintain the states of the devices in your domain. Each device should be a single state and, if possible, a group should be provided that tracks the combined state of the devices.
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A state can have several attributes that will help the frontend in displaying your state:
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- `friendly_name`: this name will be used as the name of the device
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- `entity_picture`: this picture will be shown instead of the domain icon
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- `unit_of_measurement`: this will be appended to the state in the interface
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- `hidden`: This is a suggestion to the frontend on if the state should be hidden
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These attributes are defined in [homeassistant.helpers.entity](https://github.com/home-assistant/home-assistant/blob/master/homeassistant/helpers/entity.py#L180).
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