How I can get DeviceEntry by entity_id in python?

nick2525 · February 8, 2021, 4:50pm

I get hass: core.HomeAssistant in my custom component. I know, what device can have many entities. I know entity, for example, media_player.nexus_player, how I can get DeviceEntry? I need it for manufacturer, sw_version and another info.

postlund · February 8, 2021, 6:30pm

I believe that you can get it by first retrieving the entity from the entity registry, extract device_id and use that to pull the device from the device registry. Some kind of pseudo code (not tested, but it gives the idea):

from homeassistant.helpers import entity_registry as er
from homeassistant.helpers import device_registry as dr

entity_id = "sensor.foobar"

entity_reg = er.async_get_registry(hass)
entry = entity_reg.async_get(entity_id)

dev_reg = dr.async_get_registry(hass)
device = dev_reg.async_get(entry.device_id)
print(device.model)

References:

github.com

home-assistant/core/blob/829131fe51bd09ff9032766c57bb293c89db7614/homeassistant/helpers/entity_registry.py

"""Provide a registry to track entity IDs.

The Entity Registry keeps a registry of entities. Entities are uniquely
identified by their domain, platform and a unique id provided by that platform.

The Entity Registry will persist itself 10 seconds after a new entity is
registered. Registering a new entity while a timer is in progress resets the
timer.
"""
from collections import OrderedDict
import logging
from typing import (
    TYPE_CHECKING,
    Any,
    Callable,
    Dict,
    Iterable,
    List,
    Optional,
    Tuple,

This file has been truncated. show original

github.com

home-assistant/core/blob/829131fe51bd09ff9032766c57bb293c89db7614/homeassistant/helpers/device_registry.py

"""Provide a way to connect entities belonging to one device."""
from collections import OrderedDict
import logging
import time
from typing import TYPE_CHECKING, Any, Dict, List, Optional, Set, Tuple, Union

import attr

from homeassistant.const import EVENT_HOMEASSISTANT_STARTED
from homeassistant.core import Event, callback
import homeassistant.util.uuid as uuid_util

from .debounce import Debouncer
from .singleton import singleton
from .typing import UNDEFINED, HomeAssistantType, UndefinedType

# mypy: disallow_any_generics

if TYPE_CHECKING:
    from . import entity_registry

This file has been truncated. show original