fix: keep entity_id room_ prefix via suggested_object_id; display name remains clean

Author: DefinitelyADev

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.0.3] - 2025-09-09
+
+### Fixed
+- Ensure entity_id keeps `room_` prefix using `suggested_object_id` while keeping the display name clean (just the room name). Existing entities may need a manual rename or re-add to pick up the new object_id.
+
 ## [0.0.2] - 2025-09-09
 
 ### Changed

custom_components/rooms/manifest.json

@@ -10,5 +10,5 @@
   "iot_class": "local_push",
   "issue_tracker": "https://github.com/DefinitelyADev/room-entity/issues",
   "requirements": [],
-  "version": "0.0.1"
+  "version": "0.0.3"
 }

custom_components/rooms/sensor.py

@@ -143,14 +143,10 @@ def __init__(self, coordinator: RoomSensorCoordinator, config_entry: ConfigEntry
         """Initialize the sensor."""
         self.coordinator = coordinator
         self.config_entry = config_entry
-        self._attr_name = f"room_{config_entry.data[CONF_ROOM_NAME]}"
+        # Display name (friendly): just the room name
+        self._attr_name = str(config_entry.data.get(CONF_ROOM_NAME, ""))
         self._attr_unique_id = f"room_{config_entry.entry_id}_summary"
         self._attr_should_poll = False
-        # Ensure entity_id keeps the "room_" prefix while display name stays clean
-        room_name_val = str(config_entry.data.get(CONF_ROOM_NAME, "")).strip()
-        if room_name_val:
-            # Home Assistant will slugify this and create: sensor.room_<room_name>
-            self._attr_suggested_object_id = f"room_{room_name_val}"
 
         # Register with coordinator
         coordinator.register_summary_sensor(self)
@@ -169,6 +165,15 @@ def name(self) -> str:
         room_name = self.config_entry.data.get(CONF_ROOM_NAME, "")
         return str(room_name) if room_name else ""
 
+    @property
+    def suggested_object_id(self) -> Optional[str]:
+        """Suggest object_id so entity_id gets a room_ prefix.
+
+        Home Assistant will slugify this into the final object_id.
+        """
+        room_name = str(self.config_entry.data.get(CONF_ROOM_NAME, "")).strip()
+        return f"room_{room_name}" if room_name else None
+
     def _get_numeric_state(self, entity_id: str, default_value: float = 0.0) -> Optional[float]:
         """Get numeric state from entity, with fallback to default."""
         if not entity_id: