Allow use of Selector in ObjectSelector fields

homeassistant/helpers/selector.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 from collections.abc import Callable, Mapping, Sequence
+from copy import deepcopy
 from enum import StrEnum
 from functools import cache
 import importlib
@@ -1159,7 +1160,7 @@ class ObjectSelectorField(TypedDict):
 
     label: str
     required: bool
-    selector: dict[str, Any]
+    selector: Required[Selector | dict[str, Any]]
 
 
 class ObjectSelectorConfig(BaseSelectorConfig):
@@ -1168,7 +1169,7 @@ class ObjectSelectorConfig(BaseSelectorConfig):
     fields: dict[str, ObjectSelectorField]
     multiple: bool
     label_field: str
-    description_field: bool
+    description_field: str
     translation_key: str
 
 
@@ -1182,7 +1183,7 @@ class ObjectSelector(Selector[ObjectSelectorConfig]):
         {
             vol.Optional("fields"): {
                 str: {
-                    vol.Required("selector"): dict,
+                    vol.Required("selector"): vol.Any(Selector, dict),
                     vol.Optional("required"): bool,
                     vol.Optional("label"): str,
                 }
@@ -1198,6 +1199,17 @@ class ObjectSelector(Selector[ObjectSelectorConfig]):
         """Instantiate a selector."""
         super().__init__(config)
 
+    def serialize(self) -> dict[str, dict[str, ObjectSelectorConfig]]:
+        """Serialize ObjectSelector for voluptuous_serialize."""
+        _config = deepcopy(self.config)
+        if "fields" in _config:
+            for items in _config["fields"].values():
+                if isinstance(items["selector"], Selector):
+                    items["selector"] = {
+                        items["selector"].selector_type: items["selector"].config
+                    }
+        return {"selector": {self.selector_type: _config}}
+
     def __call__(self, data: Any) -> Any:
         """Validate the passed selection."""
         return data