Fix Interaction.channel being None in threads

discord/guild.py

@@ -586,6 +586,12 @@ class Guild(Hashable):
             channels.sort(key=lambda c: (c._sorting_bucket, c.position, c.id))
         return as_list
 
+    def _resolve_channel(self, id: Optional[int], /) -> Optional[Union[GuildChannel, Thread]]:
+        if id is None:
+            return
+
+        return self._channels.get(id) or self._threads.get(id)
+
     def get_channel(self, channel_id: int, /) -> Optional[GuildChannel]:
         """Returns a channel with the given ID.
 

discord/interactions.py

@@ -47,11 +47,14 @@ if TYPE_CHECKING:
         Interaction as InteractionPayload,
     )
     from .guild import Guild
-    from .abc import GuildChannel
     from .state import ConnectionState
     from aiohttp import ClientSession
     from .embeds import Embed
     from .ui.view import View
+    from .channel import VoiceChannel, StageChannel, TextChannel, CategoryChannel, StoreChannel
+    from .threads import Thread
+
+    InteractionChannel = Union[VoiceChannel, StageChannel, TextChannel, CategoryChannel, StoreChannel, Thread]
 
 MISSING: Any = utils.MISSING
 
@@ -145,14 +148,14 @@ class Interaction:
         return self._state and self._state._get_guild(self.guild_id)
 
     @property
-    def channel(self) -> Optional[GuildChannel]:
+    def channel(self) -> Optional[InteractionChannel]:
-        """Optional[:class:`abc.GuildChannel`]: The channel the interaction was sent from.
+        """Optional[Union[:class:`abc.GuildChannel`, :class:`Thread`]]: The channel the interaction was sent from.
 
         Note that due to a Discord limitation, DM channels are not resolved since there is
         no data to complete them.
         """
         guild = self.guild
-        return guild and guild.get_channel(self.channel_id)
+        return guild and guild._resolve_channel(self.channel_id)
 
     @utils.cached_slot_property('_cs_response')
     def response(self) -> InteractionResponse:

discord/state.py

@@ -383,7 +383,7 @@ class ConnectionState:
             channel = DMChannel._from_message(self, channel_id)
             guild = None
         else:
-            channel = guild and (guild.get_channel(channel_id) or guild.get_thread(channel_id))
+            channel = guild and guild._resolve_channel(channel_id)
 
         return channel or Object(id=channel_id), guild
 
@@ -1254,7 +1254,7 @@ class ConnectionState:
             return pm
 
         for guild in self.guilds:
-            channel = guild.get_channel(id) or guild.get_thread(id)
+            channel = guild._resolve_channel(id)
             if channel is not None:
                 return channel
 
@@ -1276,7 +1276,7 @@ class AutoShardedConnectionState(ConnectionState):
             new_guild = self._get_guild(msg.guild.id)
             if new_guild is not None and new_guild is not msg.guild:
                 channel_id = msg.channel.id
-                channel = new_guild.get_channel(channel_id) or new_guild.get_thread(channel_id) or Object(id=channel_id)
+                channel = new_guild._resolve_channel(channel_id) or Object(id=channel_id)
                 msg._rebind_cached_references(new_guild, channel)
 
     async def chunker(self, guild_id, query='', limit=0, presences=False, *, shard_id=None, nonce=None):