feat: use a PartialChannel object when the Channel of an interaction is in a guild but not cached

Signed-off-by: Mathieu Corsham <McCuber04@outlook.de>

Author: mccoderpy

discord/interactions.py

@@ -32,7 +32,7 @@
 from typing_extensions import Literal
 
 from . import abc, utils
-from .channel import _channel_factory, DMChannel, TextChannel, ThreadChannel, VoiceChannel, ForumPost
+from .channel import _channel_factory, DMChannel, TextChannel, ThreadChannel, VoiceChannel, ForumPost, PartialMessageable
 from .components import *
 from .embeds import Embed
 from .enums import (
@@ -669,7 +669,8 @@ async def edit(
 
         state = self._state
         if not self.channel:
-            self.channel = self._state.add_dm_channel(data=await self._http.get_channel(self.channel_id))
+            ch = await self._http.get_channel(self.channel_id)
+            self.channel = _channel_factory(ch['type'])[0](state=state, data=ch)
 
         if response_type is MISSING:
             params = handle_message_parameters(
@@ -978,8 +979,8 @@ def author(self) -> Union[Member, User]:
         return self.member if self.member is not None else self.user
 
     @property
-    def channel(self) -> Union[DMChannel, TextChannel, ThreadChannel, ForumPost, VoiceChannel]:
-        """Union[:class:`~discord.TextChannel`, :class:`~discord.ThreadChannel`, :class:`~discord.DMChannel`, :class:`~discord.VoiceChannel`]:
+    def channel(self) -> Union[DMChannel, TextChannel, ThreadChannel, ForumPost, VoiceChannel, PartialMessageable]:
+        """Union[:class:`~discord.TextChannel`, :class:`~discord.ThreadChannel`, :class:`~discord.DMChannel`, :class:`~discord.VoiceChannel`, :class:`~discord.ForumPost`, :class:`~discord.PartialMessageable`
         The channel where the interaction was invoked in.
         """
         return getattr(self, '_channel', self.guild.get_channel(self.channel_id) if self.guild_id else self._state.get_channel(self.channel_id))

discord/state.py

@@ -592,7 +592,7 @@ def parse_interaction_create(self, data):
         interaction = BaseInteraction.from_type(state=self, data=data)
         interaction.user = self.store_user(interaction._user)
         if interaction.guild_id:
-            interaction.channel = interaction.guild.get_channel(interaction.channel_id)
+            interaction.channel = interaction.guild.get_channel(interaction.channel_id) or PartialMessageable(id=interaction.channel_id, state=self)
             interaction.member = interaction.guild.get_member(interaction.user_id)
             if interaction.member is None:
                 # This can only be the case if ``GUILD_MEMBERS`` Intents are not enabled or the member is not in the cache right now.