Summary

The library offers multiple ways of writing v2 components using LayoutView, but they have a weird behavior when nesting (LayoutView > Container > ActionRow > Button for example), a lot of the attributes and features can be missing.

Reproduction Steps

I have noticed two major issues:

• The parent and view attributes of a nested item are usually set to None in runtime
• Special methods like interaction_check do not apply to nested items (this may be a design choice, but it deserves a warning in the docs)

Minimal Reproducible Code

from discord.ui import ActionRow, Container, LayoutView, button

class MyRow(ActionRow):
  async def interaction_check(self, interaction):
    print("Hi from ActionRow!")
    return True

  @button(label="hi")
  async def mybutton(self, interaction, button):
    print(f"{self.view=}")  # None
    print(f"{self.parent=}")  # None
    print(f"{button.view=}")  # None
    print(f"{button.parent=}")  # MyRow
    print(f"{button.parent.view=}")  # None
    print(f"{button.parent.parent=}")  # None

class MyContainer(Container):
  async def interaction_check(self, interaction):
    print("Hi from Container!")  # Never reached
    return True

  row = MyRow()

class MyView(LayoutView):
  async def interaction_check(self, interaction):
    print("Hi from LayoutView!")
    return True

  container = MyContainer()

view = MyView()
await ctx.send(view=view)

Expected Results

Hi from ActionRow!
Hi from Container!
Hi from LayoutView!
self.view=<MyView timeout=180.0 children=1>
self.parent=<MyRow children=1>
button.view=<MyView timeout=180.0 children=1>
button.parent=<MyRow children=1>
button.parent.view=<MyView timeout=180.0 children=1>
button.parent.parent=<MyContainer children=1>

Actual Results

In console:

Hi from ActionRow!
Hi from LayoutView!
self.view=None
self.parent=None
button.view=None
button.parent=<MyRow children=1>
button.parent.view=None
button.parent.parent=None

Intents

guilds, guild_messages, emojis_and_stickers

System Information

• Python v3.13.2-final
• discord.py v2.6.4-final
• aiohttp v3.12.14
• system info: Linux 6.11.0-25-generic Print to stderr in on_error #25~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 15 17:20:50 UTC 2

Checklist

• I have searched the open issues for duplicates.
• I have shown the entire traceback, if possible.
• I have removed my token from display, if visible.

Additional Context

I have already discussed the issue of unset view and parent attributes in the Discord server previously, there are dirty ways around it but it's not critical.

However, I really wasn't expecting MyContainer's interaction_check to be skipped in this context, and made me deploy a pretty large vulnerability on my bot. I blame myself for that, I should have tested more thoroughly, but better avoid the confusion for others