Using cogs with app_commands.command()

[hitblast]

What is the proper way to create application commands inside a cog (commands.Cog)? I'm new to the syntax of discord.py 2.0.0 so I'm looking for some possible answers to this silly question :P

[LostLuma]

You can create commands inside cogs by simply defining them inside and adding the self argument, similarly to how it works in the commands extension:

@discord.app_commands.command()
async def upload(interaction: discord.Interaction, file: discord.Attachment) -> None:
    ...

class Example(commands.Cog):
    @discord.app_commands.command()
    async def upload(interaction: discord.Interaction, file: discord.Attachment) -> None:
        ....

When the cog is loaded it will be added to the bot's command tree, and you will be able to use and sync it just like all other app commands.

[hitblast]

Is there any way to develop a bot only for application commands? I'm not sure I understand the question, no one is forcing you to add text commands to your bot? Additionally, you can pass help_command=None to the bot constructor to also remove the default help command.

What would be the case for cogs when we want to handle errors with them? There's a new cog_app_command_error method you can add to your cogs to handle app command errors.

Well speaking of the first question, either of these two classes: commands.Bot and commands.AutoShardedBot are requiring me to pass a prefix, on the other hand it's not when I'm using discord.Client.

[Soheab]

You can pass an empty iterable / None to the command_prefix= keyword argument, but that won't disable the command parsing etc.

[atraboulsi27]

@LostLuma I know this is an old issue but was there an official implementation for this as of today? I feel it is a very basic feature to have especially if such a thing is already implemented through before_invoke with commands not part of a Cog. It would be also helpful to have the ability to wrap the Cog itself rather than repeating the decorator inside its functions (in cases where I need to have a global middeware)

Your solution worked perfectly though thanks! :)

[LostLuma]

Not as far as I'm aware, but I've also not kept up with discord.py development as much recently.

[atraboulsi27]

Deal, thanks