Command Error Event

[IIDarkNessYT]

Help me please! I am doing slash commands in the bot, and I need to make an event on command error, as well as recognize the error (for example, when a person has no rights (Missing Permissions)). Please tell me the code!

Update: I'm use slash-commands (app commands)

[LostLuma]

You can attach an error handler to the CommandTree of your client by either using the error decorator or subclassing CommandTree and overwriting the on_error callback. Here is an example of the former:

client = discord.Client(...)
tree = discord.app_commands.CommandTree(client)


@tree.error
async def on_app_command_error(interaction: discord.Interaction, error: discord.app_commands.AppCommandError) -> None:
    ...

You can check which exact subclass of AppCommandError was raised here to handle it, they are listed in the Interactions API Documentation.

[IIDarkNessYT]

Thank you!

[M9-SD]

here is an example that handles app_commands.checks.cooldown

@tree.error
async def on_app_command_error(interaction: discord.Interaction, error: discord.app_commands.AppCommandError) -> None:
    if isinstance(error, app_commands.errors.CommandOnCooldown):
        await interaction.response.send_message(f'Command "{interaction.command.name}" is on cooldown, you can use it in {round(error.retry_after, 2)} seconds.', ephemeral=True)

[Soheab]

here is an example that handles app_commands.checks.cooldown

@tree.error
async def on_app_command_error(interaction: discord.Interaction, error: discord.app_commands.AppCommandError) -> None:
    if isinstance(error, app_commands.errors.CommandOnCooldown):
        await interaction.response.send_message(f'Command "{interaction.command.name}" is on cooldown, you can use it in {round(error.retry_after, 2)} seconds.', ephemeral=True)

I would not recommend ignoring all exceptions except app_commands.CommandOnCooldown even if it's an example, it's a common problem in the dpy help channels where users copy any code to see and especially from an answered discussion.