Getting A's ID from B's Reply in Discord.py

Описание: Learn how to fetch `A's ID` from `B's` message in Discord using `discord.py`. This guide breaks down the solution step by step, illustrating how to manage message references effectively.
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This video is based on the question https://stackoverflow.com/q/67031513/ asked by the user 'BrightBulb123' ( https://stackoverflow.com/u/14681028/ ) and on the answer https://stackoverflow.com/a/67032701/ provided by the user 'BrightBulb123' ( https://stackoverflow.com/u/14681028/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Get A's ID from B's Message in Discord.py

Creating a Discord bot can be quite a rewarding experience, but it can also come with its own set of challenges. One common problem that many developers encounter is how to determine if a message sent by one user (let's call them "B") is a response to a specific message from another user (let's say "A"). In this guide, we will explore a common scenario involving message references in Discord.py and provide a detailed solution to this issue.

The Problem

Imagine you're developing a bot that automates interactions in a game on Discord, and you want your bot to respond intelligently when a player is replying to another user's (A's) message. You'd want the bot to check if the message it received is a reply to a specific message from user A.

Here's the challenge you're facing:

You have a bot that, through a specific command, generates a reply

You need to identify if that reply is directed at a specific previous message from user A

The error you face is due to a misconception about how message references work in Discord.py

Example of the Issue

A code snippet you might be working with could look something like this:

[[See Video to Reveal this Text or Code Snippet]]

The problem arises because the line trying to access author.id on reference.message_id is incorrect. The reference.message_id is an integer (the message's ID) and does not possess an author attribute.

The Solution

Fortunately, there is a straightforward workaround to achieve your goal. You will need to fetch the original message that is being replied to, using the message's channel and ID, rather than trying to access it directly from the reference.

Here's How Here’s the Corrected Code:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Solution:

Check Message Author: First, we check if the author of the message is the bot itself.

Retrieve the Guild and Channel: Next, we fetch the guild (server) and channel using guildId and the channel ID from the message reference.

Fetch the Original Message: Using channel.fetch_message(), we retrieve the original message that the reply is pointing to. This is where most issues lie, as you need to ensure both the channel and message ID are correctly referenced.

Compare Authors: Now, we can safely check the author of the original message to see if it matches user A (myId).

Send Response: If all conditions are met, the bot can then process further or send a response to the channel.

Conclusion

By following these steps, you can effectively make your Discord bot responsive in conversations and ensure that it behaves as expected when handling replies. The key takeaway here is to understand how message references work and how to manipulate them appropriately to access the information you need.

If you're facing similar challenges in your Discord bot development, I hope this solution provides some clarity and gets you back on track. Happy coding!