Unknown block type when decoding chat.postMessage response

[Leonid99]

When doing (event API in socket mode):

        let response = post_message(&socket_mode.api_client, &request, &socket_mode.bot_token)
            .await
            .expect("post message api error.");

I am getting the following error:

thread 'main' panicked at 'post message api error.: SerdeJsonError(Error("unknown variant `rich_text`, expected one of `actions`, `context`, `divider`, `file`, `header`, `image`, `input`, `section`", line: 1, column: 682))', src/main.rs:60:14

The list of variants seems to suggest that there is an unsupported block type (the documentation doesn't list "rich_text" as a possible Block type).

This is happening when I am sending a message to the bot I'm working on from the normal Slack client.

[Leonid99]

{
    "ok": true,
    "channel": "DKVSHS1HC",
    "ts": "1653756786.810519",
    "message": {
        "bot_id": "BKTND7QN4",
        "type": "message",
        "text": "Hello World!!",
        "user": "UKGA4ARMY",
        "ts": "1653756786.810519",
        "app_id": "AJ9649K6F",
        "team": "T3GV5VB0D",
        "bot_profile": {
            "id": "BKTND7QN4",
            "app_id": "AJ9649K6F",
            "name": "Rookie",
            "icons": {
                "image_36": "https://avatars.slack-edge.com/2019-06-23/673287830948_0affbbb86beca00aa028_36.png",
                "image_48": "https://avatars.slack-edge.com/2019-06-23/673287830948_0affbbb86beca00aa028_48.png",
                "image_72": "https://avatars.slack-edge.com/2019-06-23/673287830948_0affbbb86beca00aa028_72.png"
            },
            "deleted": false,
            "updated": 1561328910,
            "team_id": "T3GV5VB0D"
        },
        "blocks": [
            {
                "type": "rich_text",
                "block_id": "Zjof6",
                "elements": [
                    {
                        "type": "rich_text_section",
                        "elements": [
                            {
                                "type": "text",
                                "text": "Hello World!!"
                            }
                        ]
                    }
                ]
            }
        ]
    }
}

[Leonid99]

I am a complete rust newb, but what I don't understand is why it is an error. From the documentation, it sounds like serde should ignore json values it is not aware of, unless #[serde(deny_unknown_fields)] is provided.

[dselans]

@Leonid99 did you figure out a way around this?

[dselans]

I went ahead and forked + added a minor patch for the rich_text Block variant as it was bugging me 😄

https://github.com/dselans/slack-rust