I was able to create usergroups and update usergroups.
But there was no method in slack document to post a message to usergroup
I found this function chat.postMessage but from the arguments it takes I couldn't find usergroups as an option to post the message to.
https://api.slack.com/methods/chat.postMessage
Any help figuring out the appropriate slack api function is appreciated.
chat.postMessage is a correct way to post message into various conversations, i.e. public channel, private channel, DM or multi-person DM and in the channel argument you should provide the correct conversation ID, usually starting from C**, G**, D** followed with alphanumeric symbols. Slack usergroups have S** ID and are not considered as conversations. If you'll try to call chat.postMessage with channel=S** argument you'll get a channel_not_found error.
Slack user groups are usually created to make easier users separation for mentioning or mass-inviting them into channels. Most typical, for mentioning. However, their mentioning is kind specific and described in the Slack documentation here: https://api.slack.com/reference/surfaces/formatting#mentioning-groups, i.e. you should include <!subteam^GROUP_ID> in your text argument or in your text "type": "mrkdwn" block.
For example, this code:
import logging
from slack_sdk import WebClient
from slack_sdk.errors import SlackApiError
log = logging.getLogger(__name__)
if __name__ == "__main__":
client = WebClient(token="xox**")
try:
pt_mention = client.chat_postMessage(channel="C**",
text="Mentioning the <!subteam^S**> user group in plain text.")
print(pt_mention)
block_mention = client.chat_postMessage(channel="C**",
# text="Mentioning the <!subteam^S**> user group in the block.",
blocks=[
{
"type": "section",
"text": {
"type": "mrkdwn",
"text": "Mentioning the <!subteam^S**> user group in the block."
}
}
])
print(block_mention)
except SlackApiError as e:
logging.exception(f"Error occurred: {e.response['error']}")
produces two sequential messages into the C** Slack channel where it mentions @test user group with ID S**: on this screenshot.
However, it is not possible to invite a user group into Slack channel with conversations.invite call, you should use another method, described here.
