Obtain a user OAuth token from Slack.
Create a Slack app here.
The new app has a pre-configured User OAuth Token which you can use for most of the examples. However you may want to obtain a token for a different user, which can be accomplished as follows.
To test locally use ngrok to expose your local server to the internet.
ngrok http 4242Add the ngrok URL to the app's "Redirect URLs" under "OAuth & Permissions" in the app's settings.
Create a .env file with the following:
SLACK_CLIENT_ID=[App Client ID]
SLACK_CLIENT_SECRET=[App Client Secret]
REDIRECT_URI=[Your ngrok URL, e.g. https://...ngrok-free.app]
SCOPE=[Bot User OAuth Scopes Requested]
USER_SCOPE=[User OAuth Token Scopes Requested]
Run the example.
bundle install
bundle exec dotenv ruby oauth_v2.rb A browser window will open to complete the OAuth flow.