Update Django example app - ref #324

Author: seratch

examples/django/README.md

@@ -1,7 +1,11 @@
+Follow the instructions [here](https://slack.dev/bolt-python/concepts#authenticating-oauth) for configuring OAuth flow supported Slack apps. This example works with the default env variables such as `SLACK_CLIENT_ID`, `SLACK_CLIENT_SECRET`, `SLACK_SCOPES`, `SLACK_SIGNING_SECRET`, and so forth.
+
 ```
 pip install -r requirements.txt
-export SLACK_SIGNING_SECRET=***
-export SLACK_BOT_TOKEN=xoxb-***
+export SLACK_CLIENT_ID=
+export SLACK_CLIENT_SECRET=
+export SLACK_SCOPES=commands.chat:write
+export SLACK_SIGNING_SECRET=
 
 python manage.py migrate
 python manage.py runserver 0.0.0.0:3000

examples/django/slackapp/models.py

@@ -231,10 +231,11 @@ def consume(self, state: str) -> bool:
 from slack_bolt.oauth.oauth_settings import OAuthSettings
 
 logger = logging.getLogger(__name__)
-client_id, client_secret, signing_secret = (
+client_id, client_secret, signing_secret, scopes = (
     os.environ["SLACK_CLIENT_ID"],
     os.environ["SLACK_CLIENT_SECRET"],
     os.environ["SLACK_SIGNING_SECRET"],
+    os.environ.get("SLACK_SCOPES", "commands").split(","),
 )
 
 app = App(
@@ -246,6 +247,7 @@ def consume(self, state: str) -> bool:
     oauth_settings=OAuthSettings(
         client_id=client_id,
         client_secret=client_secret,
+        scopes=scopes,
         state_store=DjangoOAuthStateStore(
             expiration_seconds=120,
             logger=logger,