posts message to Slack every 50 new users when API key is provided

roomlist/accounts/cas_callbacks.py

@@ -9,6 +9,7 @@ from django.contrib import messages
 import requests
 # imports from your apps
 from .models import Student, Major
+from settings.slack import slack_post
 
 
 def pfparse(pf_name_result):
@@ -89,6 +90,15 @@ def create_user(tree):
         if user_created:
             print("Created user object %s." % username)
 
+            # notify developers of user signup milestones
+            num_users = User.objects.all().count()
+            if num_users % 50:
+                message = "Congratulations! We've passed %d user registrations!" % num_users
+                slack_post(text=message,
+                           channel='#roomlist',
+                           username='Roomlist User Milestones',
+                           icon_emoji=':tada:')
+
             # set and save the user's email
             email_str = "%s@%s" % (username, settings.ORGANIZATION_EMAIL_DOMAIN)
             user.email = email_str

roomlist/settings/slack.py

+# standard library imports
+from __future__ import absolute_import, print_function
+# standard library imports
+import json
+# third party imports
+import requests
+
+
+webhook_url = 'https://hooks.slack.com/services/xxxxxxxxx/xxxxxxxxx/xxxxxxxxxxxxxxxxxxxxxxxx'
+
+def slack_post(text, channel, username, icon_emoji):
+    try:
+        payload = {'text': text, 'channel': channel,
+                   'username': username, 'icon_emoji': icon_emoji, }
+        r = requests.post(webhook_url, data=json.dumps(payload))
+        r.raise_for_status()
+        print(r.status_code)
+    except request.exceptions.RequestException as e:
+        print("Error posting to Slack:", e)
+
+# Examples
+
+# slack_post(text="A terrible, awful thing happened on the server!",
+#            channel='#bot-test',
+#            username='Roomlist Server Errors',
+#            icon_emoji=':fire:')
+
+# slack_post(text="Congratulations! You've passed 150 users registrations!",
+#            channel='#bot-test',
+#            username='Roomlist User Milestones',
+#            icon_emoji=':tada:')