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Django Slack Logger
import requests
import json
import time
import math
from copy import copy
from django.conf import settings
from django.utils.log import AdminEmailHandler
from django.views.debug import ExceptionReporter
class SlackExceptionHandler(AdminEmailHandler):
# replacing default django emit (
def emit(self, record, *args, **kwargs):
# original AdminEmailHandler "emit" method code (but without actually sending email)
request = record.request
subject = '%s (%s IP): %s' % (
('internal' if request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS
else 'EXTERNAL'),
except Exception:
subject = '%s: %s' % (
request = None
subject = self.format_subject(subject)
# Since we add a nicely formatted traceback on our own, create a copy
# of the log record without the exception data.
no_exc_record = copy(record)
no_exc_record.exc_info = None
no_exc_record.exc_text = None
if record.exc_info:
exc_info = record.exc_info
exc_info = (None, record.getMessage(), None)
reporter = ExceptionReporter(request, is_email=True, *exc_info)
message = "%s\n\n%s" % (self.format(no_exc_record), reporter.get_traceback_text())
html_message = reporter.get_traceback_html() if self.include_html else None
#self.send_mail(subject, message, fail_silently=True, html_message=html_message)
# this is where original "emit" method code ends
# construct slack attachment detail fields
attachments = [
'title': subject,
'color': 'danger',
'fields': [
"title": "Level",
"value": record.levelname,
"short": True,
"title": "Method",
"value": request.method if request else 'No Request',
"short": True,
"title": "Path",
"value": request.path if request else 'No Request',
"short": True,
"title": "User",
"value": ( (request.user.username + ' (' + str( + ')'
if request.user.is_authenticated else 'Anonymous' )
if request else 'No Request' ),
"short": True,
"title": "Status Code",
"value": record.status_code,
"short": True,
"title": "UA",
"value": ( request.META['HTTP_USER_AGENT']
if request and request.META else 'No Request' ),
"short": False,
"title": 'GET Params',
"value": json.dumps(request.GET) if request else 'No Request',
"short": False,
"title": "POST Data",
"value": json.dumps(request.POST) if request else 'No Request',
"short": False,
# add main error message body
# slack message attachment text has max of 8000 bytes
# lets split it up into 7900 bytes long chunks to be on the safe side
split = 7900
parts = range( math.ceil( len( message.encode('utf8') ) / split ) )
for part in parts:
start = 0 if part == 0 else split * part
end = split if part == 0 else split * part + split
# combine final text and prepend it with line breaks
# so the details in slack message will fully collapse
detail_text = '\r\n\r\n\r\n\r\n\r\n\r\n\r\n' + message[start:end]
'color': 'danger',
'title': 'Details (Part {})'.format(part + 1),
'text': detail_text,
'ts': time.time(),
# construct main text
main_text = 'Error at ' + time.strftime("%A, %d %b %Y %H:%M:%S +0000", time.gmtime())
# construct data
data = {
'payload': json.dumps({'main_text': main_text,'attachments': attachments}),
# setup channel webhook
webhook_url = ''
# send it
r =, data=data)
from django.utils.log import DEFAULT_LOGGING
LOGGING['handlers']['slack_admins'] = {
'level': 'ERROR',
'filters': ['require_debug_false'],
'class': 'config.helpers.slack_logger.SlackExceptionHandler',
LOGGING['loggers']['django'] = {
'handlers': ['console', 'slack_admins'],
'level': 'INFO',

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commented Jun 7, 2018

This line
"value": json.dumps(request.POST) if request else 'No Request',
is realy dangerous. E.g. password filled forms will be exposed to Slack in cleartext


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Owner Author

commented Jul 24, 2018

Hey, @Speedy1991 I'm not 100% sure it will work (since it was long time ago when I wrote this), but I subclassed AdminEmailHandler and used its emit method from Django standard email reporting and Django sensitive information filtering should work in this logger just as in email reporting -


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commented Nov 9, 2018

Do you find that this is still working with Django 2.1? I was running a modified version of this successfully until upgrading to 2.1.

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