Django Slack OAuth

A lightweight module for integrating your Django application with Slack.

Requirements

• Django >= 1.8

To use Slack OAuth in your Django app, you'll need your SLACK_CLIENT_ID and SLACK_CLIENT_SECRET which can be found when you Create a New Slack Application.

Instructions

1. Install using pip:

   $ pip install django-slack-oauth
   

2. Add django_slack_oauth to INSTALLED_APPS in settings.py:

   INSTALLED_APPS = (
       ...
       'django_slack_oauth',
   )

3. Run initial migrations:

   $ python manage.py migrate
   

4. Add Slack OAuth base url to your project's urls.py:

   urlpatterns = [
       ...
       url(r'^slack/', include('django_slack_oauth.urls')),
       ...
   ]

5. Specify your Slack credentials, OAuth scope and Successful Redirect URL in settings.py:

   SLACK_CLIENT_ID = os.environ.get('SLACK_CLIENT_ID')
   SLACK_CLIENT_SECRET = os.environ.get('SLACK_CLIENT_SECRET')
   SLACK_SCOPE = 'admin,bot'

   If you aren't sure what your scope should be, read more about Slack OAuth Scopes.

Example

Add a link to Slack OAuth in one of your templates:

<a href='{% url 'slack_auth' %}'>Get slacked</a>

After clicking it, you will be redirected to Slack for the OAuth process. If successful, you will be redirected to a view showing a success message. You can change this view by setting SLACK_SUCCESS_REDIRECT_URL in settings.py.

You can then view the successful request and API data in the Admin under Slack OAuth Requests.

## Advanced Usage

Pipelines

Pipelines allow you to create actions after a successful OAuth authentication. Some use cases may be:

• Register an account for the user
• Capture returned API data from Slack after authentication (Default Behaviour)
• Send Slack messages to the user's Slack team after authentication

They are simply a list of functions, which get called in order. They must accept and return two parameters: request and api_data, containing the initial request and returned API data respectively.

Pipelines are defined as a list of callables in settings.py:

SLACK_PIPELINES = [
    'path.to.function1',
    'path.to.function2',
    ...
]

• Example 1: Show returned data from the OAuth request

  settings.py

  ...
  SLACK_PIPELINES = [
      'my_app.pipelines.debug_oauth_request',
  ]

  my_app/pipelines.py

  def debug_oauth_request(request, api_data):
      print(api_data)
      return request, api_data

• Example 2: Register User and send an email

  settings.py

  ...
  SLACK_PIPELINES = [
      'my_app.pipelines.register_user',
      'my_app.pipelines.send_email',
  ]

  my_app/pipelines.py

  from django.contrib.auth.models import User
  
  from django_slack_oauth.models import SlackUser
  
  
  def register_user(request, api_data):
      user = User.objects.create_user(
          username=api_data['user_id']
      )
  
      slacker, _ = SlackUser.objects.get_or_create(slacker=user)
      slacker.access_token = api_data.pop('access_token')
      slacker.extras = api_data
      slacker.save()
  
      request.created_user = user
  
      return request, api_data
  
  
  def notify(request, api_data):
      notify_admins("New user with id {} has been created.".format(request.created_user))
      notify_user(request.created_user)
  
      return request, api_data

Slack Endpoints

The following parameters may be overriden, in the (rare) case that Slack changes their endpoints:

SLACK_AUTHORIZATION_URL = 'https://slack.com/oauth/authorize'
SLACK_OAUTH_ACCESS_URL = 'https://slack.com/api/oauth.access'

Forgery Attacks

To avoid forgery attacks we pass the state parameter in the initial authorization request. This state is stored in cache. For production environments, it's highly recommended to avoid using LocMemCache, and set up your cache backend using redis or MemcachedCache. For example:

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': '127.0.0.1:11211',
    }
}