📖 Full documentation: https://barttc.github.io/django-eventlog/

Compatibility Matrix:

django-eventlog

django-eventlog is a very simple event logger you can use to track certain actions in your code. Events are stored in a Django model and can be viewed in the Django Admin.

Usage Example:

from eventlog import EventGroup

e = EventGroup()                       # Start a new Event Group
e.info('About to send 1000 mails.',    # Trigger an Event
       initiator='Mailer Daemon')
try:
    # ... sending 1000 mails
    e.info('All emails sent!',         # Trigger an Event in the same group,
           initiator='Mailer Daemon')  # so they are combined in the admin.
except Exception:
    e.error('There was an error sending the emails.',
            initiator='Mailer Daemon')

You can reuse an event group by specifying a group name and attach optional data. Data must be JSON serializable.

from eventlog import EventGroup

def purchase():
    e = EventGroup(group_id=f"Order {self.order.pk}")
    e.info("Sent order to Shopify", data={"items": [1, 2, 3]})

def subscribe_newsletter():
    e = EventGroup(group_id=f"Order {self.order.pk}")
    e.info("User subscribed to newsletter on checkout", data={"email": "user@example.com"})

Events can be grouped in a "Event Group" and when hovering over one item in the admin, all events of the same group are highlighted:

The details view of an event will list all other events of this group so you can track the progress:

While looking similar, it's not intended to be a replacement for your regular Python logging facility, rather an addition to it.

django-eventlog stores it's data in a regular database model, so each log entry will trigger a SQL Insert. Therefore you should be careful using it in high performance and/or high volume environments.

Changelog

2.1 (WIP)

• The format and value of the random group id can now be specified using the AppConfig.
• Various improvements to make the Event model swappable via the AppConfig.
• Switch development tooling from Pipenv to Poetry

2.0 (2024-03-10)

• Overall test and code refactor.

• Documentation now done with MKDocs.

• Timeline in Admin change form now supports delays of days and hours, instead of just minutes.

• Backwards incompatible: Removed undocumented Event.objects.purge() queryset method.

• Backwards incompatible: The list of event types defined in the app config is now set via Python dataclasses rather than a dictionary. The migration is straightforward.

  event_types = {
      "info": {
          "label": _("Info"),
          "color": None,
          "bgcolor": None,
      },
      "warning": {
          "label": _("Warning"),
          "color": None,
          "bgcolor": None,
      },
      # ...
  }
  

  The dictionary is now a EventTypeList of EventType dataclasses:

  from django.utils.translation import gettext_lazy as _
  from eventlog.datastructures import EventType, EventTypeList
  
  # List of event types to be used in events. A list of `EventType` classes
  event_types = EventTypeList(
      EventType(name="info", label=_("Info")),
      EventType(name="warning", label=_("Warning")),
      EventType(name="error", label=_("Error"), color="red"),
      EventType(name="critical", label=_("Critical"), color="white", bgcolor="red"),
  )
  

  You will only need to do this change if you've earlier overridden the event_type property.

1.5 (2024-03-08)

• Event can have optional, JSON serializable data attached.
• Fixed dark mode colors.
• Various Admin UI improvements.

1.4 (2024-03-05)

• Event groups can now have arbitrary names instead of UUIDs.
• Event comments is a textfield.
• Fixed potential migration warnings around AutoFields.

1.3 (2023-10-04)

• Python 3.12 compatibility
• Django 5.0 support
• Type Annotations

1.2 (2023-04-28)

• Python 3.7 to 3.11 compatibility
• Django 3.2 to 4.2 support

1.1 (2018-05-11)

• Added ability to manually set a group id to make an EventGroup object reusable through threads.

1.0 (2018-02-13)

• Production ready 1.0 release.
• The details Admin view now displays all events of the group with an annotated delay, so you can see the progress of the group.

0.9 (2018-02-13)

• Initial release.
• Django 1.8 to 2.0 compatibility.
• Python 2.7 to 3.6 compatibility.