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Project description

DJ Actions

PyPI version

A pattern + tooling to enable a standardized way to interact with and mutate data on a Django model

Getting started

Installation

pip install dj-actions

Add to INSTALLED_APPS

Prepare your app for action!

python manage.py start_actions

Add your first action

python manage.py create_action

Add actions to your Django app

1. Create an actions module in your app:

DJActions convention is to isolate each action into it's own module. A typical file layout might look something like this:

[app]
  |_ [actions]
        |_ action_registry.py
        |_ [some_action]
        |_ [some_other_action]

2. Create your action registry

The action registry is how we tell DJActions how to route to our actions. The action registry will also be responsible for generating your documentation endpoints

Here is an example registry:

from actions.util import (
    STATUS,
    ACTION_TYPE,
    # get_action_docs,
    enrich_actions
)

action_list = []
## -- START ACTION REGISTRY -- ##
action_list.append(('mark_done', ACTION_TYPE.INSTANCE.value, STATUS.ALPHA.value))
## -- END ACTION REGISTRY -- ##

# this is the abolsute path to the base of your app:
# dj-actions uses this to locate your action directory
base = '/code/example_app/'

# convention over configuration
# this will load your actions configurations from
initial_registry = { "resource": "todo", "basepath": "/todos/", "actions": {} }
ACTIONS = enrich_actions(
    base,
    initial_registry,
    action_list
)

Now you need to mixin actions.ActionViews into your ViewSet:

from rest_framework import routers, serializers, viewsets

from actions.mixins import ActionMixin
from actions.actions.action_registry import ACTIONS
from actions.models import EventAction


class EventActionViewSet(ActionMixin, viewsets.ModelViewSet):
    queryset = EventAction.objects.all()
    serializer_class = TodoSerializer
    action_registry = ACTIONS


router = routers.DefaultRouter()
router.register(r'todos', TodoViewSet)

Configuration

  • DJACTION_TRACK_ACTIONS if True will store action info in the db (default: True)
  • DJACTION_TTL_MINUTES actions older than this will be archived (default 1 day (60*24))

Features

  • Reliable, simple pattern to execute complex logic
  • Self documenting

Tooling

This library provides you with some tools and tasks which might be useful:

Stream,io (WIP)

Push action information into stream.io

Airflow (WIP)

Push downstream work to an airflow task

Concepts

Task Registry

The Task Registry provides a means of defining tasks in a self documenting way. Based on the meta-data provided in the task registry, tasks will be exposed in various different ways

Project details


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