README.md

Advanced Django Tutorial

• T-01 : project init
• T-02 : custom management command to create_data
• T-03 : api views, pagination, queryset optimization
• T-04 : unit tests
• T-05 : elastic search implementation

Initial Commands

python manage.py makemigrations
python manage.py migrate
python manage.py create_data

Elastic Search Command

python manage.py search_index --rebuild

Celery Commands

# start the worker
celery -A src worker -l INFO
# start django celery beat
celery -A src beat -l INFO --scheduler django_celery_beat.schedulers:DatabaseScheduler
# run celery flower
 celery -A src flower --port=5556

Creating a periodic task

In [1]: from django_celery_beat.models import PeriodicTask, IntervalSchedule
In [2]: schedule, created = IntervalSchedule.objects.get_or_create(
   ...: every=10,
   ...: period=IntervalSchedule.SECONDS
   ...: )

In [3]: created
Out[3]: True

In [4]: PeriodicTask.objects.create(
   ...: interval=schedule,
   ...: name="my counting author task :D",
   ...: task="app.tasks.count_authors",
   ...: )
Out[4]: <PeriodicTask: my counting author task :D: every 10 seconds>

In [5]: sc2, created2 = IntervalSchedule.objects.get_or_create(
   ...: every=5,
   ...: period=IntervalSchedule.SECONDS
   ...: )

In [6]: created2
Out[6]: True

In [7]: PeriodicTask.objects.create(
   ...: interval=sc2,
   ...: name="Book ratings getter task",
   ...: task="app.tasks.get_book_ratings",
   ...: )
Out[7]: <PeriodicTask: Book ratings getter task: every 5 seconds>