Use django-celery-beat for scheduled tasks (#2084)

Use django-celery-beat for scheduled tasks

CONTRIBUTORS.rst

@@ -191,6 +191,7 @@ Listed in alphabetical order.
   Will Farley              `@goldhand`_                 @g01dhand
   William Archinal         `@archinal`_
   Yaroslav Halchenko
+  Keyvan Mosharraf         `@keyvanm`_
 ========================== ============================ ==============
 
 .. _@a7p: https://github.com/a7p
@@ -325,6 +326,7 @@ Listed in alphabetical order.
 .. _@vladdoster: https://github.com/vladdoster
 .. _@cmargieson: https://github.com/cmargieson
 .. _@tanoabeleyra: https://github.com/tanoabeleyra
+.. _@keyvanm: https://github.com/keyvanm
 
 Special Thanks
 ~~~~~~~~~~~~~~

{{cookiecutter.project_slug}}/config/settings/base.py

@@ -75,7 +75,11 @@ THIRD_PARTY_APPS = [
     "allauth.account",
     "allauth.socialaccount",
     "rest_framework",
+{%- if cookiecutter.use_celery == 'y' %}
+    "django_celery_beat",
+{%- endif %}
 ]
+
 LOCAL_APPS = [
     "{{ cookiecutter.project_slug }}.users.apps.UsersConfig",
     # Your stuff: custom apps go here
@@ -270,6 +274,8 @@ CELERY_TASK_TIME_LIMIT = 5 * 60
 # http://docs.celeryproject.org/en/latest/userguide/configuration.html#task-soft-time-limit
 # TODO: set to whatever value is adequate in your circumstances
 CELERY_TASK_SOFT_TIME_LIMIT = 60
+# http://docs.celeryproject.org/en/latest/userguide/configuration.html#beat-scheduler
+CELERY_BEAT_SCHEDULER = "django_celery_beat.schedulers:DatabaseScheduler"
 
 {%- endif %}
 # django-allauth

{{cookiecutter.project_slug}}/requirements/base.txt

@@ -11,6 +11,7 @@ whitenoise==4.1.2  # https://github.com/evansd/whitenoise
 redis==3.2.1  # https://github.com/antirez/redis
 {%- if cookiecutter.use_celery == "y" %}
 celery==4.3.0  # pyup: < 5.0  # https://github.com/celery/celery
+django-celery-beat==1.5.0  # https://github.com/celery/django-celery-beat
 {%- if cookiecutter.use_docker == 'y' %}
 flower==0.9.3  # https://github.com/mher/flower
 {%- endif %}