add common model so we can inherit timestamped model wherever we want…

…, DRY

my_awesome_project/common.py

@@ -0,0 +1,9 @@
+from django.db import models
+
+
+class TimeStampedModel(models.Model):
+    created_at = models.DateTimeField(auto_now_add=True)
+    modified_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        abstract = True

my_awesome_project/fileapp/models.py

@@ -1,6 +1,4 @@
-from django.conf import settings
 from django.contrib.auth import get_user_model
-from django.db import models
 from django.db.models import (
     CASCADE,
     CharField,
@@ -11,6 +9,8 @@
     Model,
 )
 
+from my_awesome_project.common import TimeStampedModel
+
 User = get_user_model()
 # User = settings.AUTH_USER_MODEL
 
@@ -24,7 +24,7 @@ def last_messages(self):
         return self.all().order_by("-id")[:10]
 
 
-class FileModel(Model):
+class FileModel(TimeStampedModel):
     name = CharField(max_length=20)
     description = CharField(
         max_length=1000, default="default file description"

my_awesome_project/fileapp/tasks.py

@@ -0,0 +1,13 @@
+from django.contrib.auth import get_user_model
+
+from config import celery_app
+
+from .models import FileModel
+
+User = get_user_model()
+
+
+@celery_app.task()
+def get_users_count():
+    """A pointless Celery task to demonstrate usage."""
+    return User.objects.count()