Store event user actions to gain insights form it in the future (#3136)

apps/events/migrations/0003_eventuseraction.py

@@ -0,0 +1,53 @@
+# Generated by Django 3.2.23 on 2024-02-21 11:24
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ("events", "0002_auto_20230215_2107"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="EventUserAction",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("timestamp", models.DateTimeField(auto_now_add=True)),
+                (
+                    "type",
+                    models.CharField(
+                        choices=[
+                            ("register", "register"),
+                            ("unregister", "unregister"),
+                        ],
+                        max_length=15,
+                    ),
+                ),
+                (
+                    "event",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="events.event"
+                    ),
+                ),
+                (
+                    "user",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+        ),
+    ]

apps/events/models/Event.py

@@ -157,6 +157,22 @@ def get_queryset_for_user(self, user: User):
         )
 
 
+# Store all actions users take in regards to events.
+class EventUserAction(models.Model):
+    event = models.ForeignKey("Event", on_delete=models.CASCADE)
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    timestamp = models.DateTimeField(auto_now_add=True)
+
+    type = models.CharField(
+        max_length=15,
+        choices=[
+            ("register", "register"),
+            ("unregister", "unregister")
+            #  , ("pay", "pay"), ("chose_extra", "chose_extra"), ("sent_feedback", "sent_feedback") TODO: these should be added, but we start with register/unregister for now.
+        ],
+    )
+
+
 class Event(models.Model):
     """
     Base class for Event-objects.

apps/events/models/__init__.py

@@ -14,7 +14,7 @@
     Reservee,
     StatusCode,
 )
-from .Event import Event, EventOrderedByRegistration
+from .Event import Event, EventOrderedByRegistration, EventUserAction
 from .Extras import Extras
 
 __all__ = [
@@ -31,6 +31,7 @@
     Reservee,
     StatusCode,
     Event,
+    EventUserAction,
     EventOrderedByRegistration,
     Extras,
 ]

apps/events/signals.py

@@ -0,0 +1,18 @@
+from django.db.models.signals import pre_delete, pre_save
+from django.dispatch import receiver
+
+from .models import Attendee, EventUserAction
+
+
+@receiver(signal=pre_save, sender=Attendee)
+def handle_payment_relation_status_change(sender, instance: Attendee, **kwargs):
+    EventUserAction.objects.create(
+        user=instance.user, event=instance.event.event, type="register"
+    )
+
+
+@receiver(signal=pre_delete, sender=Attendee)
+def handle_payment_transaction_status_change(sender, instance: Attendee, **kwargs):
+    EventUserAction.objects.create(
+        user=instance.user, event=instance.event.event, type="unregister"
+    )