Don't use auto_now_add; you can't override that

ingest/migrations/0002_alter_decompressedevent_timestamp.py

@@ -0,0 +1,17 @@
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ingest', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='decompressedevent',
+            name='timestamp',
+            field=models.DateTimeField(default=django.utils.timezone.now, help_text='Server-side timestamp'),
+        ),
+    ]

ingest/models.py

@@ -1,6 +1,7 @@
 import uuid
 
 from django.db import models
+from django.utils import timezone
 
 from projects.models import Project
 
@@ -10,4 +11,4 @@ class DecompressedEvent(models.Model):   # or... DecompressedRawEvent
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
     project = models.ForeignKey(Project, blank=False, null=True, on_delete=models.SET_NULL)  # SET_NULL: cleanup 'later'
     data = models.TextField(blank=False, null=False)
-    timestamp = models.DateTimeField(null=False, auto_now_add=True, help_text="Server-side timestamp")
+    timestamp = models.DateTimeField(null=False, default=timezone.now, help_text="Server-side timestamp")

ingest/views.py

@@ -67,7 +67,7 @@ class BaseIngestAPIView(APIView):
         DecompressedEvent.objects.create(
             project=project,
             data=json.dumps(event_data),  # TODO don't parse-then-print for BaseIngestion
-            timestamp=now,  # TODO this doesn't work because of auto_add_now
+            timestamp=now,
         )
 
         debug_info = request.META.get("HTTP_X_BUGSINK_DEBUGINFO", "")