Backdate last_applied dates to use value of inserted_at

Author: ChrisLovering

pydis_site/apps/api/migrations/0084_infraction_last_applied.py

@@ -1,7 +1,13 @@
 # Generated by Django 4.0.6 on 2022-07-27 20:32
 
-from django.db import migrations, models
 import django.utils.timezone
+from django.db import migrations, models
+from django.apps.registry import Apps
+
+
+def set_last_applied_to_inserted_at(apps: Apps, schema_editor):
+    Infractions = apps.get_model("api", "infraction")
+    Infractions.objects.all().update(last_applied=models.F("inserted_at"))
 
 
 class Migration(migrations.Migration):
@@ -16,4 +22,5 @@ class Migration(migrations.Migration):
             name='last_applied',
             field=models.DateTimeField(default=django.utils.timezone.now, help_text='The date and time of when this infraction was last applied.'),
         ),
+        migrations.RunPython(set_last_applied_to_inserted_at)
     ]