fix: correct effective date of transfer 2095

backend/api/migrations/0020_correct_effective_date_of_transfer_2095.py

@@ -0,0 +1,39 @@
+import logging
+from django.db import migrations, transaction
+from django.utils import timezone
+
+def update_transfer_effective_date(apps, schema_editor):
+    """
+    Update transfer ID #2095 to correct effective date from March 30, 2022 to March 30, 2023.
+    If any record is not updated, all changes are reverted.
+    """
+    credit_trade_history = apps.get_model('api', 'CreditTradeHistory')
+    new_trade_effective_date = timezone.datetime.strptime('2023-03-30', "%Y-%m-%d").date()
+
+    # IDs of the CreditTradeHistory records to update
+    history_ids = [4666, 4709]
+
+    with transaction.atomic():
+        for history_id in history_ids:
+            try:
+                history = credit_trade_history.objects.get(id=history_id)
+                history.trade_effective_date = new_trade_effective_date
+                history.save()
+            except credit_trade_history.DoesNotExist:
+                logging.warning(
+                    'Failed to update CreditTradeHistory: No entry found with id "%s"; '
+                    'all changes within this transaction will be reverted.',
+                    history_id
+                )
+
+class Migration(migrations.Migration):
+    """
+    Attaches the update function to the migration operations
+    """
+    dependencies = [
+        ('api', '0019_update_signing_authority_declaration_statement'),
+    ]
+
+    operations = [
+        migrations.RunPython(update_transfer_effective_date),
+    ]