Add mib_reference field to Payment model and set default ordering by created_at

billing/admin.py

@@ -5,7 +5,16 @@ from .models import Payment, BillFormula, Topup
 
 
 class PaymentAdmin(admin.ModelAdmin):
-    list_display = ("id", "user", "amount", "paid", "paid_at", "method")
+    list_display = (
+        "id",
+        "user",
+        "amount",
+        "paid",
+        "paid_at",
+        "method",
+        "created_at",
+        "updated_at",
+    )
 
 
 admin.site.register(Payment, PaymentAdmin)

billing/migrations/0005_alter_payment_options_payment_mib_reference.py

@@ -0,0 +1,21 @@
+# Generated by Django 5.2 on 2025-05-31 07:01
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("billing", "0004_alter_topup_id"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="payment",
+            options={"ordering": ["-created_at"]},
+        ),
+        migrations.AddField(
+            model_name="payment",
+            name="mib_reference",
+            field=models.CharField(blank=True, default="", null=True),
+        ),
+    ]

billing/models.py

@@ -16,6 +16,7 @@ class Payment(models.Model):
         ("TRANSFER", "Transfer"),
     ]
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    mib_reference = models.CharField(default="", null=True, blank=True)
     number_of_months = models.IntegerField()
     amount = models.FloatField()
     paid = models.BooleanField(default=False)
@@ -30,6 +31,9 @@ class Payment(models.Model):
     def __str__(self):
         return f"Payment by {self.user}"
 
+    class Meta:
+        ordering = ["-created_at"]
+
 
 class BillFormula(models.Model):
     formula = models.CharField(max_length=255)