invoicing: credit cancellation fields (#89810)

lingo/invoicing/migrations/0089_credit_cancellation.py

@@ -0,0 +1,40 @@
+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),
+        ('invoicing', '0088_credit_from_pool'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='credit',
+            name='cancellation_description',
+            field=models.TextField(blank=True, verbose_name='Description'),
+        ),
+        migrations.AddField(
+            model_name='credit',
+            name='cancellation_reason',
+            field=models.ForeignKey(
+                null=True,
+                on_delete=django.db.models.deletion.PROTECT,
+                to='invoicing.invoicecancellationreason',
+                verbose_name='Cancellation reason',
+            ),
+        ),
+        migrations.AddField(
+            model_name='credit',
+            name='cancelled_at',
+            field=models.DateTimeField(null=True),
+        ),
+        migrations.AddField(
+            model_name='credit',
+            name='cancelled_by',
+            field=models.ForeignKey(
+                null=True, on_delete=django.db.models.deletion.SET_NULL, to=settings.AUTH_USER_MODEL
+            ),
+        ),
+    ]

lingo/invoicing/models.py

@@ -1034,6 +1034,10 @@ class DraftInvoice(AbstractInvoice):
         credit.assigned_amount = 0
         credit.remaining_amount = 0
         credit.label = _('Credit from %s') % datetime.date.today().strftime('%d/%m/%Y')
+        credit.cancelled_at = None
+        credit.cancelled_by = None
+        credit.cancellation_reason = None
+        credit.cancellation_description = ''
         credit.save()
 
         for line in self.lines.all().order_by('pk'):
@@ -1148,6 +1152,12 @@ class Credit(AbstractInvoiceObject):
     formatted_number = models.CharField(max_length=200)
     assigned_amount = models.DecimalField(max_digits=9, decimal_places=2, default=0)
     remaining_amount = models.DecimalField(max_digits=9, decimal_places=2, default=0)
+    cancelled_at = models.DateTimeField(null=True)
+    cancelled_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.SET_NULL, null=True)
+    cancellation_reason = models.ForeignKey(
+        InvoiceCancellationReason, verbose_name=_('Cancellation reason'), on_delete=models.PROTECT, null=True
+    )
+    cancellation_description = models.TextField(_('Description'), blank=True)
 
     class Meta:
         constraints = [