Allow blank order donated field on lnpayment admin edits

api/admin.py

@@ -318,6 +318,7 @@ class LNPaymentAdmin(AdminChangeLinksMixin, admin.ModelAdmin):
     raw_id_fields = (
         "receiver",
         "sender",
+        "order_donated",
     )
     list_filter = ("type", "concept", "status")
     ordering = ("-expires_at",)

api/migrations/0038_alter_lnpayment_order_donated.py

@@ -0,0 +1,25 @@
+# Generated by Django 4.2.1 on 2023-05-18 14:25
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("api", "0037_lnpayment_order_donated_alter_lnpayment_concept_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="lnpayment",
+            name="order_donated",
+            field=models.ForeignKey(
+                blank=True,
+                default=None,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="order_donated",
+                to="api.order",
+            ),
+        ),
+    ]

api/models/ln_payment.py

@@ -124,6 +124,7 @@ class LNPayment(models.Model):
         null=True,
         on_delete=models.SET_NULL,
         default=None,
+        blank=True,
     )
 
     def __str__(self):