fix: Allow upload group to be empty for remote uploads

api/funkwhale_api/music/migrations/0062_alter_upload_upload_group.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.2.23 on 2024-01-22 13:10
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("music", "0061_alter_upload_upload_group"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="upload",
+            name="upload_group",
+            field=models.ForeignKey(
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="uploads",
+                to="music.uploadgroup",
+            ),
+        ),
+    ]

api/funkwhale_api/music/models.py

@@ -739,7 +739,7 @@ class Upload(models.Model):
         on_delete=models.CASCADE,
     )
     upload_group = models.ForeignKey(
-        "UploadGroup", related_name="uploads", on_delete=models.CASCADE
+        "UploadGroup", related_name="uploads", on_delete=models.CASCADE, null=True
     )
 
     # metadata from federation