Keep future generic generic FK fields nullable...

for now, to make it possible to create relations

apis_core/relations/migrations/0003_alter_relation_obj_content_type_and_more.py

@@ -0,0 +1,47 @@
+# Generated by Django 5.1.1 on 2024-10-15 06:10
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+ dependencies = [
+ ("contenttypes", "0002_remove_content_type_name"),
+ ("relations", "0002_relation_obj_content_type_relation_obj_object_id_and_more"),
+ ]
+
+ operations = [
+ migrations.AlterField(
+ model_name="relation",
+ name="obj_content_type",
+ field=models.ForeignKey(
+ editable=False,
+ null=True,
+ on_delete=django.db.models.deletion.CASCADE,
+ related_name="relation_obj_set",
+ to="contenttypes.contenttype",
+ ),
+ ),
+ migrations.AlterField(
+ model_name="relation",
+ name="obj_object_id",
+ field=models.PositiveIntegerField(editable=False, null=True),
+ ),
+ migrations.AlterField(
+ model_name="relation",
+ name="subj_content_type",
+ field=models.ForeignKey(
+ editable=False,
+ null=True,
+ on_delete=django.db.models.deletion.CASCADE,
+ related_name="relation_subj_set",
+ to="contenttypes.contenttype",
+ ),
+ ),
+ migrations.AlterField(
+ model_name="relation",
+ name="subj_object_id",
+ field=models.PositiveIntegerField(editable=False, null=True),
+ ),
+ ]

apis_core/relations/models.py

@@ -34,8 +34,9 @@ class Relation(models.Model, metaclass=RelationModelBase):
  on_delete=models.CASCADE,
  related_name="relation_subj_set",
  editable=False,
+ null=True,
  )
- subj_object_id = models.PositiveIntegerField(editable=False)
+ subj_object_id = models.PositiveIntegerField(editable=False, null=True)
  subj = models.ForeignKey(
  RootObject,
  on_delete=models.SET_NULL,
@@ -47,8 +48,9 @@ class Relation(models.Model, metaclass=RelationModelBase):
  on_delete=models.CASCADE,
  related_name="relation_obj_set",
  editable=False,
+ null=True,
  )
- obj_object_id = models.PositiveIntegerField(editable=False)
+ obj_object_id = models.PositiveIntegerField(editable=False, null=True)
  obj = models.ForeignKey(
  RootObject,
  on_delete=models.SET_NULL,