Add typeof=object constraint

arkindex/dataimport/migrations/0039_worker_configuration.py

-# Generated by Django 3.2.5 on 2021-11-02 11:16
+# Generated by Django 3.2.5 on 2021-11-04 09:42
 
 import uuid
 
@@ -54,6 +54,10 @@ class Migration(migrations.Migration):
             name='configuration',
             field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='worker_runs', to='dataimport.workerconfiguration'),
         ),
+        migrations.AddConstraint(
+            model_name='workerconfiguration',
+            constraint=models.CheckConstraint(check=models.Q(('configuration__typeof', 'object')), name='worker_configuration_configuration_objects'),
+        ),
         migrations.AlterUniqueTogether(
             name='workerconfiguration',
             unique_together={('worker', 'name'), ('worker', 'configuration_hash')},

arkindex/dataimport/models.py

@@ -616,6 +616,12 @@ class WorkerConfiguration(IndexableModel):
             ('worker', 'configuration_hash'),
             ('worker', 'name')
         )
+        constraints = [
+            models.CheckConstraint(
+                check=models.Q(configuration__typeof='object'),
+                name='worker_configuration_configuration_objects',
+            )
+        ]
 
 
 class WorkerRun(models.Model):