make benchmark field optional for report

server/report/migrations/0002_alter_report_benchmark.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.2.20 on 2023-09-22 14:19
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('benchmark', '0001_initial'),
+        ('report', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='report',
+            name='benchmark',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='benchmark.benchmark'),
+        ),
+    ]

server/report/models.py

@@ -13,7 +13,9 @@ class Report(models.Model):
     data_preparation_mlcube = models.ForeignKey(
         "mlcube.MlCube", on_delete=models.PROTECT
     )
-    benchmark = models.ForeignKey("benchmark.Benchmark", on_delete=models.CASCADE)
+    benchmark = models.ForeignKey(
+        "benchmark.Benchmark", on_delete=models.CASCADE, blank=True, null=True
+    )
     is_valid = models.BooleanField(default=True)
 
     contents = models.JSONField(default=dict, blank=True, null=True)