make accession non-required, fixes #87

bagdiscovery/migrations/0003_auto_20200127_1819.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.8 on 2020-01-27 18:19
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+ dependencies = [
+ ('bagdiscovery', '0002_auto_20181119_1527'),
+ ]
+
+ operations = [
+ migrations.AlterField(
+ model_name='bag',
+ name='accession',
+ field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='bagdiscovery.Accession'),
+ ),
+ ]

bagdiscovery/models.py

@@ -11,7 +11,7 @@ class Accession(models.Model):
 class Bag(models.Model):
  bag_identifier = models.CharField(max_length=255, unique=True)
  bag_path = models.CharField(max_length=255, null=True, blank=True)
- accession = models.ForeignKey(Accession, on_delete=models.CASCADE)
+ accession = models.ForeignKey(Accession, on_delete=models.CASCADE, null=True, blank=True)
  data = JSONField(null=True, blank=True)
  created = models.DateTimeField(auto_now=True)
  last_modified = models.DateTimeField(auto_now_add=True)