From 18b3f45b79c01915310b619038afdf09721669ea Mon Sep 17 00:00:00 2001
From: Tom Hacohen <tom@stosb.com>
Date: Tue, 22 Sep 2020 11:33:17 +0300
Subject: [PATCH] Collection main_item: make a OneToOneField intsead of just a
 foreign key.

---
 .../migrations/0030_auto_20200922_0832.py     | 19 +++++++++++++++++++
 django_etebase/models.py                      |  2 +-
 2 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 django_etebase/migrations/0030_auto_20200922_0832.py

diff --git a/django_etebase/migrations/0030_auto_20200922_0832.py b/django_etebase/migrations/0030_auto_20200922_0832.py
new file mode 100644
index 0000000..d5fa95d
--- /dev/null
+++ b/django_etebase/migrations/0030_auto_20200922_0832.py
@@ -0,0 +1,19 @@
+# Generated by Django 3.1.1 on 2020-09-22 08:32
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_etebase', '0029_auto_20200907_0801'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='collection',
+            name='main_item',
+            field=models.OneToOneField(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='parent', to='django_etebase.collectionitem'),
+        ),
+    ]
diff --git a/django_etebase/models.py b/django_etebase/models.py
index 797aa0f..d3405f1 100644
--- a/django_etebase/models.py
+++ b/django_etebase/models.py
@@ -28,7 +28,7 @@ UidValidator = RegexValidator(regex=r'^[a-zA-Z0-9\-_]{20,}$', message='Not a val
 
 
 class Collection(models.Model):
-    main_item = models.ForeignKey('CollectionItem', related_name='parent', null=True, on_delete=models.SET_NULL)
+    main_item = models.OneToOneField('CollectionItem', related_name='parent', null=True, on_delete=models.SET_NULL)
     owner = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
 
     def __str__(self):