Main image: fix bad "on_delete" behaviour

2 files changed, 28 insertions, 0 deletions

diff --git a/archaeological_operations/migrations/0047_auto_20190206_1442.py b/archaeological_operations/migrations/0047_auto_20190206_1442.py
new file mode 100644
index 000000000..b4de62f23
--- /dev/null
+++ b/archaeological_operations/migrations/0047_auto_20190206_1442.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.10 on 2019-02-06 14:42
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('archaeological_operations', '0046_migrate_main_image'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='archaeologicalsite',
+            name='main_image',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='main_image_sites', to='ishtar_common.Document', verbose_name='Main image'),
+        ),
+        migrations.AlterField(
+            model_name='operation',
+            name='main_image',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='main_image_operations', to='ishtar_common.Document', verbose_name='Main image'),
+        ),
+    ]
diff --git a/archaeological_operations/models.py b/archaeological_operations/models.py
index e711def95..162692e20 100644
--- a/archaeological_operations/models.py
+++ b/archaeological_operations/models.py
@@ -266,6 +266,7 @@ class ArchaeologicalSite(BaseHistorizedItem, OwnPerms, ValueGetter,
         blank=True)
     main_image = models.ForeignKey(
         Document, related_name='main_image_sites',
+        on_delete=models.SET_NULL,
         verbose_name=_(u"Main image"), blank=True, null=True)
     cached_label = models.TextField(_(u"Cached name"),
                                     null=True, blank=True, db_index=True)
@@ -853,6 +854,7 @@ class Operation(ClosedItem, BaseHistorizedItem, OwnPerms, ValueGetter,
         blank=True)
     main_image = models.ForeignKey(
         Document, related_name='main_image_operations',
+        on_delete=models.SET_NULL,
         verbose_name=_(u"Main image"), blank=True, null=True)
     cached_label = models.CharField(_(u"Cached name"), max_length=500,
                                     null=True, blank=True, db_index=True)