ForeignKey: SET_NULL fix

1 files changed, 6 insertions, 1 deletions

diff --git a/archaeological_finds/models_finds.py b/archaeological_finds/models_finds.py
index 1bc774aa2..ad15aea88 100644
--- a/archaeological_finds/models_finds.py
+++ b/archaeological_finds/models_finds.py
@@ -284,6 +284,7 @@ class BaseFind(BulkUpdatedItem, BaseHistorizedItem, OwnPerms):
     discovery_date_taq = models.DateField(_(u"Discovery date (TAQ)"),
                                           blank=True, null=True)
     batch = models.ForeignKey(BatchType, verbose_name=_(u"Batch/object"),
+                              on_delete=models.SET_NULL,
                               blank=True, null=True)
     index = models.IntegerField(u"Index", default=0)
     material_index = models.IntegerField(_(u"Material index"), default=0)
@@ -301,6 +302,7 @@ class BaseFind(BulkUpdatedItem, BaseHistorizedItem, OwnPerms):
                                           blank=True, null=True)
     spatial_reference_system = models.ForeignKey(
         SpatialReferenceSystem, verbose_name=_(u"Spatial Reference System"),
+        on_delete=models.SET_NULL,
         blank=True, null=True)
     point_2d = models.PointField(_(u"Point (2D)"), blank=True, null=True)
     point = models.PointField(_(u"Point (3D)"), blank=True, null=True, dim=3)
@@ -1097,6 +1099,7 @@ class Find(BulkUpdatedItem, ValueGetter, BaseHistorizedItem, OwnPerms,
     material_type_quality = models.ForeignKey(
         MaterialTypeQualityType,
         verbose_name=_(u"Material type quality"), related_name='finds',
+        on_delete=models.SET_NULL,
         blank=True, null=True
     )
     volume = models.FloatField(_(u"Volume (l)"), blank=True, null=True)
@@ -1131,7 +1134,7 @@ class Find(BulkUpdatedItem, ValueGetter, BaseHistorizedItem, OwnPerms,
     object_type_quality = models.ForeignKey(
         ObjectTypeQualityType,
         verbose_name=_(u"Object type quality"), related_name='finds',
-        blank=True, null=True
+        on_delete=models.SET_NULL, blank=True, null=True
     )
     integrities = models.ManyToManyField(
         IntegrityType, verbose_name=_(u"Integrity / interest"),
@@ -1166,6 +1169,7 @@ class Find(BulkUpdatedItem, ValueGetter, BaseHistorizedItem, OwnPerms,
     previous_id = models.TextField(_(u"Previous ID"), blank=True, null=True)
     index = models.IntegerField(u"Index", default=0)
     checked_type = models.ForeignKey(CheckedType, verbose_name=_(u"Check"),
+                                     on_delete=models.SET_NULL,
                                      blank=True, null=True)
     check_date = models.DateField(_(u"Check date"),
                                   default=datetime.date.today)
@@ -1195,6 +1199,7 @@ class Find(BulkUpdatedItem, ValueGetter, BaseHistorizedItem, OwnPerms,
     )
     treatment_emergency = models.ForeignKey(
         TreatmentEmergencyType, verbose_name=_(u"Treatment emergency"),
+        on_delete=models.SET_NULL,
         blank=True, null=True
     )
     insurance_value = models.FloatField(_(u"Insurance value"), blank=True,