ForeignKey: SET_NULL fix

1 files changed, 8 insertions, 2 deletions

diff --git a/ishtar_common/models_imports.py b/ishtar_common/models_imports.py
index e9f0e5d9e..ffb456071 100644
--- a/ishtar_common/models_imports.py
+++ b/ishtar_common/models_imports.py
@@ -128,6 +128,7 @@ class ImporterType(models.Model):
                                    blank=True)
     associated_models = models.ForeignKey(
         ImporterModel, verbose_name=_(u"Associated model"),
+        on_delete=models.SET_NULL,
         related_name='+', blank=True, null=True)
     created_models = models.ManyToManyField(
         ImporterModel, verbose_name=_(u"Models that can accept new items"),
@@ -370,7 +371,9 @@ class ImporterColumn(models.Model):
     importer_type = models.ForeignKey(ImporterType, related_name='columns')
     col_number = models.IntegerField(_(u"Column number"), default=1)
     description = models.TextField(_("Description"), blank=True, null=True)
-    regexp_pre_filter = models.ForeignKey("Regexp", blank=True, null=True)
+    regexp_pre_filter = models.ForeignKey(
+        "Regexp", blank=True, null=True, on_delete=models.SET_NULL,
+    )
     required = models.BooleanField(_(u"Required"), default=False)
     export_field_name = models.CharField(
         _(u"Export field name"), blank=True, null=True, max_length=200,
@@ -472,7 +475,9 @@ class ImportTarget(models.Model):
     """
     column = models.ForeignKey(ImporterColumn, related_name='targets')
     target = models.CharField(u"Target", max_length=500)
-    regexp_filter = models.ForeignKey("Regexp", blank=True, null=True)
+    regexp_filter = models.ForeignKey(
+        "Regexp", blank=True, null=True, on_delete=models.SET_NULL,
+    )
     formater_type = models.ForeignKey("FormaterType")
     force_new = models.BooleanField(_(u"Force creation of new items"),
                                     default=False)
@@ -835,6 +840,7 @@ class Import(models.Model):
         blank=True, null=True, max_length=220, help_text=max_size_help())
     associated_group = models.ForeignKey(
         TargetKeyGroup, blank=True, null=True,
+        on_delete=models.SET_NULL,
         help_text=_(u"If a group is selected, target key saved in this group "
                     u"will be used.")
     )