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-rw-r--r--archaeological_operations/models.py8
1 files changed, 6 insertions, 2 deletions
diff --git a/archaeological_operations/models.py b/archaeological_operations/models.py
index 14631bd10..cf44fa52a 100644
--- a/archaeological_operations/models.py
+++ b/archaeological_operations/models.py
@@ -46,14 +46,16 @@ class RemainType(GeneralType):
verbose_name = _(u"Remain type")
verbose_name_plural = _(u"Remain types")
ordering = ('label',)
+
+
post_save.connect(post_save_cache, sender=RemainType)
post_delete.connect(post_save_cache, sender=RemainType)
class Period(GeneralType):
order = models.IntegerField(_(u"Order"))
- start_date = models.IntegerField(_(u"Start date"))
- end_date = models.IntegerField(_(u"End date"))
+ start_date = models.IntegerField(_(u"Start date"), null=True, blank=True)
+ end_date = models.IntegerField(_(u"End date"), null=True, blank=True)
parent = models.ForeignKey("Period", verbose_name=_(u"Parent period"),
blank=True, null=True)
@@ -64,6 +66,8 @@ class Period(GeneralType):
def __unicode__(self):
return self.label
+
+
post_save.connect(post_save_cache, sender=Period)
post_delete.connect(post_save_cache, sender=Period)