Merge branch 'stable/0.11.z' into prod/pa1ch/0.11.zv0.11.2-pa1ch

1 files changed, 8 insertions, 5 deletions

diff --git a/models.py b/models.py
index 0804a38..6d06793 100644
--- a/models.py
+++ b/models.py
@@ -57,7 +57,8 @@ class Timetable(SlugModel):
     url = models.URLField(max_length=255, verbose_name="URL")
     slug = models.SlugField(max_length=64, default="")
 
-    last_update_date = models.DateTimeField(verbose_name="dernière mise à jour Celcat", null=True)
+    last_update_date = models.DateTimeField(verbose_name="dernière mise à jour Celcat",
+                                            null=True, blank=True)
 
     def __str__(self):
         return self.year.name + " " + self.name
@@ -71,10 +72,12 @@ class Timetable(SlugModel):
 
 class GroupManager(Manager):
     def get_parents(self, group):
-        groups_criteria = Q(subgroup="") | Q(subgroup__startswith=group.subgroup) | \
-                          reduce(lambda x, y: x | y,
-                                 [Q(subgroup=group.subgroup[:i])
-                                  for i in range(1, len(group.subgroup) + 1)])
+        groups_criteria = Q(subgroup="") | Q(subgroup__startswith=group.subgroup)
+
+        if len(group.subgroup) != 0:
+            groups_criteria |= reduce(lambda x, y: x | y,
+                                      [Q(subgroup=group.subgroup[:i])
+                                       for i in range(1, len(group.subgroup) + 1)])
 
         return self.get_queryset().filter(groups_criteria, mention=group.mention,
                                           timetable=group.timetable)