1 files changed, 22 insertions, 11 deletions
diff --git a/archaeological_operations/models.py b/archaeological_operations/models.py
index d865c1ff9..c7a8c94ac 100644
--- a/archaeological_operations/models.py
+++ b/archaeological_operations/models.py
@@ -335,21 +335,32 @@ class Operation(BaseHistorizedItem, OwnPerms, ValueGetter, ShortMenuItem):
         return (max_val + 1) if max_val else 1
 
     @classmethod
-    def get_years(cls):
-        max_year = datetime.date.today().year + 1
-        return [res['year'] for res in list(
-                cls.objects.exclude( year__isnull=True
-                          ).exclude(year__gt=max_year
-                          ).values('year'
-                          ).annotate(Count("id")).order_by())]
+    def get_periods(cls, slice='year', fltr={}):
+        q = cls.objects
+        if fltr:
+            q = q.filter(**fltr)
+        if slice == 'year':
+            max_year = datetime.date.today().year + 1
+            return [res['year'] for res in list(
+                            q.exclude( year__isnull=True
+                              ).exclude(year__gt=max_year
+                              ).values('year'
+                              ).annotate(Count("id")).order_by())]
+        return []
 
     @classmethod
-    def get_by_year(cls, year):
-        return cls.objects.filter(year=year)
+    def get_by_year(cls, year, fltr={}):
+        q = cls.objects
+        if fltr:
+            q = q.filter(**fltr)
+        return q.filter(year=year)
 
     @classmethod
-    def get_total_number(cls):
-        return cls.objects.count()
+    def get_total_number(cls, fltr={}):
+        q = cls.objects
+        if fltr:
+            q = q.filter(**fltr)
+        return q.count()
 
     year_index_lbl = _(u"Operation code")
     @property