tools (common/data_objects): new avatar_basename property

sat/tools/common/data_objects.py

@@ -21,6 +21,7 @@
 
 from sat.core.constants import Const as C
 from sat.tools.common import data_format
+from os.path import basename
 
 try:
     from jinja2 import Markup as safe
@@ -361,6 +362,13 @@ class Identity(object):
         self.jid_str = jid_str
         self.data = data if data is not None else {}
 
+    @property
+    def avatar_basename(self):
+        try:
+            return basename(self.data['avatar']['path'])
+        except (TypeError, KeyError):
+            return None
+
     def __getitem__(self, key):
         return self.data[key]