Search nodes on manual refresh

src/sakia/core/net/node.py

@@ -334,6 +334,9 @@ class Node(QObject):
         if not self._ws_tasks['peer']:
             self._ws_tasks['peer'] = asyncio.ensure_future(self.connect_peers())
 
+        if manual:
+            asyncio.ensure_future(self.request_peers())
+        
         if self._refresh_counter % 20 == 0 or manual:
             self.refresh_informations()
             self.refresh_uid()

src/sakia/models/network.py

@@ -89,7 +89,7 @@ class NetworkFilterProxyModel(QSortFilterProxyModel):
             if index.column() == source_model.columns_types.index('current_hash') :
                 return source_data[:10]
 
-            if index.column() == source_model.columns_types.index('current_time'):
+            if index.column() == source_model.columns_types.index('current_time') and source_data:
                 return QLocale.toString(
                             QLocale(),
                             QDateTime.fromTime_t(source_data),