Now I can go to bed

lib/DB/BusinessModel.py

@@ -66,11 +66,13 @@ class BusinessModel(QAbstractTableModel):
 
     def __init__(self):
         super().__init__()
-        self.__data = self.__getData()
+        self.__getData()
 
     def __getData(self, criterion = "Alle"):
+        self.beginResetModel()
         rows, self.__visible_columns = BusinessDAO().getBusiness(criterion)
-        return rows
+        self.__data = rows
+        self.endResetModel()
 
     def rowCount(self, parent= QModelIndex()):
         return len (self.__data)
@@ -109,14 +111,13 @@ class BusinessModel(QAbstractTableModel):
 
     @Slot(str)
     def viewCriterion(self, criterion):
-        self.beginResetModel()
-        self.__data = self.__getData(criterion)
-        self.endResetModel()
+        self.__getData(criterion)
+
 
     @Slot(dict, int)
     def addBusiness(self, business, contact_id):
         BusinessDAO().addBusiness(business, contact_id)
-        self.__data = self.__getData()
+        self.__getData()
 
     @Slot(dict)
     def setContact(self, contact):