kategorie: constraint gegen gleiche Namen auf toplevel,

importer: list/erstellt kategorie, list transaktionen

category.py

@@ -3,12 +3,13 @@
 # The COPYRIGHT file at the top level of this repository contains the
 # full copyright notices and license terms.
 
-from trytond.model import ModelView, ModelSQL, fields, Unique, tree, sequence_ordered
+from trytond.model import ModelView, ModelSQL, fields, Unique, Exclude, tree, sequence_ordered
 from trytond.transaction import Transaction
 from trytond.pool import Pool
 from trytond.pyson import Eval, If, Bool
 from trytond.exceptions import UserError
 from trytond.i18n import gettext
+from sql.operators import Equal
 
 
 sel_categorytype = [
@@ -51,7 +52,15 @@ class Category(tree(separator='/'), sequence_ordered(), ModelSQL, ModelView):
         cls._order.insert(0, ('name', 'ASC'))
         t = cls.__table__()
         cls._sql_constraints.extend([
-                ('name_uniq', Unique(t, t.name, t.company, t.parent), 'cashbook.msg_category_name_unique'),
+                ('name_uniq',
+                    Unique(t, t.name, t.company, t.parent),
+                    'cashbook.msg_category_name_unique'),
+                ('name2_uniq',
+                    Exclude(t,
+                        (t.name, Equal),
+                        (t.cattype, Equal),
+                        where=(t.parent == None)),
+                    'cashbook.msg_category_name_unique'),
             ])
 
     @classmethod