kategorie, verknüpfung zu kassenbuch, forms

book.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.model import ModelSQL, fields
+from trytond.transaction import Transaction
+from trytond.pool import Pool, PoolMeta
+
+
+class Cashbook(metaclass=PoolMeta):
+    __name__ = 'cashbook.book'
+
+    categories = fields.Many2Many(string='Categories',
+        relation_name='cashbook.bookcategory-rel',
+        origin='cashbook', target='category')
+
+# end Cashbook
+
+
+class CategoryCashbookRel(ModelSQL):
+    'Category Cashbook Relation'
+    __name__ = 'cashbook.bookcategory-rel'
+
+    category = fields.Many2One(string='Category', required=True, select=True,
+        model_name='cashbook.bookcategory', ondelete='CASCADE')
+    cashbook = fields.Many2One(string='Cashbook', required=True, select=True,
+        model_name='cashbook.book', ondelete='CASCADE')
+
+# end CategoryCashbookRel