bok, line, type, line-open-wizard, context

book.py

@@ -11,6 +11,10 @@ class Book(ModelSQL, ModelView):
     __name__ = 'cashbook.book'
 
     name = fields.Char(string='Name', required=True)
+    btype = fields.Many2One(string='Account Type', required=True,
+        model_name='cashbook.type', ondelete='RESTRICT')
+    lines = fields.One2Many(string='Lines', field='account',
+        model_name='cashbook.line')
 
     @classmethod
     def __setup__(cls):