line/book: sequence für zeilen-nummerierung

book.py

@@ -4,7 +4,7 @@
 # full copyright notices and license terms.
 
 from trytond.model import Workflow, ModelView, ModelSQL, fields, Check
-from trytond.pyson import Eval, Or, Bool
+from trytond.pyson import Eval, Or, Bool, Id
 from trytond.exceptions import UserError
 from trytond.i18n import gettext
 from trytond.transaction import Transaction
@@ -55,6 +55,19 @@ class Book(Workflow, ModelSQL, ModelView):
     reconciliations = fields.One2Many(string='Reconciliations',
         field='cashbook', model_name='cashbook.recon',
         states=STATES, depends=DEPENDS)
+    number_sequ = fields.Many2One(string='Line numbering', required=True,
+        help='Number sequence for numbering of the cash book lines.',
+        model_name='ir.sequence',
+        domain=[
+            ('sequence_type', '=', Id('cashbook', 'sequence_type_cashbook_line')),
+            ['OR',
+                ('company', '=', None),
+                ('company', '=', Eval('company', -1)),
+                ],
+            ],
+        states=STATES, depends=DEPENDS+['company'])
+    number_atcheck = fields.Boolean(string="number when 'Checking'",
+        help="The numbering of the lines is done in the step Check. If the check mark is inactive, this happens with Done.")
     start_balance = fields.Numeric(string='Initial Amount', required=True,
         states={
             'readonly': Or(
@@ -107,6 +120,14 @@ class Book(Workflow, ModelSQL, ModelView):
                 },
             })
 
+    @classmethod
+    def default_number_atcheck(cls):
+        return True
+
+    @classmethod
+    def default_start_number(cls):
+        return 1
+
     @classmethod
     def default_start_balance(cls):
         """ zero