book: hierarchie + test

book: Feld 'start_balance' entfernt

line.py

@@ -51,7 +51,8 @@ class Line(Workflow, ModelSQL, ModelView):
     __name__ = 'cashbook.line'
 
     cashbook = fields.Many2One(string='Cashbook', required=True, select=True,
-        model_name='cashbook.book', ondelete='CASCADE', readonly=True)
+        model_name='cashbook.book', ondelete='CASCADE', readonly=True,
+        domain=[('btype', '!=', None)])
     date = fields.Date(string='Date', required=True, select=True,
         states=STATES, depends=DEPENDS)
     month = fields.Function(fields.Integer(string='Month', readonly=True),
@@ -607,8 +608,8 @@ class Line(Workflow, ModelSQL, ModelView):
             return 2
 
     @fields.depends('id', 'date', 'cashbook', \
-        '_parent_cashbook.start_balance', '_parent_cashbook.id',\
-        'reconciliation', '_parent_reconciliation.start_amount',
+        '_parent_cashbook.id', 'reconciliation', \
+        '_parent_reconciliation.start_amount',\
         '_parent_reconciliation.state')
     def on_change_with_balance(self, name=None):
         """ compute balance until current line, with current sort order,
@@ -646,7 +647,7 @@ class Line(Workflow, ModelSQL, ModelView):
             query = [
                 ('cashbook.id', '=', self.cashbook.id),
                 ]
-            balance = self.cashbook.start_balance
+            balance = Decimal('0.0')
 
             # get existing reconciliation, starting before current line
             # this will speed up calculation of by-line-balance