book/line: berechtigungen für owner, beobachter, bearbeiter + tests

wizard_openline.py

@@ -7,6 +7,7 @@ from trytond.model import ModelView, ModelSQL, fields
 from trytond.pyson import PYSONEncoder
 from trytond.wizard import Wizard, StateView, StateAction, Button
 from trytond.i18n import gettext
+from trytond.pool import Pool
 
 
 class OpenCashBookStart(ModelView):
@@ -42,6 +43,20 @@ class OpenCashBook(Wizard):
             ])
     open_ = StateAction('cashbook.act_line_view')
 
+    def default_start(self, fields):
+        """ setup form
+        """
+        Book = Pool().get('cashbook.book')
+
+        result = {}
+
+        books = Book.search([])
+        print('\n## books:', books)
+        if len(books) == 1:
+            result['cashbook'] = books[0].id
+
+        return result
+
     def do_open_(self, action):
         action['pyson_context'] = PYSONEncoder().encode({
             'cashbook': self.start.cashbook.id,