_do_create_subscription wizard 'create_subscription'

sale.py

@@ -2,6 +2,7 @@ from trytond.pool import Pool, PoolMeta
 from trytond.model import ModelView, ModelSQL, fields
 from trytond.pyson import Eval, Bool, If
 from trytond.transaction import Transaction
+from trytond.exceptions import UserError
 
 from trytond.wizard import (
     Button, StateAction, StateTransition, StateView, Wizard)
@@ -17,6 +18,21 @@ class CreateSubscriptionStart(ModelView):
                                          required=True)
     invoice_start_date = fields.Date("Invoice Start Date",
                                      help='Billing start date')
+    service = fields.Many2One('sale.subscription.service', "Service")
+    quantity = fields.Float("Quantity", digits='unit')
+    
+    @classmethod
+    def default_start_date(cls):
+        pool = Pool()
+        Date = pool.get('ir.date')
+        return Date.today()
+
+    @classmethod
+    @fields.depends(methods=['default_start_date'])
+    def default_invoice_start_date(self):
+        invoice_start_date = self.default_start_date()
+
+        return invoice_start_date
         
 class CreateSubscription(Wizard):
     'Create Subscription'
@@ -25,8 +41,26 @@ class CreateSubscription(Wizard):
     start = StateView('sale.create.subscription.start',
                       'optical_equipment.create_subscription_view_form',[
                           Button('Cancel', 'end', 'tryton-cancel'),
-                          Button('Create', 'create', 'tryton-ok', default=True),
+                          Button('Create', 'create_subscription', 'tryton-ok', default=True),
                       ])
+    create_subscription = StateAction('sale_subscription.act_subscription_form')
+
+    @property
+    def _subscription_start(self):
+        return dict(
+            start_date = self.start.start_date,
+            end_date = self.start.end_date,
+            invoice_recurrence = self.start.invoice_recurrence,
+            invoice_start_date = self.start.invoice_start_date,
+            service = self.start.service,
+            quantity = self.start.quantity)
+        
+    def do_create_subscription(self, action):
+        pool = Pool()
+        Subscription = pool.get('sale.subscription')
+
+        #subscription = subscription()
+        self._subscription_start
     
 class SaleLine(metaclass=PoolMeta):
     'SaleLine'

view/create_subscription_form.xml

@@ -3,11 +3,12 @@
 this repository contains the full copyright notices and license terms. -->
 <form col="2">
     <image name="tryton-warning" xexpand="0" xfill="0"/>
-    <group col="2" id="create_subscription">
+    <group col="4" id="create_subscription">
         <label
             string="Are you sure to create one subscription these/this sale(s)?"
             id="create_subscription" colspan="2"
             yalign="0.0" xalign="0.0" xexpand="1"/>
+	<newline/>
         <label name="start_date"/>
 	<field name="start_date"/>
 	<label name="end_date"/>
@@ -16,5 +17,9 @@ this repository contains the full copyright notices and license terms. -->
         <field name="invoice_recurrence"/>
 	<label name="invoice_start_date"/>
         <field name="invoice_start_date"/>
+	<label name="service"/>
+        <field name="service"/>
+	<label name="quantity"/>
+        <field name="quantity"/>
     </group>
 </form>