event_generate_quotation_from_registration/models/event_registration_financier.py

@@ -17,6 +17,10 @@ class EventRegistrationFinancier(models.Model):
     financier_id = fields.Many2one('res.partner', string="Financeur", required=True)
     terms = fields.Char('Modalités')
     amount = fields.Monetary('Montant', currency_field="company_currency_id")
+    state = fields.Selection(
+        related='quotation_id.state',
+        string="Order Status",
+        copy=False, store=True, precompute=True)
 
 
     def get_product_id(self):

event_generate_quotation_from_registration/views/event_registration_views.xml

@@ -10,8 +10,9 @@
                 <group name="quotation" string="Financement" colspan="1">
                     <field name="financier_ids" nolabel="1" colspan="2">
                         <tree editable="bottom">
-                            <field name="financier_id" />
-                            <field name="amount" />      
+			    <field name="state" invisible="1"/>
+			    <field name="financier_id" attrs="{'readonly': [('state', 'in', ['done', 'cancel'])]}"/>
+                            <field name="amount" attrs="{'readonly': [('state', 'in', ['done', 'cancel'])]}" />
 			    <field name="terms" />
                             <field name="quotation_id" readonly="True" />
                         </tree>