Fix report trial_balance sum total balance detailed

account.py

@@ -1933,6 +1933,8 @@ class TrialBalanceClassic(Report):
         report_context['company'] = company
         report_context['digits'] = company.currency.digits
         report_context['sumto'] = lambda accounts, field: cls.sumto(accounts, field)
+        report_context['type_balance'] = data['detailed']
+        print('----', data['detailed'])
         return report_context
 
     @classmethod
@@ -1961,7 +1963,6 @@ class TrialBalanceClassic(Report):
                 credit = [in_account.credit]
                 end_balance = [end_account.balance]
 
-
             def sum_amount_to_parent(acc):
                 try:
                     dict_accounts[acc.parent]['debit'].extend(debit)

purchase.py

@@ -51,6 +51,16 @@ class Purchase(metaclass=PoolMeta):
                 res.append(purchase)
         return res
 
+    @classmethod
+    @ModelView.button
+    def process(cls, purchases):
+        Invoice = Pool().get('account.invoice')
+        for purchase in purchases:
+            super(Purchase, cls).process(purchases)
+            reference = purchase.reference
+            for invoice in purchase.invoices:
+                Invoice.write([invoice], {'reference': reference})
+
     @classmethod
     def post_invoices(cls, purchases):
         Invoice = Pool().get('account.invoice')