From 2cc7fdcf1d87c429e6dd659d822fa7548c5a4125 Mon Sep 17 00:00:00 2001
From: Oscar <oscar.alvarez.montero@gmail.com>
Date: Mon, 15 Nov 2021 10:28:29 -0500
Subject: [PATCH] Fix

---
 sale.py | 57 +++++++++++++++++++++++++++++----------------------------
 1 file changed, 29 insertions(+), 28 deletions(-)

diff --git a/sale.py b/sale.py
index b0b8332..bce90f4 100644
--- a/sale.py
+++ b/sale.py
@@ -1226,37 +1226,38 @@ class WizardSalePayment(Wizard):
         sale = Sale(active_id)
 
         form = self.start
-        device_id = user.sale_device.id if user.sale_device else sale.sale_device.id
-        statements = Statement.search([
-                ('journal', '=', form.journal.id),
-                ('state', '=', 'draft'),
-                ('sale_device', '=', device_id),
-            ], order=[('date', 'DESC')])
-        if not statements:
-            raise DraftStatementError(
-                gettext('sale_pos.msg_not_draft_statement', journal=form.journal.name))
+        if form.payment_amount > 0:
+            device_id = user.sale_device.id if user.sale_device else sale.sale_device.id
+            statements = Statement.search([
+                    ('journal', '=', form.journal.id),
+                    ('state', '=', 'draft'),
+                    ('sale_device', '=', device_id),
+                ], order=[('date', 'DESC')])
+            if not statements:
+                raise DraftStatementError(
+                    gettext('sale_pos.msg_not_draft_statement', journal=form.journal.name))
 
-        if not sale.number:
-            Sale.set_number([sale])
+            if not sale.number:
+                Sale.set_number([sale])
 
-        if not sale.party.account_receivable:
-            raise PartyMissingAccount(
-                gettext('sale_pos.msg_party_without_account_receivable', s=sale.party.name))
-        account = sale.party.account_receivable.id
+            if not sale.party.account_receivable:
+                raise PartyMissingAccount(
+                    gettext('sale_pos.msg_party_without_account_receivable', s=sale.party.name))
+            account = sale.party.account_receivable.id
 
-        if form.payment_amount:
-            payment = StatementLine(
-                statement=statements[0].id,
-                date=date.today(),
-                amount=form.payment_amount,
-                party=sale.party.id,
-                account=account,
-                description=self.start.voucher,
-                sale=active_id,
-                # number=self.start.voucher,
-                # voucher=self.start.voucher,
-            )
-            payment.save()
+            if form.payment_amount:
+                payment = StatementLine(
+                    statement=statements[0].id,
+                    date=date.today(),
+                    amount=form.payment_amount,
+                    party=sale.party.id,
+                    account=account,
+                    description=self.start.voucher,
+                    sale=active_id,
+                    # number=self.start.voucher,
+                    # voucher=self.start.voucher,
+                )
+                payment.save()
 
         if sale.total_amount != sale.paid_amount:
             return 'start'