From 24284cce3800a1d26125d5c45ffb56b07f3dd953 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sun, 16 Jun 2019 19:14:46 +0200
Subject: [PATCH] Require tax on tax line

Without a proper tax, the tax line is never shown in any tax code reports.

issue8364
review261511002
---
 invoice.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/invoice.py b/invoice.py
index 968e6d26eb..8c87ced7bc 100644
--- a/invoice.py
+++ b/invoice.py
@@ -2353,11 +2353,12 @@ class InvoiceTax(sequence_ordered(), ModelSQL, ModelView):
         if self.account.party_required:
             line.party = self.invoice.party
         line.origin = self
-        tax_line = TaxLine()
-        tax_line.amount = amount
-        tax_line.type = 'tax'
-        tax_line.tax = self.tax
-        line.tax_lines = [tax_line]
+        if self.tax:
+            tax_line = TaxLine()
+            tax_line.amount = amount
+            tax_line.type = 'tax'
+            tax_line.tax = self.tax
+            line.tax_lines = [tax_line]
         return [line]
 
     def _credit(self):