Remove starting wildcard when searching on codes and numbers

issue7347
review64541002

CHANGELOG

@@ -1,3 +1,5 @@
+* Remove starting wildcard when searching on codes and numbers
+
 Version 5.0.0 - 2018-10-01
 * Bug fixes (see mercurial logs for details)
 * Remove support for Python 2.7

product.py

@@ -13,6 +13,7 @@ from trytond.transaction import Transaction
 from trytond.pool import Pool
 from trytond import backend
 from trytond.config import config
+from trytond.tools import lstrip_wildcard
 from trytond.tools.multivalue import migrate_property
 from trytond.modules.company.model import (
     CompanyMultiValueMixin, CompanyValueMixin)
@@ -309,8 +310,11 @@ class Product(
             bool_op = 'AND'
         else:
             bool_op = 'OR'
+        code_value = clause[2]
+        if clause[1].endswith('like'):
+            code_value = lstrip_wildcard(clause[2])
         return [bool_op,
-            ('code',) + tuple(clause[1:]),
+            ('code', clause[1], code_value) + tuple(clause[3:]),
             ('template.name',) + tuple(clause[1:]),
             ]