Compact vat_number

It is better to standardize the format of the vat number using the compact
method of python-stdnum.

issue4445
review14861002

CHANGELOG

@@ -1,3 +1,4 @@
+* compact vat number
 * value Function fields don't set the value anymore
 
 Version 3.4.0 - 2014-10-20

party.py

@@ -1,6 +1,7 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 import logging
+from importlib import import_module
 
 from sql.functions import CharLength
 
@@ -127,6 +128,23 @@ class Party(ModelSQL, ModelView):
     def on_change_with_vat_code(self, name=None):
         return (self.vat_country or '') + (self.vat_number or '')
 
+    @fields.depends('vat_country', 'vat_number')
+    def on_change_with_vat_number(self):
+        if not self.vat_country:
+            return self.vat_number
+        code = self.vat_country.lower()
+        vat_module = None
+        try:
+            module = import_module('stdnum.%s' % code)
+            vat_module = getattr(module, 'vat', None)
+            if not vat_module:
+                vat_module = import_module('stdnum.%s.vat' % code)
+        except ImportError:
+            pass
+        if vat_module:
+            return vat_module.compact(self.vat_number)
+        return self.vat_number
+
     @classmethod
     def search_vat_code(cls, name, clause):
         res = []
@@ -216,25 +234,21 @@ class Party(ModelSQL, ModelView):
         '''
         if not HAS_VATNUMBER:
             return
-        vat_number = self.vat_number
 
         if not self.vat_country:
             return
 
+        vat_number = self.on_change_with_vat_number()
+        if vat_number != self.vat_number:
+            self.vat_number = vat_number
+            self.save()
+
         if not getattr(vatnumber, 'check_vat_' +
                 self.vat_country.lower())(vat_number):
-
-            # Check if user doesn't have put country code in number
-            if vat_number.startswith(self.vat_country):
-                vat_number = vat_number[len(self.vat_country):]
-                Party.write([self], {
-                    'vat_number': vat_number,
+            self.raise_user_error('invalid_vat', {
+                    'vat': vat_number,
+                    'party': self.rec_name,
                     })
-            else:
-                self.raise_user_error('invalid_vat', {
-                        'vat': vat_number,
-                        'party': self.rec_name,
-                        })
 
 
 class PartyCategory(ModelSQL):

setup.py

@@ -92,7 +92,7 @@ setup(name=name,
     license='GPL-3',
     install_requires=requires,
     extras_require={
-        'VAT': ['vatnumber'],
+        'VAT': ['vatnumber', 'python-stdnum'],
         },
     zip_safe=False,
     entry_points="""