[FIX] datetime_formatter - Set the correct locale to translate months and days

datetime_formatter/__openerp__.py

@@ -5,9 +5,10 @@
 {
     "name": "Date & Time Formatter",
     "summary": "Helper functions to give correct format to date[time] fields",
-    "version": "8.0.1.0.0",
+    "version": "8.0.1.0.1",
     "category": "Tools",
     "website": "https://grupoesoc.es",
+    "images": [],
     "author": "Grupo ESOC Ingeniería de Servicios, "
               "Odoo Community Association (OCA)",
     "license": "AGPL-3",

datetime_formatter/models.py

@@ -1,8 +1,11 @@
 # -*- coding: utf-8 -*-
 # © 2015 Grupo ESOC Ingeniería de Servicios, S.L.U. - Jairo Llopis
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+import locale
+import logging
 from datetime import datetime, timedelta
-from openerp import api, exceptions, fields, models
+
+from openerp import api, exceptions, fields, models, tools
 from openerp.tools import (DEFAULT_SERVER_DATE_FORMAT,
                            DEFAULT_SERVER_TIME_FORMAT)
 from . import exceptions as ex
@@ -12,6 +15,8 @@
 MODE_DATE = "MODE_DATE"
 MODE_TIME = "MODE_TIME"
 
+_logger = logging.getLogger(__name__)
+
 
 class ResLang(models.Model):
     _inherit = "res.lang"
@@ -61,6 +66,23 @@ def best_match(self, lang=None, failure_safe=True):
 
         return record
 
+    @api.model
+    def _set_locale(self, lang=None):
+        """Set the locale to translate months and days."""
+        fail = True
+        for ln in tools.get_locales(lang):
+            try:
+                locale.setlocale(locale.LC_TIME, str(ln))
+                fail = False
+                break
+            except locale.Error:
+                continue
+        if fail:
+            lc = locale.getdefaultlocale()[0]
+            msg = ('Unable to get information for locale %s. Information '
+                   'from the default locale (%s) have been used.')
+            _logger.warning(msg, lang, lc)
+
     @api.model
     def datetime_formatter(self, value, lang=None, template=MODE_DATETIME,
                            separator=" ", failure_safe=True):
@@ -89,6 +111,10 @@ def datetime_formatter(self, value, lang=None, template=MODE_DATETIME,
         # Get the correct lang
         lang = self.best_match(lang)
 
+        # Backup the current locale and set the correct one
+        locale_backup = locale.getlocale(locale.LC_TIME)
+        self._set_locale(lang.code)
+
         # Get the template
         if template in {MODE_DATETIME, MODE_DATE, MODE_TIME}:
             defaults = []
@@ -117,4 +143,7 @@ def datetime_formatter(self, value, lang=None, template=MODE_DATETIME,
             # Convert to time
             value = (datetime.min + timedelta(hours=value)).time()
 
-        return value.strftime(template)
+        res = value.strftime(template)
+        # Restore the locale
+        locale.setlocale(locale.LC_TIME, locale_backup)
+        return res