Translation filter on select field

nereid/application.py

@@ -240,12 +240,13 @@ def database(self):
         """
         return self._database
 
-    def transaction(self, http_host):
+    def transaction(self, environ):
         """
         Allows the use of the transaction as a context manager.
         The transaction created loads the user from the known websites
         which is identified through the http_host
         """
+        http_host = environ.get('HTTP_HOST')
         website_name = get_website_from_host(http_host)
         try:
             website = self.websites[website_name]
@@ -259,6 +260,9 @@ def transaction(self, http_host):
             context = {
                 'company': website['company'],
             }
+            path = environ.get('PATH_INFO').split('/')
+            if len(path) > 2:
+                context['language'] = path[1]
             return TransactionManager(
                 self.database_name, website['application_user'], context
             )
@@ -406,7 +410,7 @@ def wsgi_app(self, environ, start_response):
         if not self.initialised:
             self.initialise()
 
-        with self.transaction(environ['HTTP_HOST']) as txn:
+        with self.transaction(environ) as txn:
             with self.request_context(environ):
                 try:
                     response = self.full_dispatch_request()

nereid/helpers.py

@@ -16,6 +16,7 @@
         get_flashed_messages, flash, url_for as flask_url_for)
 from werkzeug import Headers, wrap_file, redirect, abort
 from werkzeug.exceptions import NotFound
+from trytond.pool import Pool
 
 from .globals import session, current_app, request
 
@@ -311,6 +312,25 @@ def _rst_to_html_filter(value):
         return value
 
 
+def _translation_filter(value, name):
+    """
+    Return a value from selection field
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    :param value: str key 
+    :param name: str object,field
+
+    Example::
+        {{ sale.state|translation('sale.sale,state') }}
+        {{ invoice.type|translation('account.invoice,type') }}
+    """
+    model, field = name.split(',')
+    Model = Pool().get(model)
+    fields = Model.fields_get(fields_names=[field])
+    if fields.get('type').get('selection'):
+        return dict(fields.get('type').get('selection'))[value]
+    return value
+
+
 def key_from_list(list_of_args):
     """
     Builds a key from a list of arguments which could be used for caching

nereid/templating.py

@@ -18,7 +18,7 @@
 from trytond.transaction import Transaction
 
 from .globals import request, current_app  # noqa
-from .helpers import _rst_to_html_filter, make_crumbs
+from .helpers import _rst_to_html_filter, _translation_filter, make_crumbs
 
 
 class LazyRenderer(_LazyString):
@@ -116,6 +116,7 @@ def nereid_default_template_ctx_processor():
 
 NEREID_TEMPLATE_FILTERS = dict(
     rst=_rst_to_html_filter,
+    translation=_translation_filter,
 )