python 2.7 - Django not translating the site properly -

after spending many hours on this, stackoverflow rescue.

i configured settings.py below:

... time_zone = 'europe/berlin'  language_code = 'de'  languages = (   ('en', u'english'),   ('de', u'german'),   ('fr', u'french'), )  use_i18n = true  use_l10n = true  middleware_classes = (     'django.middleware.locale.localemiddleware',     'django.middleware.common.commonmiddleware',     'django.contrib.sessions.middleware.sessionmiddleware',     'django.middleware.csrf.csrfviewmiddleware',     'django.contrib.auth.middleware.authenticationmiddleware',     'django.contrib.messages.middleware.messagemiddleware', )  template_context_processors = (     'django.contrib.auth.context_processors.auth',     'django.core.context_processors.debug',     'django.core.context_processors.i18n',     'django.core.context_processors.request',     'django.core.context_processors.static',     'django.contrib.messages.context_processors.messages', ) ... 

in base.html file, have form below:

<form action="/i18n/setlang/" method="post">     {% csrf_token %}     <input name="next" type="hidden" value="/" />     <select name="language">         {% get_language_info_list languages languages %}         {% language in languages %}             <option value="{{ language.code }}">{{ language.name_local }} ({{ language.code }})</option>         {% endfor %}     </select>     <input type="submit" value="go" /> </form> 

my urls.py:

urlpatterns = patterns('',     url(r'^i18n/', include('django.conf.urls.i18n')),     url(r'^$', 'mainapp.views.index'), #root ) 

in same base.html file, have on top {% load i18n %} , in body, have sample {% trans "this title." %}. before running server, did:

django-admin.py makemessages -l de django-admin.py makemessages -l fr 

the sample text above picked makemessages, , provided respective translations msgstr. after that, did django-admin.py compilemessages. command ran nicely , generated .mo files in respective locale folders.

i run server , the form not work. stackoverflow post, hinted remove #, fuzzy lines, did. doing wrong?

thanks!

you should put localemiddleware after sessionmiddleware in middleware_classes:

middleware_classes = ( 'django.middleware.common.commonmiddleware', 'django.contrib.sessions.middleware.sessionmiddleware', 'django.middleware.locale.localemiddleware', .... ) 

the order of middleware classes important. localemiddleware uses session data detect user language, must come after sessionmiddleware. mentioned in docs here https://docs.djangoproject.com/en/1.3/topics/i18n/deployment/#how-django-discovers-language-preference

let's hope works you!