django - Why is request.session['django_language'] is being overriden by browser preferred language? -

using django, i'd users able choose site language.

it working fine when user preferred language set in browser english. user can switch between english , portuguese expected.

however, when change browser preferred language language switcher stops working (i tested in opera, google chrome, firefox , epiphany - couldn't test on ie or safari).

i suppose did wrong, cannot figure out what. puzzles me works fine when preferred language set default...

django documentation says use following choose language:

first, looks django_language key in current user’s session. failing that, looks cookie. failing that, looks @ accept-language http header. header sent browser , tells server language(s) prefer, in order priority. django tries each language in header until finds 1 available translations. failing that, uses global language_code setting.

why getting different behavior in language switcher when browser has preferred language when has default?

---

my settings.py respecting middleware follows

middleware_classes = (      'django.contrib.sessions.middleware.sessionmiddleware',      'django.middleware.locale.localemiddleware',      'django.middleware.common.commonmiddleware',      'django.middleware.csrf.csrfviewmiddleware',      'django.contrib.auth.middleware.authenticationmiddleware',      'django.contrib.messages.middleware.messagemiddleware',  )  

my locale folder contains structure:

locale/     pt_br/         lc_messages/             django.mo             django.po 

my language switcher (in template) follows:

    <div id="secondary-menu" class="navigation">         <ul class="menu">             <li><a href="/about-us" > {{ second1 }}</a></li>             <li><a href="/free-culture" > {{ second2 }}</a></li>             <li><a > {{ second3 }}</a>                 <ul>                     <li><form name="setlangenglish" method="post" action="/i18n/setlang/">{% csrf_token %}                         <input name="next" type="hidden" value="/" />                         <input type="hidden" name="language" value="en-us"/>                         <input class="language-switcher" type="submit" alt="english" name="submit" value="english"/>                         </form>                     </li>                     <li><form name="setlangportuguese" method="post" action="/i18n/setlang/">{% csrf_token %}                          <input name="next" type="hidden" value="/" />                          <input type="hidden" name="language" value="pt-br"/>                         <input class="language-switcher" type="submit" alt="portugues" name="submit" value="portugues"/>                         </form>                     </li>                 </ul>             </li>         </ul>     </div> 

i found out problem was.

my language switcher setting english using "en-us".

this right if had more 1 english options. in case should have en_us folder (and other django.po , django.mo in it) inside locale folder.

as want use 1 english option can use "en" value of switcher. no additional locale folder needed, because "en" django's default.

for may find helpful, here fix:

the line:

< input type="hidden" name="language" value="en-us"/>

should be:

< input type="hidden" name="language" value="en"/>