I am trying to build a web site in both English and Bulgarian using the Django framework. My idea is the user should click on a button, the page will reload and the language will be changed. This is how I am trying to do it:

In my html I hava a the button tag <button id='btn' onclick="changeLanguage();" type="button"> ... </button>

An excerpt from cookies.js:

function changeLanguage() {
    if (getCookie('language') == 'EN') {
        document.getElementById('btn').innerHTML = getCookie('language');
        setCookie("language", 'BG');
    } else {
        document.getElementById('btn').innerHTML = getCookie('language');
        setCookie("language", 'EN');
    }
}

function setCookie(sName, sValue, oExpires, sPath, sDomain, bSecure) {
    var sCookie = sName + "=" + encodeURIComponent(sValue);
    if (oExpires) {
        sCookie += "; expires=" + oExpires.toGMTString();
    }
    if (sPath) {
        sCookie += "; path=" + sPath;
    }
    if (sDomain) {
        sCookie += "; domain=" + sDomain;
    }
    if (bSecure) {
        sCookie += "; secure";
    }
    document.cookie = sCookie;
}

And in my views.py file this is the situation

@base
def index(request):
    if request.session['language'] == 'EN':
        return """<b>%s</b>""" % "Home" 
    else request.session['language'] == 'BG':
        return """<b>%s</b>""" % "??????"

So I know that my JS changes the value of the language cookie but I think Django doesn't get that. On the other hand when I set and get the cookie in my Python code again the cookie is set. My question is whether there is a way to make JS and Django work together - JavaScript sets the cookie value and Python only reads it when asked and takes adequate actions?

Thank you.