Change language Flask Babel manually

Question

I\'m using Flask Babel to translate my Flask Python app. At moment I only have the translation mechanism by locale but what if the user besides his location wants to change

Answer 1

A good way to do this is shown in the docs of Flask-Admin

@babel.localeselector
def get_locale():
    if request.args.get('lang'):
        session['lang'] = request.args.get('lang')
    return session.get('lang', 'en')

Now, you could try a French version of the application at: http://localhost:5000/admin/?lang=fr.

You can still specify the default language via BABEL_DEFAULT_LOCALE.