flask_babel_setup_with_locale_selector_function.py

1from flask import Flask, request
2from flask_babel import Babel
3
4def get_locale():
5    # if the user is logged in, use the locale from the user settings
6    user = getattr(request, 'user', None)
7    if user is not None:
8        return user.locale
9    # otherwise try to guess the language from the user accept
10    # header the browser transmits.  We support de/fr/en in this
11    # example.  The best match wins.
12    return request.accept_languages.best_match(['de', 'fr', 'en'])
13
14app = Flask(__name__)
15babel = Babel(app, locale_selector=get_locale)