Use babel language selector

hiboo/__init__.py

@@ -14,7 +14,7 @@ def create_app_from_config(config):
     config.init_app(app)
     models.db.init_app(app)
     utils.limiter.init_app(app)
-    utils.babel.init_app(app)
+    utils.translation.init_app(app)
     utils.login.init_app(app)
     utils.login.user_loader(models.User.get)
     utils.migrate.init_app(app, models.db)

hiboo/utils.py

@@ -4,6 +4,7 @@ import flask_migrate
 import flask_babel
 import flask_limiter
 import flask_redis
+import babel
 
 from werkzeug.contrib import fixers
 from werkzeug import routing
@@ -100,12 +101,14 @@ limiter = flask_limiter.Limiter(key_func=lambda: current_user.id)
 
 
 # Application translation
-babel = flask_babel.Babel()
+translation = flask_babel.Babel()
 
-@babel.localeselector
+@translation.localeselector
 def get_locale():
-    translations = list(map(str, babel.list_translations()))
-    return flask.request.accept_languages.best_match(translations)
+    return babel.negotiate_locale(
+        [l.replace('-', '_') for l in flask.request.accept_languages.values()],
+        list(map(str, translation.list_translations()))
+    )
 
 
 # Data migrate