Handle version 3.0 of flask-babel

cps/__init__.py

@@ -36,7 +36,7 @@ from .reverseproxy import ReverseProxied
 from .server import WebServer
 from .dep_check import dependency_check
 from .updater import Updater
-from .babel import babel
+from .babel import babel, get_locale
 from . import config_sql
 from . import cache_buster
 from . import ub, db
@@ -156,8 +156,11 @@ def create_app():
     app.secret_key = os.getenv('SECRET_KEY', config_sql.get_flask_session_key(ub.session))
 
     web_server.init_app(app, config)
-
+    if hasattr(babel, "localeselector"):
         babel.init_app(app)
+        babel.localeselector(get_locale)
+    else:
+        babel.init_app(app, locale_selector=get_locale)
 
     from . import services
 

cps/babel.py

@@ -9,8 +9,6 @@ log = logger.create()
 
 babel = Babel()
 
-
-@babel.localeselector
 def get_locale():
     # if a user is logged in, use the locale from the user settings
     user = getattr(g, 'user', None)

requirements.txt

@@ -1,7 +1,7 @@
 APScheduler>=3.6.3,<3.10.0
 werkzeug<2.1.0
 Babel>=1.3,<3.0
-Flask-Babel>=0.11.1,<2.1.0
+Flask-Babel>=0.11.1,<3.1.0
 Flask-Login>=0.3.2,<0.6.3
 Flask-Principal>=0.3.2,<0.5.1
 backports_abc>=0.4
@@ -11,10 +11,10 @@ PyPDF>=3.0.0,<3.3.0
 pytz>=2016.10
 requests>=2.11.1,<2.28.0
 SQLAlchemy>=1.3.0,<1.5.0
-tornado>=4.1,<6.2
+tornado>=4.1,<6.3
 Wand>=0.4.4,<0.7.0
 unidecode>=0.04.19,<1.4.0
 lxml>=3.8.0,<5.0.0
-flask-wtf>=0.14.2,<1.1.0
+flask-wtf>=0.14.2,<1.2.0
 chardet>=3.0.0,<4.1.0
 advocate>=1.0.0,<1.1.0