49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
from flask import g, request, Flask
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from flask_login import current_user
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from typing import Optional
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LANGUAGES = {
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'en': 'English',
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'de': 'Deutsch'
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}
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def init_babel(app: Flask) -> None:
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babel = app.babel
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@babel.localeselector
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def get_locale() -> str:
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# if a user is logged in, use the locale from the user settings
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user = current_user # type: Optional[User]
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return 'de'
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# prefer lang argument
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if 'lang' in request.args:
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lang = request.args['lang'] # type: str
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if lang in LANGUAGES:
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if not isinstance(user, User):
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return lang
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user.locale = lang
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db.session.commit()
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if isinstance(user, User):
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return user.locale
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# otherwise try to guess the language from the user accept
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# header the browser transmits. We support de/fr/en in this
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# example. The best match wins.
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return request.accept_languages.best_match(['de'])
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@babel.timezoneselector
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def get_timezone() -> Optional[str]:
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# user = getattr(g, 'user', None)
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# if user is not None:
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# return user.timezone
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return None
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@app.context_processor
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def get_locale_jinja() -> dict:
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def get_locale_() -> str:
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return get_locale()
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return dict(get_locale=get_locale_)
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