这是我遇到的解决方案:
首先,您设置一条路由,该路由将处理语言更改并将所选语言存储在会话中:
@app.route('/language/<language>')
def set_language(language=None):
session['language'] = language
return redirect(url_for('index'))
@babel.localeselector
def get_locale():
# if the user has set up the language manually it will be stored in the session,
# so we use the locale from the user settings
try:
language = session['language']
except KeyError:
language = None
if language is not None:
return language
return request.accept_languages.best_match(app.config['LANGUAGES'].keys())
您还必须能够从模板访问CURRENT_LANGUAGE,因此可以注入它:
@app.context_processor
def inject_conf_var():
return dict(
AVAILABLE_LANGUAGES=app.config['LANGUAGES'],
CURRENT_LANGUAGE=session.get('language',request.accept_languages.best_match(app.config['LANGUAGES'].keys())))
最后,在模板上,您可以选择所需的语言:
{% for language in AVAILABLE_LANGUAGES.items() %}
{% if CURRENT_LANGUAGE == language[0] %}
{{ language[1] }}
{% else %}
<a href="{{ url_for('set_language', language=language[0]) }}" >{{ language[1] }}</a>
{% endif %}
{% endfor %}
应用程序config.py包含以下常量:
LANGUAGES = {
'en': 'English',
'es': 'Spanish'
}
希望这可以帮助!