get current language in flask appbuilder

Question

I have a simple app wrote with Flask Appbuilder, the view.py is as follows. It is part of exmaple in http://flask-appbuilder.readthedocs.io/en/latest/views.html with a little change in method1 where I replaced return 'Hello' with a function that I wish to find.

We can change the language in app (en,fr,ru,...) and translate it. Is there a function to get the current language? (Current_Language()).

from flask_appbuilder import AppBuilder, BaseView, expose, has_access, ModelView
from app import appbuilder, db
from flask import render_template, g
from flask_babel import Babel
from flask_babel import lazy_gettext as _
from flask_appbuilder.models.sqla.interface import SQLAInterface

class MyView(BaseView):    
  default_view = 'method1'    
  @expose('/method1/')
  @has_access
  def method1(self):
    return Current_Language()

appbuilder.add_view(MyView, "Method1", category='My View')

Serafim · Accepted Answer · 2018-05-08 14:18:42Z

1

The appbuilder instance has a bm attribute, which is an instance of the BabelManager class.

This class has a get_locale method that returns the current language your app is using.

class MyView(BaseView):    
    default_view = 'method1'    
    @expose('/method1/')
    @has_access
    def method1(self):
        return appbuilder.bm.get_locale()

You can check the code for the BabelManager class on the project repository.

answered May 8, 2018 at 14:18

Serafim

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user8241626 · Accepted Answer · 2018-05-06 12:43:54Z

1

There is an ambiguity in your question. Do you mean the current server-side language or the client-side language.

The former:

import locale
locale.getlocale()

The latter:

from flask import request
request.headers.get('your-header-name')

The header you are interested in is Accept-Language. But there are caveats when it comes to inferring the client language that way. See https://www.w3.org/International/questions/qa-accept-lang-locales

answered May 6, 2018 at 12:43

user8241626

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