from django.conf import settings

from django.core.management.base import BaseCommand, CommandError, NoArgsCommand

from modeltranslation.translator import translator

from modeltranslation.utils import build_localized_fieldname

class Command(NoArgsCommand):

    help = 'Updates the default translation fields of all or the specified'\

           'translated application using the value of the original field.'

    # args = '[app_name]'

    def handle(self, **options):        

        default_lang = settings.LANGUAGES[0][0]        

        print "Using default language:", default_lang        

        for model, trans_opts in translator._registry.items():            

            print "Updating data of model '%s'" % model   

            for obj in model.objects.all():                            

                for fieldname in trans_opts.fields:

                    def_lang_fieldname = build_localized_fieldname(fieldname, default_lang)

                    # print "setting %s from %s to %s." % (def_lang_fieldname, fieldname, obj.__dict__[fieldname])

                    if not getattr(obj, def_lang_fieldname):

                        setattr(obj, def_lang_fieldname, obj.__dict__[fieldname])

                obj.save()