translation_django2.2.md

Traduction django 2.2:

https://docs.djangoproject.com/fr/2.2/topics/i18n/translation/#how-django-discovers-language-preference

settings.py

	MIDDLEWARE = [
		'django.contrib.sessions.middleware.SessionMiddleware',
		'django.middleware.locale.LocaleMiddleware',
		'django.middleware.common.CommonMiddleware',
	]

	LANGUAGE_CODE = os.environ.get('LANGUAGE_CODE', 'fr')
	TIME_ZONE = os.environ.get('TIME_ZONE', 'Indian/Reunion')

	USE_I18N = True
	USE_L10N = True
	USE_TZ = True

	LOCALE_PATHS = (
			os.path.join(BASE_DIR, 'locale'),
	)

views.py

	from django.utils.translation import ugettext_lazy as _

Template

{% load i18n %}
<div class="sous-element-texte">{% trans 'RETOUR' %}</div>

Fichiers de traduction *.po

rootApp/locale/en/LC_MESSAGES/django.po

#: webview/templates/elements/bouton_return:39
msgid "RETOUR"
msgstr "RETURN"

rootApp/locale/en/LC_MESSAGES/django.po

#: webview/templates/elements/bouton_return:39
msgid "RETOUR"
msgstr ""

Après chaque modifications des fichier *.po

django-admin compilemessages

Changement langue à partir du front

// POST le changement de langue au serveur et recharge la page
const selectLanguage = 'fr'
// <input type="hidden" name="csrfmiddlewaretoken" value="0CaEpgyxLdl1m2NEP7W1fCo0esIWDvaGvvFioVMBstsj2GwkFcBCwQyDsEnCg0LZ">
csrf_token = document.querySelector('input[name="csrfmiddlewaretoken"]')
try {
    const body = new URLSearchParams()
    body.append('csrfmiddlewaretoken', csrf_token)
    body.append('language', selectLanguage)
    const response = await fetch(`/i18n/setlang/`, { method: 'post', body })
    if (response.status === 200) {
        window.location.reload()
    } else {
        throw Error(data.message)
    }
} catch (error) {
    console.log('-> fetcht  =', error)
}