---
tags: Python, Django
---
django 多國語言
====
### django版本： 2.1

參考網址
https://automationpanda.com/2018/04/21/django-admin-translations/

修改 "settings.py"

LANGUAGE_CODE = 'en-us'  # or other appropriate code
USE_I18N = True
USE_L10N = True
LOCALE_PATHS = [os.path.join(BASE_DIR, 'locale')]

MIDDLEWARE = [
    # ...
    'django.middleware.locale.LocaleMiddleware',
    # ...
]

修改urls.py

from django.conf.urls.i18n import i18n_patterns
from django.contrib import admin
from django.urls import path
 
urlpatterns = i18n_patterns(
    # ...
    path('admin/', admin.site.urls),
    # ...
 
    # If no prefix is given, use the default language
    prefix_default_language=False
)

兩個指令建立語言檔

#Generate message files for a desired language
django-admin makemessages -l zh_Hans
 
#After adding translations to the .po files, compile the messages
django-admin compilemessages

## 建立語言切換按鈕

在專案中任何位置放入 templatetags/i18n_switcher.py
內容如下

from django import template
from django.template.defaultfilters import stringfilter
from django.conf import settings

register = template.Library()


def switch_lang_code(path, language):
    # Get the supported language codes
    lang_codes = [c for (c, name) in settings.LANGUAGES]

    # Validate the inputs
    if path == '':
        raise Exception('URL path for language switch is empty')
    elif path[0] != '/':
        raise Exception('URL path for language switch does not start with "/"')
    elif language not in lang_codes:
        raise Exception('%s is not a supported language code' % language)

    # Split the parts of the path
    parts = path.split('/')

    # Add or substitute the new language prefix
    if parts[1] in lang_codes:
        parts[1] = language
    else:
        parts[0] = "/" + language

    # Return the full new path
    return '/'.join(parts)


@register.filter
@stringfilter
def switch_i18n_prefix(path, language):
    """takes in a string path"""
    return switch_lang_code(path, language)


@register.filter
def switch_i18n(request, language):
    """takes in a request object and gets the path from it"""
    return switch_lang_code(request.get_full_path(), language)

自定義 admin頁

{% extends "admin/base_site.html" %}

{% load static %}
{% load i18n %}

<!-- custom filter module -->
{% load i18n_switcher %}

{% block extrahead %}
    <link rel="shortcut icon" href="{% static 'images/favicon.ico' %}" />
{% endblock %}



{% block userlinks %}
    <li name="" id="" class="dropdown">
        <a href="#" class="dropdown-toggle" data-toggle="dropdown">語言
            <span class="caret"></span>
            <ul class="dropdown-menu">
                <li><a href="{{ request|switch_i18n:'en' }}">
                        <span style="font-size:1em;">🇺🇸 English</span>
                    </a>
                </li>
                <li><a href="{{ request|switch_i18n:'zh-hant' }}">
                        <span style="font-size:1em;">🇹🇼 繁體中文</span>
                    </a>
                </li>
            </ul>
        </a>
    </li>
{% endblock %}

### 如何整合 vuejs的 i18n ?
https://djaodjin.com/blog/integrating-django-i18-with-jinja2-and-vuejs.blog