Django 多语言模型/按语言过滤帖子

Question

有我的简单博客模型；

class Article(models.Model):

    author = models.ForeignKey("auth.User",on_delete = models.CASCADE, verbose_name="Author")
    title_en = models.CharField(max_length = 120, verbose_name="Title_En")
    title_de = models.CharField(max_length = 120, verbose_name="Title_De")
    category = models.ForeignKey('Category', on_delete = models.CASCADE, null=True, blank=True)
    content_en = RichTextField(verbose_name="Content_En")
    content_de = RichTextField(verbose_name="Content_De")
    created_date = models.DateTimeField(auto_now_add=True, verbose_name="Created Date")
    image = models.ImageField(blank=True, null=True, verbose_name="Add Photo (.jpg .png)")
    slug = models.SlugField(unique=True, max_length = 130)

    def __str__(self):
        return self.title

我使用 url 这样的语言；

domainname.com/en/域名.com/de/

例如，如何在domainname.com/de urls中只显示属于title_de和content_de的内容？

如何使用语言进行过滤？有一个简单的解决方案吗？(我使用 django 2.1.2。我尝试 django-modeltranslation 或其他人不工作这个 django 版本...)

谢谢...

Answer 1

您可以创建一个 descriptor class包装翻译的字段，例如，

from django.utils import translation

class TranslatedField:
    def __init__(self, field_name):
         self.partial_field_name = field_name

    def __get__(self, obj, objtype):
        return getattr(obj, self.field_name)

    def __set__(self, obj, value):
        return setattr(obj, self.field_name,  value)

    @property
    def field_name(self):
        language_code = translation.get_language()
        rerurn self.partial_field_name + '_' + language_code

class Article(models.Model):

    title_en = models.CharField(max_length=120)
    title_de = models.CharField(max_length=120)
    title = Translated Field('title')

然后你可以做

article = Article.objects.create(
    title_en='In english',
    title_de='In German'
)

print(article.title)  # 'In english'
translation.set_language('de')
print(article.title)  # 'In German'
article.title = 'In German!'
print(article.title)  # 'In German!'
translation.set_language('en')
print(article.title)  # 'In english'

(未经测试，可能有错别字)

我会使用开箱即用的东西，比如 https://github.com/deschler/django-modeltranslation