使用Django通过default（）将用户语言保存在模型中

Question

I would like to save the language of the user each time a new model instance is created:

models.py:

def getlanguage(request):
    lang = request.LANGUAGE_CODE
    return lang


class Comment(models.Model):
    language = models.CharField(max_length=100, blank=True, default=getlanguage)

Django generates the following error: TypeError: getlanguage() takes exactly 1 argument (0 given)

How to pass the request to the function?

Thank you!

Answer 1

Your save method needs to be overridden like this.

class Comment(models.Model):
    language = models.CharField(max_length=100, blank=True, default='')

    def save(self, *args, **kwargs):
        default_language = kwargs.pop('default_language', None)
        if not self.language and default_language is not None:
            self.language = default_language
        super(Comment, self).save(*args, **kwargs)

And you can pass the parameter when save() is called on an object in the views

comment = Comment()
comment.save(default_language=request.LANGUAGE_CODE)