Question

I have two models:

class Video(models.Model):
    slug = models.SlugField(blank=True, default='', db_index=True, unique=True)


class VideoTranslation(models.Model):
    video = models.ForeignKey(Video, related_name='translations')
    language = models.CharField(max_length=3, choices=settings.LANGUAGES)
    name = models.CharField(max_length=255, db_index=True)

Video contains some infromation about video, Video translation contains translated names of these videos.

I want to get itmes from Video model in one of languages.

It is possible by sql query like this:

SELECT * FROM video_video IN join video_videotranslation ON video_video.id = video_videotranslation.video_id where video_videotranslation.language="en" ORDER BY video_videotranslation.name;

but I really want to avoid raw sql queries.

Is it possible to make this kind of query rellying only on Django ORM?

Answer 1

Absolutely, it will look like:

Video.objects.filter(translations__language='en').order_by('translations__name')

See lookups that span relationships for the syntax, and the documentation of order_by.