如何解决 2 个级别的 Django ManyToMany 关系

Question

I have a structure like this in Django 1.11:

class Profile(models.Model):
    username = models.CharField()

class Post(models.Model):
    profile = models.ForeignKey(Profile)
    hashtag = models.ManyToManyField(Hashtag)

class Hashtag(models.Model):
    name = models.CharField()

Now this creates intermediate table post_hashtag, but how can I access all hashtags using profile.hashtags.all() ?

Answer 1

You can obtain these through a filter, like:

Hashtag.objects.filter()

so if you want to add that as a property in your Profile class for example, you can implement this as:

class Profile(models.Model):
    username = models.CharField()

    @property
    def (self):
        return Hashtag.objects.filter()