Question

我的模特是：

Result search(T something,Set<T> someSet);

为了得到我想要的东西，我会在下面查询一个原始的SQL查询：

class Profiles(models.Model):
    first_name = models.CharField()
    last_name = models.CharField()
    email = models.CharField()

    class Meta:
        db_table = 'users'

class Products(models.Model):
    title = models.CharField()
    content = models.CharField()
    price = models.BigIntegerField()
    user = models.ForeignKey(Profiles, related_name="product_owner") # user_id

    class Meta:
        db_table = 'products'

class UserFollows(models.Model):
    profile   = models.ForeignKey(Profiles, related_name='profile_following') # profile_id
    following = models.ForeignKey(Profiles, related_name='profile_is_following') # following_id

    class Meta:
        db_table = 'user_follows'

但是我需要用Django ORM来做。我可以加入＆＃39;用户＆＃39;和＆＃39;产品＆＃39;使用select_related的表但我不知道如何加入＆＃39; user_follows＆＃39;。我需要在＆＃39; user_follows＆＃39;的字段上应用过滤器。表。请帮忙！

如何使用Django ORM加入三个表？

0 个答案: