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Asked: 2026-05-11T05:41:56+00:00

I have the following models: class Author(models.Model): author_name = models.CharField() class Book(models.Model): book_name =

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I have the following models:

class Author(models.Model):   author_name = models.CharField()  class Book(models.Model):   book_name = models.CharField()  class AuthorBook(models.Model):   author_id = models.ForeignKeyField(Author)   book_id = models.ForeignKeyField(Book)

With that being said, I’m trying to emulate this query using the Django ORM (select all of the books written by a specific author, noting that Authors can have many books and Books can have many Authors):

SELECT book_name  FROM authorbook, book WHERE authorbook.author_id = 1 AND authorbook.book_id = book.id

I’ve read this FAQ page on the Django website, but before I modify my model structure and remove AuthorBook, I was curious if I could emulate that query using the current structure.

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1 Answer

  1. You should be able to do:

    books = Book.objects.filter(authorbook__author_id=1)

    to get a QuerySet of Book objects matching your author_id restriction.

    The nice thing about Django is you can cook this up and play around with it in the shell. You may also find http://docs.djangoproject.com/en/dev/topics/db/queries/#spanning-multi-valued-relationships to be useful.

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