I would do this via intermediate model,
class Author(models.Model):
name = models.CharField(max_length=250)
class Book(models.Model):
title = models.CharField(max_length=250)
author = models.ManyToManyField(Author, through="BookAuthor")
class BookAuthor(models.Model):
author = models.ForeignKey(Author)
book = models.ForeignKey(Book)
def filter_books(request):
book_list = Book.objects.filter(...)
BookAuthor.objects.filter(book__in=book_list).values('author').annotate(books_num=models.Count('author'))
You'll get a list of dicts with authors' PKs and book_num int.
On Sun, May 8, 2011 at 4:37 PM, Владислав Максимов
<maksymov.v...@gmail.com>wrote:
> Hi! Short question. I have two models:
>
> class Author(models.Model):
> name = models.CharField(max_length=250)
>
> class Book(models.Model):
> title = models.CharField(max_length=250)
> author = models.ManyToManyField(Author)
>
> One view:
>
> def filter_books(request):
> book_list = Book.objects.filter(...)
>
> How can I display in template next content:
>
> Authors in selected books:
> Author1: book_count
> Author2: book_count
> ...
>
>
> http://stackoverflow.com/q/5927251/604789
>
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