How to get result from manytomany?

[veasna bunhor]

I have two models :

class Individual(models.Model):
    name = models.CharField(max_length=200)
    is_author = models.BooleanField()
    active = models.BooleanField(default=True)
----------------------------------------------------------------------------------------------------
class Book(models.Model):
    title = models.CharField(max_length=200)
    authors = models.ManyToManyField(Individual, related_name="author_for", blank=True, null=True)
------------------------------------------------------------------------------------------------------------------

Can i make the query to get all the books that is_author?
 i have tried:
>>>authors = Individual.objects.filter(is_author=True).filter(active=True)
>>>for author in authors:
           print author.name
           for book in author.book_set.all():
                  print book.title

[Anıl KARADAĞ]

Hi,

veasna bunhor yazmış:

> I have two models :
>
> class Individual(models.Model):
> name = models.CharField(max_length=200)

> * is_author = models.BooleanField()*

> active = models.BooleanField(default=True)
> ----------------------------------------------------------------------------------------------------
> class Book(models.Model):
> title = models.CharField(max_length=200)

> *authors = models.ManyToManyField(Individual,
> related_name="author_for", blank=True, null=True)*

you used related_name for model so you should call format similar to
author.author_for.all()

Q: What is meaning of "related_name" and how we use it?
A:
http://docs.djangoproject.com/en/dev/topics/db/models/#be-careful-with-related-name

> ------------------------------------------------------------------------------------------------------------------
>
> Can i make the query to get all the books that is_author?
> i have tried:
> >>>authors = Individual.objects.filter(is_author=True).filter(active=True)
> >>>for author in authors:

> print author.name <http://author.name>

[veasna bunhor]

Thanks you very much. Now it's work.