HI,
One more question
How do i update a manytomany field which is a self referential field ie
it points to the same table.
Consider for example facebooksession contains a field called friends
friends =
models.ManyToManyField("self",db_column='uid',blank=True,null=True)
On Sun, Mar 18, 2012 at 4:08 PM, dummyman dummyman <tempo...@gmail.com>wrote:
> thnk u very much i got it :)
>
>
> On Sun, Mar 18, 2012 at 3:57 PM, Ian Lewis <ianmle...@gmail.com> wrote:
>
>> Hi,
>>
>> facebook_session.books_name is a RelatedManager on the Books model class.
>>
>> You need to add books to the list with the add() method.
>>
>> book = Books(book_name="name", book_category="category")
>> book.save()
>> facebook_session.books_name.add(book)
>>
>> See:
>>
>> https://docs.djangoproject.com/en/1.3/ref/models/relations/#django.db.models.fields.related.RelatedManager.add
>>
>> On Sun, Mar 18, 2012 at 4:41 PM, dummyman dummyman <tempo...@gmail.com>
>> wrote:
>> > Hi
>> >
>> > I ve to models
>> >
>> > class FacebookSession(models.Model):
>> >
>> > access_token = models.CharField(max_length = 250,unique=True)
>> > expires = models.IntegerField(null=True)
>> >
>> > user = models.ForeignKey(User, null=True)
>> > uid = models.BigIntegerField(unique=True, null=True)
>> >
>> > birthday = models.DateField(blank=True,null=True)
>> > name = models.CharField(max_length=100,blank=True,null=True)
>> >
>> > books_name = models.ManyToManyField(Books,blank=True,null=True)
>> >
>> >
>> > lass Books(models.Model):
>> >
>> > book_name = models.CharField(max_length=100)
>> > book_category =
>> models.CharField(max_length=100,blank=True,null=True)
>> >
>> > def __unicode__(self):
>> > return self.book_name
>> >
>> >
>> >
>> > now i want to have a list of books in a list called books_list
>> >
>> > How to store those in the database
>> >
>> > I understood how to store basic_fields
>> >
>> >
>> > database_obj = FacebookSession.objects.get(uid=123444)
>> > database_obj.name="ss"
>> >
>> > database_obj.save()
>> >
>> > How do i do the same thing for books_name which is a many to many field
>> in
>> > FacebookSession class
>> >
>> > --
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>>
>>
>>
>> --
>> Ian
>>
>> http://www.ianlewis.org/
>>
>> --
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>>
>
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