Hi,
Guido explained very clearly how to do
here<http://stackoverflow.com/questions/11122846/whats-the-alternative-to-back-reference-property-in-ndb>
.
Just add a property to the Post class
@property
def comments(self):
return Comment.query(Comment.post == self.key)
-- Gianni
On Mon, Dec 31, 2012 at 2:26 AM, Toto <emays...@gmail.com> wrote:
> In my previous GAE app, I had something like a blog (Post and related
> Comment)
> Posts and Comments where 2 different models such as
>
> class Post(db.Model):
> headline = db.StringProperty(required = True)
> content = db.TextProperty(required = True)
>
> class Comment(db.Model):
> """ Comment object with many-to-one relationship """
> content = db.TextProperty(required = True)
> post = db.ReferenceProperty(Post, collection_name='comment_set')
>
> Now with db, thanks to the collection_name, I could easily find the
> comments referring to a post ( aka back reference) using post.comment_set
>
> How are now back references handled in ndb?
> Is there a preferred method?
>
> Regards
>
>
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