Hi,
In my app I have a content generator (writer) and content consumer (reader).
A reader can subscribe to any writer. The way its done so far is,
Writer(db.Model):
name = db.StringProperty()
:
:
Reader(db.Model):
name = db.StringProperty()
subscribed_to = db.ListProperty(db.Key) # here I go on appending
writer.key() every time reader subscribes to writer's content
:
:
Content(db.Model):
title = db.StringProperty()
owner = db.ReferenceProperty(Writer, collection_name = "content")
rank = db.IntgerProperty() # Some rank to story to order them while
fetching.
:
:
I can get content for a reader to read by,
content = db.GqlQuery("SELECT * FROM Content WHERE user IN :1 ORDER BY rank
DESC ", reader.subscribed_to) # pseudo code... sorry for any typos.
This approach works great as long as reader doesn't have more than 30
writers in subscribed_to list (because of IN there) . Any thoughts on how
make it scale up so that reader is free to subscribe to any number of
writers and still be able to sort the query by 'rank' ?
Thanks,
Harshal
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