How to build this query

[Moises Belchin]

Hi guys,

I want to query by a repeated property, Is there any way to build this kind of queries ??

ie:

class Orders(ndb.Model):

  clients = ndb.KeyProperty(indexed=True, default=None, repeated=True)

q = Orders.query(Orders.country == ndb.Key('Countries', 'US'),

                          Orders.clients == [])

Regards.

Moisés Belchín.

[Kaan Soral]

you can do

q = Orders.query(Orders.country == ndb.Key('Countries', 'US'),

                          Orders.clients == 'client_id_etc')

but you can't query for non-existent things

you may add a seperate no_clients BooleanProperty etc and set it to True

so the answer to your question is, you can treat repeated properties as regular properties inside queries

if you read the docs, they explain these pretty well

[Moises Belchin]

First of all, thanks for your answer.

In NDB you can query for non-existing things, ie: Orders.query(Orders.pending == None).fetch()

Just as you can query for None, I would ask for empty list.

I know you can create a ComputedProperty and query by this new property but I don't want to do this when the information, that I'm querying, is in my Repeated property.

My question is if there is any way to query by empty list.

Thanks again for comments.

Regards.

Saludos.

Moisés Belchín.

2012/11/27 Kaan Soral <kaan...@gmail.com>

--
You received this message because you are subscribed to the Google Groups "Google App Engine" group.
To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/pRXDQTjOxqgJ.
To post to this group, send email to google-a...@googlegroups.com.
To unsubscribe from this group, send email to google-appengi...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.