On Tuesday, March 20, 2012 2:26:20 PM UTC-7, Mike wrote:
>
> I am trying to use the filter() method based on a key argument. For
> example:
>
> user_key="agxkZXZ-emFiZXRhLTJyCgsSBFVzZXIYGAw"
> d=datamodel.Task.all()
> d.filter("user=",user_key)
> results=d.fetch(1024)
> This produces zero results, and its probably because the key isn't in
> the right format. If this where gql would I have to use the Key()
> function like this:
>
> db.gqlQuery("select * from Task where user=Key(:1)",user_key)
> However I don't think I can use the Key() function within a filter,
> but there must be some python functional equivalent... Is there a way
> to properly format a key to be used within the filter() method?
>
> User is defined as:
> user = db.ReferenceProperty(None)
You have to wrap user_key in a call to db.Key(), e.g.
d.filter("user =", db.Key(user_key) )
The user_key value you have is a string but the datastore contains a Key
object, which is a structured thing that will never match any string.
--Guido van Rossum
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