CODEWITHSUNDEEP
pythongoogle-app-enginegoogle-cloud-datastoregql
rook
rook

Reputation: 67039

How do I apply a filter to a google datastore collection based on a key?

I am trying to use the filter() method based on a key argument. For example:

user_id="agxkZXZ-emFiZXRhLTJyCgsSBFVzZXIYGAw"
d=datamodel.Task.all()
d.filter("user=",user_id) 
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_id)

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?

Upvotes: 0

Views: 139

Answers (1)

tdavis
tdavis

Reputation: 1472

You can indeed use Key instances within a filter!

from google.appengine.api.datastore_types import Key

user_id="agxkZXZ-emFiZXRhLTJyCgsSBFVzZXIYGAw"
datamodel.Task.all().filter('user', Key(user_id))

Upvotes: 4

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