I have these models:
class Country(db.Model):
name = db.StringProperty()
code = db.StringProperty()
class Course(db.Model):
name = db.StringProperty()
description = db.StringProperty()
country = db.ReferenceProperty(Country, collection_name='courses')
class Application():
status = db.StringProperty()
course = db.ReferenceProperty(Course, collection_name='applications')
One country has many courses, and one course has many applications. So how can I get a query with all the applications from a country? Is it even possible?
The GAE datastore is not a relational model. You cannot do joins. You would need to iterate through each course to get its applications.