Hi! I have many models:
class Parent (db.Model) : data = db.StringProperty() class Child1 (db.Model) : parent = db.ReferenceProperty(Parent) childData = db.StringProperty() class Child2 (db.Model) : parent = db.ReferenceProperty(Parent) childData2 = db.StringProperty() class Child3 (db.Model) : parent = db.ReferenceProperty(Parent) childData3 = db.StringProperty() .... I want a query which can give me a list of all parents which do not have a child yet. How do i do it? I do not want to maintain an identifier in the Parent model for each of the children as I want to add new child models very often. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
