Error when trying to retrieve a single entity
问题 I've been playing around with Google Cloud Endpoints for the past few days (aiming to hook it up with AngularJS) and I ran into a bit of trouble when I try to retrieve a single entity from my datastore. My ndb model setup is: class Ingredients(EndpointsModel): ingredient = ndb.StringProperty() class Recipe(EndpointsModel): title = ndb.StringProperty(required=True) description = ndb.StringProperty(required=True) ingredients = ndb.StructuredProperty(Ingredients, repeated=True) instructions =