def all_newest(cls):
ids = [s.sensor_id for s in Sensor.all()]
ret = []
for i in ids:
s = SensorData.query(SensorData.sensor_id == i).order(-SensorData.added).fetch(1)
if s:
ret.append(s[0])
return ret
def get(self):
res = Sensor.all()
# write response
self.response.content_type = "application/json"
self.response.write(jsonify([x.json() for x in res]))
def all_newest_both(cls):
ids = Sensor.all()
return [(i, SensorData.query(SensorData.sensor_id == i.sensor_id).order(-SensorData.added).fetch(1)[0]) for i in
ids]