models.py 文件源码

def update_data(self):
        params = {'origin': self.start,
                  'destination': self.dest,
                  'mode': self.mode,
                  'key': settings.GOOGLE_MAPS_API_KEY}
        r = requests.get(settings.GOOGLE_MAPS_BASE_URL, params=params)
        routes = r.json().get('routes')
        all_routes = []
        for route in routes:
            duration = sum(leg['duration']['value'] for leg in route['legs']) // 60
            all_routes.append({'trajectory_name': route['summary'],
                               'trip_duration': duration})
        if all_routes:
            all_routes.sort(key=lambda route: route['trip_duration'])
            best_route = all_routes.pop(0)
            self.trajectory_name = best_route['trajectory_name']
            self.trip_duration = best_route['trip_duration']
            self.save()
        else:
            raise ExternalDataError('No route found')