def serialize(self, o, **kwargs):
if not isinstance(o, Track):
raise TypeError('Object should be of type {}, is {}'.format(type(Track), type(o)))
a = Activity()
a.date = o.created_at
a.elapsed = o.elapsed_time()
a.moving = o.moving_time()
a.total_distance = o.total_distance()
a.elevation_gain = o.elevation_gain()
a.speed_avg = o.average_speed()
a.speed_max = o.max_speed()
a.hr_avg = o.average_heart_rate()
a.hr_max = o.max_heart_rate()
a.zones_elevation = o.elevation_zones()
a.zones_speed = o.speed_zones()
a.zones_hr = o.heart_rate_zones()
a.zones_grade = o.grade_zones()
a.track = LineString(o.track())
a.time = o.time_entries()
a.distance = o.distance_entries()
hr = o.heart_rate_entries()
a.heart_rate = [e if e else -1 for e in hr] if hr else None
cad = o.cadence_entries()
a.cadence = [e if e else -1 for e in cad] if cad else None
temp = o.temperature_entries()
a.temperature = [e if e else -1 for e in temp] if temp else None
# User, activity type, objectives, etc.
for key, value in kwargs.iteritems():
if key not in ['user', 'sport', 'description', 'comments', 'equipment', 'primary_objective',
'secondary_objective', 'rating']:
continue
setattr(a, key, value)
return a
