def to_internal_value(self, dt_str):
"""Parse an ISO 8601 datetime string and return a timestamp integer."""
if dt_str is None:
return None
dt = super(DateTimeFromTimestampField, self).to_internal_value(dt_str)
return get_timestamp_from_datetime(dt)
def datetimes_to_timestamps(validated_data):
"""Covert datetimes to timestamp integers in validated_data."""
for k, v in validated_data.items():
if type(v) is datetime:
validated_data[k] = get_timestamp_from_datetime(v)
return validated_data