def post(self, request, location_id):
"""
Adds a measurement. Returns created and serialised measurement.
Parameter
---------
request : rest_framework.request.Request
Object representing the request.
location_id : int
Identifies the location in the database.
Returns
-------
rest_framework.reponse.Response
Contains the serialised measurement or an error message.
"""
user = request.user
data = request.data
try:
location = AirQualityLocation.objects.get(pk=location_id)
except AirQualityLocation.DoesNotExist:
return Response(
{'error': 'Location not found.'},
status=status.HTTP_404_NOT_FOUND
)
if request.user != location.creator:
return Response(
{'error': 'You have no rights to add a new measurement.'},
status=status.HTTP_403_FORBIDDEN
)
serializer = MeasurementSerializer(
data=data, context={
'user': user,
'location': location,
'data': data
}
)
if serializer.is_valid(raise_exception=True):
serializer.save()
data = serializer.data
instance = serializer.instance
if self.submit_measurement(request, data, instance):
return Response(status=status.HTTP_204_NO_CONTENT)
return Response(serializer.data, status=status.HTTP_201_CREATED)
def patch(self, request, location_id, measurement_id):
"""
Updates a single measurement created by the user.
Parameters
----------
request : rest_framework.request.Request
Represents the request.
location_id : int
Identifies the location in the database.
measurement_id : int
Identifies the measurement in the database.
Returns
-------
rest_framework.response.Response
Contains the serialised measurement or an error message.
"""
user = request.user
data = request.data
try:
measurement = AirQualityMeasurement.objects.get(pk=measurement_id)
except AirQualityMeasurement.DoesNotExist:
return Response(
{'error': 'Measurement not found.'},
status=status.HTTP_404_NOT_FOUND
)
if user != measurement.creator:
return Response(
{'error': 'You have no rights to update this measurement.'},
status=status.HTTP_403_FORBIDDEN
)
serializer = MeasurementSerializer(
measurement, data=data, context={'user': user, 'data': data}
)
if serializer.is_valid(raise_exception=True):
serializer.save()
data = serializer.data
instance = serializer.instance
if self.submit_measurement(request, data, instance):
return Response(status=status.HTTP_204_NO_CONTENT)
return Response(data, status=status.HTTP_200_OK)