population density service uses now new View class

population-density/serializers.py

@@ -28,6 +28,7 @@ Center (SEDAC), Columbia University. """),
 
 # serializer classes
 
+
 class AggSerializer(BaseSerializer):
     """ see http://www.django-rest-framework.org/api-guide/serializers/#baseserializer """
 
@@ -45,23 +46,32 @@ class AggSerializer(BaseSerializer):
         except TypeError:
             vlength = 1
         if vlength > 1:
+            if obj['direction'] is None:
+                properties = OrderedDict([
+                    ('agg_function', agg_function),
+                    ('many', True),
+                    (agg_function, OrderedDict([
+                        (d, v) for d, v in zip(range(vlength), val)
+                    ])),
+                    ('units', ''),
+                    ('radius', obj['radius']),
+                ])
+            else:
                 properties = OrderedDict([
                     ('agg_function', agg_function),
                     ('many', True),
                     (agg_function, OrderedDict([
                         (d, v) for d, v in zip(obj['direction'], val)
                     ])),
-                ('units', 'km-2'),
+                    ('units', ''),
                     ('radius', obj['radius']),
                 ])
-            if obj['direction'] is None:
-                properties.pop('direction')
         else:
             properties = OrderedDict([
                 ('agg_function', agg_function),
                 ('many', False),
                 (agg_function, val),
-                ('units', 'km-2'),
+                ('units', ''),
                 ('radius', obj['radius']),
                 ('direction', obj['direction']),
             ])

population-density/views.py

@@ -7,7 +7,7 @@ from rest_framework.response import Response
 from toar_location_services.settings import DEBUG
 from .population_file_extraction import read_proxydata
 from .serializers import AggSerializer
-from utils.views_commons import get_query_params, get_agg_function
+from utils.views_commons import CommonViews
 from utils.geoutils import Directions
 from utils.extraction_tools import extract_value, extract_value_stats
 
@@ -20,13 +20,17 @@ lonvec, latvec, data, datainfo = read_proxydata(FILENAME)
 if DEBUG:
     print("File %s successfully loaded" % (FILENAME), datainfo)
 
-class PopulationView(APIView):
+
+class PopulationView(APIView, CommonViews):
+
+    def __init__(self):
+        CommonViews.__init__(self)
 
     def _extract(self, lat, lon, radius, agg, direction, by_direction):
         """perform actual extraction of desired quantity"""
         print('**by_direction:', by_direction, '** radius, agg = ', radius, agg)
         if agg is not None and radius is not None and radius > 0.:
-            agg_function = get_agg_function(agg)
+            agg_function = self.get_agg_function(agg)
             min_angle = None
             max_angle = None
             if by_direction:
@@ -56,7 +60,6 @@ class PopulationView(APIView):
         # return data, also return agg and direction as they may have been overwritten
         return result, agg, direction
 
-
     def get(self, request, format=None):
         """process GET requests for population-density app
 
@@ -79,7 +82,7 @@ class PopulationView(APIView):
         by_direction: if True, data are returned as vector with one value aggregated
             over each of 16 wind directions.
         """
-        lat, lon, radius, agg, direction, by_direction = get_query_params(request.query_params,
+        lat, lon, radius, agg, direction, by_direction = self.get_query_params(request.query_params,
                                                  ['lat', 'lon', 'radius', 'agg', 'direction', 'by_direction'])
         result, agg, direction = self._extract(lat, lon, radius, agg, direction, by_direction)