Adding custom JSON resource for Restful Api.

Author: pykler

mainapp/models.py

@@ -16,6 +16,7 @@
 from contrib.stdimage import StdImageField
 import libxml2
 from django.utils.encoding import iri_to_uri
+from contrib.django_restapi.model_resource import Collection
 
 
 class Province(models.Model):
@@ -297,7 +298,19 @@ def __unicode__(self):
         "The string representation is the JavaScript API call."
         return mark_safe('GMarker(%s)' % ( self.js_params))
 
-    
+
+class ReportJSON(Collection):
+
+    def read(self, request):
+        lon = request.GET["lon"]
+        lat = request.GET["lat"]
+        radius = int(request.GET.get('r', 4))
+        point_str = "POINT(%s %s)" %(lon, lat)
+        pnt = fromstr(point_str, srid=4326)
+        reports = Report.objects.filter(is_confirmed = True,point__distance_lte=(pnt,D(km=radius))).distance(pnt).order_by('distance')
+        return self.responder.list(request, reports)
+
+
 class FixMyStreetMap(GoogleMap):  
     """
         Overrides the GoogleMap class that comes with GeoDjango.  Optionally,
@@ -579,4 +592,4 @@ class PollingStation(models.Model):
 
     class Meta:
         db_table = u'polling_stations'
- 
+

urls.py

@@ -3,6 +3,11 @@
 from django.http import HttpResponseRedirect
 from django.contrib import admin
 from mainapp.feeds import LatestReports, LatestReportsByCity, LatestReportsByWard, LatestUpdatesByReport
+from contrib.django_restapi.responder import JSONResponder
+
+# models
+from mainapp.models import Report, ReportJSON
+
 
 feeds = {
     'reports': LatestReports,
@@ -80,24 +85,16 @@
 )
 
 # REST
-json_report_resource = Collection(
-    queryset = Report.objects.all(),
+json_report_resource = ReportJSON(
+    queryset=Report.objects.all(),
     permitted_methods = ('GET', 'POST'),
 #     expose_fields = ('id','point'),
     responder = JSONResponder()
 #     responder = JSONResponder(paginate_by = 2)
 )
 
-json_reportupdate_resource = Collection(
-    queryset = ReportUpdate.objects.all(),
-    permitted_methods = ('GET', 'POST'),
-    responder = JSONResponder()
-    #responder = JSONResponder(paginate_by = 10)
-)
-
 urlpatterns += patterns('',
-   url(r'^json/report/(.*?)/?$', json_report_resource),
-   url(r'^json/reportupdate/(.*?)/?$', json_reportupdate_resource),
+   url(r'^json/report/?$', json_report_resource),
 )