serve basic list/detail pi log simulation views

dr_botzo/urls.py

@@ -18,6 +18,7 @@ urlpatterns = [
     url(r'^itemsets/', include('facts.urls')),
     url(r'^karma/', include('karma.urls')),
     url(r'^markov/', include('markov.urls')),
+    url(r'^pi/', include('pi.urls')),
     url(r'^races/', include('races.urls')),
     url(r'^weather/', include('weather.urls')),
 

pi/models.py

@@ -59,6 +59,8 @@ class PiLog(models.Model):
     @property
     def value(self):
         """Return this log entry's estimated value of pi."""
+        if self.total_count == 0:
+            return 0.0
         return 4.0 * int(self.total_count_inside) / int(self.total_count)
 
     @property

pi/serializers.py

@@ -0,0 +1,14 @@
+"""REST serializers for pi simulations."""
+from rest_framework import serializers
+
+from pi.models import PiLog
+
+
+class PiLogSerializer(serializers.ModelSerializer):
+    """Pi simulation log entry serializer for the REST API."""
+
+    class Meta:
+        """Meta options."""
+
+        model = PiLog
+        fields = ('id', 'simulation_x', 'simulation_y', 'total_count', 'total_count_inside', 'value', 'hit')

pi/urls.py

@@ -0,0 +1,12 @@
+"""URL patterns for the pi views."""
+from django.conf.urls import include, url
+from rest_framework.routers import DefaultRouter
+
+from pi.views import PiLogViewSet
+
+router = DefaultRouter()
+router.register(r'simulations', PiLogViewSet)
+
+urlpatterns = [
+    url(r'^api/', include(router.urls)),
+]

pi/views.py

@@ -0,0 +1,12 @@
+"""Provide pi simulation results."""
+from rest_framework import viewsets
+
+from pi.models import PiLog
+from pi.serializers import PiLogSerializer
+
+
+class PiLogViewSet(viewsets.ReadOnlyModelViewSet):
+    """Provide list and detail actions for pi simulation log entries."""
+
+    queryset = PiLog.objects.all()
+    serializer_class = PiLogSerializer