Add result_set to ballot serializer

ynr/apps/api/tests/test_api_next.py

@@ -11,6 +11,7 @@
 from parties.tests.fixtures import DefaultPartyFixtures
 from people.models import PersonImage
 from people.tests.factories import PersonFactory
+from uk_results.models import ResultSet
 
 
 class TestAPI(
@@ -287,3 +288,42 @@ def test_sopn_on_ballot(self):
                 "source_url": "",
             },
         )
+
+    def test_no_results_on_ballot(self):
+        response = self.app.get(
+            "/api/next/ballots/{}/".format(
+                self.edinburgh_east_post_ballot.ballot_paper_id
+            )
+        )
+        result = response.json
+        self.assertEqual(
+            result["results"],
+            None,
+        )
+
+    def test_results_on_ballot(self):
+        ResultSet.objects.create(
+            ballot=self.edinburgh_east_post_ballot,
+            created="2015-05-08T00:00:00Z",
+            modified="2015-05-08T00:00:00Z",
+            source="Example ResultSet for testing",
+            num_spoilt_ballots=100,
+            num_turnout_reported=900,
+            total_electorate=1000,
+        )
+        response = self.app.get(
+            "/api/next/ballots/{}/".format(
+                self.edinburgh_east_post_ballot.ballot_paper_id
+            )
+        )
+        result = response.json
+        self.assertEqual(
+            result["results"],
+            {
+                "num_turnout_reported": 900,
+                "turnout_percentage": 90.0,
+                "num_spoilt_ballots": 100,
+                "source": "Example ResultSet for testing",
+                "total_electorate": 1000,
+            },
+        )

ynr/apps/elections/api/next/serializers.py

@@ -9,6 +9,7 @@
     MinimalPostSerializer,
 )
 from rest_framework import serializers
+from uk_results.api.next.serializers import MinimalResultSerializer
 
 
 class MinimalElectionSerializer(serializers.HyperlinkedModelSerializer):
@@ -102,6 +103,7 @@ class Meta:
             "replaces",
             "replaced_by",
             "uncontested",
+            "results",
         )
 
     replaces = serializers.SlugRelatedField(
@@ -126,6 +128,7 @@ class Meta:
     post = MinimalPostSerializer(read_only=True)
     sopn = serializers.SerializerMethodField()
     candidacies = serializers.SerializerMethodField()
+    results = MinimalResultSerializer(read_only=True, source="resultset")
 
     results_url = serializers.HyperlinkedIdentityField(
         view_name="resultset-detail",

ynr/apps/uk_results/api/next/serializers.py

@@ -68,6 +68,18 @@ def get_url(self, obj):
     candidate_results = CandidateResultSerializer(many=True)
 
 
+class MinimalResultSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ResultSet
+        fields = (
+            "num_turnout_reported",
+            "turnout_percentage",
+            "num_spoilt_ballots",
+            "source",
+            "total_electorate",
+        )
+
+
 class ElectedSerializer(CandidacyOnBallotSerializer):
     class Meta:
         model = Membership