#16 - Add meta field to the json response.

resources/serializers.py

@@ -11,14 +11,23 @@
     Starship,
 )
 
+class MetaSerializer(serializers.HyperlinkedModelSerializer):
+    class Meta:
+      abstract=True
+
+    meta = serializers.SerializerMethodField()
+
+    def get_meta(self, obj):
+      return { "created": obj.created, "edited": obj.edited }
 
-class PeopleSerializer(serializers.HyperlinkedModelSerializer):
+class PeopleSerializer(MetaSerializer):
 
     homeworld = serializers.HyperlinkedRelatedField(
         read_only=True,
         view_name="planet-detail"
     )
 
+
     class Meta:
         model = People
         fields = (
@@ -38,10 +47,12 @@ class Meta:
             "created",
             "edited",
             "url",
+            "meta"
         )
 
 
-class PlanetSerializer(serializers.HyperlinkedModelSerializer):
+
+class PlanetSerializer(MetaSerializer):
 
     class Meta:
         model = Planet
@@ -59,11 +70,12 @@ class Meta:
             "films",
             "created",
             "edited",
-            "url"
+            "url",
+            "meta"
         )
 
 
-class FilmSerializer(serializers.HyperlinkedModelSerializer):
+class FilmSerializer(MetaSerializer):
 
     class Meta:
         model = Film
@@ -81,11 +93,12 @@ class Meta:
             "species",
             "created",
             "edited",
-            "url"
+            "url",
+            "meta"
         )
 
 
-class SpeciesSerializer(serializers.HyperlinkedModelSerializer):
+class SpeciesSerializer(MetaSerializer):
 
     homeworld = serializers.HyperlinkedRelatedField(
         read_only=True,
@@ -109,11 +122,12 @@ class Meta:
             "films",
             "created",
             "edited",
-            "url"
+            "url",
+            "meta"
         )
 
 
-class VehicleSerializer(serializers.HyperlinkedModelSerializer):
+class VehicleSerializer(MetaSerializer):
 
     pilots = serializers.HyperlinkedRelatedField(
         many=True,
@@ -139,11 +153,12 @@ class Meta:
             "films",
             "created",
             "edited",
-            "url"
+            "url",
+            "meta"
         )
 
 
-class StarshipSerializer(serializers.HyperlinkedModelSerializer):
+class StarshipSerializer(MetaSerializer):
 
     pilots = serializers.HyperlinkedRelatedField(
         many=True,
@@ -171,6 +186,7 @@ class Meta:
             "films",
             "created",
             "edited",
-            "url"
+            "url",
+            "meta"
         )
 

resources/tests.py

@@ -12,6 +12,9 @@
 )
 
 from .renderers import WookieeRenderer
+from datetime import datetime
+from django.utils import timezone
+
 
 import json
 
@@ -82,48 +85,99 @@ def test_species_schema(self):
         self.assertEqual(
             self.get_query("/api/species/schema").status_code, 200)
 
+    def get_timezone_aware_datetime(self, date_string):
+        return timezone.make_aware(datetime.strptime(date_string, '%Y-%m-%dT%H:%M:%S.%fZ'), timezone.get_current_timezone())
+
     def test_people_detail(self):
         response = self.get_query("/api/people/1/")
         json_data = json.loads(response.content)
         person = People.objects.get(pk=1)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(person.name, json_data["name"])
 
+    def test_people_meta_detail(self):
+        response = self.get_query("/api/people/1/")
+        json_data = json.loads(response.content)
+        person = People.objects.get(pk=1)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(person.created, self.get_timezone_aware_datetime(json_data["meta"]["created"]))
+        self.assertEqual(person.edited, self.get_timezone_aware_datetime(json_data["meta"]["edited"]))
+
     def test_planets_detail(self):
         response = self.get_query("/api/planets/1/")
         json_data = json.loads(response.content)
         planet = Planet.objects.get(pk=1)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(planet.name, json_data["name"])
 
+    def test_planet_meta_detail(self):
+        response = self.get_query("/api/planets/1/")
+        json_data = json.loads(response.content)
+        planet = Planet.objects.get(pk=1)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(planet.created, self.get_timezone_aware_datetime(json_data["meta"]["created"]))
+        self.assertEqual(planet.edited, self.get_timezone_aware_datetime(json_data["meta"]["edited"]))
+
     def test_films_detail(self):
         response = self.get_query("/api/films/1/")
         json_data = json.loads(response.content)
         film = Film.objects.get(pk=1)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(film.title, json_data["title"])
 
+    def test_film_meta_detail(self):
+        response = self.get_query("/api/films/1/")
+        json_data = json.loads(response.content)
+        film = Film.objects.get(pk=1)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(film.created, self.get_timezone_aware_datetime(json_data["meta"]["created"]))
+        self.assertEqual(film.edited, self.get_timezone_aware_datetime(json_data["meta"]["edited"]))
+
     def test_starships_detail(self):
         response = self.get_query("/api/starships/2/")
         json_data = json.loads(response.content)
         starship = Starship.objects.get(pk=2)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(starship.name, json_data["name"])
 
+    def test_starship_meta_detail(self):
+        response = self.get_query("/api/starships/2/")
+        json_data = json.loads(response.content)
+        starship = Starship.objects.get(pk=2)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(starship.created, self.get_timezone_aware_datetime(json_data["meta"]["created"]))
+        self.assertEqual(starship.edited, self.get_timezone_aware_datetime(json_data["meta"]["edited"]))
+
     def test_vehicles_detail(self):
         response = self.get_query("/api/vehicles/4/")
         json_data = json.loads(response.content)
         vehicle = Vehicle.objects.get(pk=4)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(vehicle.name, json_data["name"])
 
+    def test_vehicle_meta_detail(self):
+        response = self.get_query("/api/vehicles/4/")
+        json_data = json.loads(response.content)
+        vehicle = Vehicle.objects.get(pk=4)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(vehicle.created, self.get_timezone_aware_datetime(json_data["meta"]["created"]))
+        self.assertEqual(vehicle.edited, self.get_timezone_aware_datetime(json_data["meta"]["edited"]))
+
     def test_species_detail(self):
         response = self.get_query("/api/species/1/")
         json_data = json.loads(response.content)
         specie = Species.objects.get(pk=1)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(specie.name, json_data["name"])
 
+    def test_species_meta_detail(self):
+        response = self.get_query("/api/species/1/")
+        json_data = json.loads(response.content)
+        species = Species.objects.get(pk=1)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(species.created, self.get_timezone_aware_datetime(json_data["meta"]["created"]))
+        self.assertEqual(species.edited, self.get_timezone_aware_datetime(json_data["meta"]["edited"]))
+
     def test_etag(self):
         valid_etag = self.get_query("/api/")["ETag"]
         self.client.defaults['HTTP_IF_NONE_MATCH'] = valid_etag
@@ -147,3 +201,4 @@ def test_wookie_format(self):
             wr.translate_to_wookie(specie.name),
             json_data[wr.translate_to_wookie("name")]
         )
+