Merge pull request #229 from edx/nickersoft/last-edited-api

Added last edited date to courses API

ecommerce/extensions/api/serializers.py

@@ -114,6 +114,10 @@ class RefundSerializer(serializers.ModelSerializer):
 
 class CourseSerializer(serializers.HyperlinkedModelSerializer):
     products_url = serializers.SerializerMethodField()
+    last_edited = serializers.SerializerMethodField()
+
+    def get_last_edited(self, obj):
+        return obj.history.latest().history_date.strftime(ISO_8601_FORMAT)
 
     def get_products_url(self, obj):
         return reverse('api:v2:course-product-list', kwargs={'parent_lookup_course_id': obj.id},
@@ -121,7 +125,7 @@ class CourseSerializer(serializers.HyperlinkedModelSerializer):
 
     class Meta(object):
         model = Course
-        fields = ('id', 'url', 'name', 'type', 'products_url',)
+        fields = ('id', 'url', 'name', 'type', 'products_url', 'last_edited')
         read_only_fields = ('type',)
         extra_kwargs = {
             'url': {'view_name': COURSE_DETAIL_VIEW}

ecommerce/extensions/api/v2/tests/views/test_courses.py

@@ -7,6 +7,7 @@ import mock
 from oscar.core.loading import get_model, get_class
 from waffle import Switch
 
+from ecommerce.core.constants import ISO_8601_FORMAT
 from ecommerce.courses.models import Course
 from ecommerce.courses.publishers import LMSPublisher
 from ecommerce.extensions.api.v2.tests.views import JSON_CONTENT_TYPE, TestServerUrlMixin
@@ -35,12 +36,16 @@ class CourseViewSetTests(TestServerUrlMixin, CourseCatalogTestMixin, UserMixin,
         """ Serializes a course to a Python dict. """
         products_url = self.get_full_url(reverse('api:v2:course-product-list',
                                                  kwargs={'parent_lookup_course_id': course.id}))
+
+        last_edited = course.history.latest().history_date.strftime(ISO_8601_FORMAT)
+
         return {
             'id': course.id,
             'name': course.name,
             'type': course.type,
             'url': self.get_full_url(reverse('api:v2:course-detail', kwargs={'pk': course.id})),
             'products_url': products_url,
+            'last_edited': last_edited
         }
 
     def test_list(self):