adds api for articles

apps/core/routers.py

+from rest_framework import routers
+
+
+class DefaultRouter(routers.DefaultRouter):
+    """
+    Extends `DefaultRouter` class to add a method for extending url
+    routes from another router.  # from
+    http://stackoverflow.com/questions/31483282/django-rest-framework-combining-routers-from-different-apps
+    """
+
+    def extend(self, router):
+        """
+        Extend the routes with url routes of the passed in router.
+        Args:
+             router: SimpleRouter instance containing route definitions.
+        """
+        self.registry.extend(router.registry)

apps/rp/api/serializers.py

+from rest_framework import serializers
+
+from rp.models import Article
+
+
+class ArticleSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Article
+        fields = "__all__"

apps/rp/api/urls.py

+from rest_framework import routers
+from .views import ArticleViewSet
+router = routers.DefaultRouter()
+
+router.register(r"articles", ArticleViewSet)

apps/rp/api/views.py

+from rest_framework import viewsets
+
+from rp.models import Article
+from .serializers import ArticleSerializer
+
+
+class ArticleViewSet(viewsets.ModelViewSet):
+    queryset = Article.objects.all()
+    serializer_class = ArticleSerializer

project/urls.py

@@ -5,7 +5,15 @@ rp_new URL Configuration
 from django.conf.urls import url, include
 from django.contrib import admin
 
+# Django rest framework router
+from core.routers import DefaultRouter
+from rp.api.urls import router as rp_router
+
+router = DefaultRouter()
+router.extend(rp_router)
+
 urlpatterns = [
     url(r"^admin/", admin.site.urls),
+    url(r"^api/", include(router.urls, namespace="api")),
     url(r"^rp/", include("rp.urls"))
 ]