[Fixes #13694] Register the metadata endpoint under the api/v2 index (#13703)

* register metadata base url to api/v2

Author: Gpetrak

geonode/metadata/api/urls.py

@@ -17,7 +17,8 @@
 #
 #########################################################################
 from django.urls import path
-from rest_framework import routers
+
+from geonode.api.urls import router
 
 from geonode.metadata.api import views
 from geonode.metadata.api.views import (
@@ -28,8 +29,7 @@
     MetadataGroupAutocomplete,
 )
 
-router = routers.DefaultRouter()
-router.register(r"metadata", views.MetadataViewSet, basename="metadata")
+router.register(r"metadata", views.MetadataViewSet, "metadata")
 
 urlpatterns = router.urls + [
     path(

geonode/metadata/api/views.py

@@ -53,8 +53,14 @@ class MetadataViewSet(ViewSet):
 
     queryset = ResourceBase.objects.all()
 
-    def list(self, request):
-        pass
+    def list(self, request, *args, **kwargs):
+        base = request.build_absolute_uri("").rstrip("/")
+        return Response(
+            {
+                "schema": f"{base}/schema/",
+                "instance": f"{base}/instance/<pk>/",
+            }
+        )
 
     # Get the JSON schema
     # A pk argument is set for futured multiple schemas

geonode/urls.py

@@ -134,7 +134,7 @@
     re_path(r"^api/v2/", include("geonode.facets.urls")),
     re_path(r"^api/v2/", include("geonode.assets.urls")),
     # metadata views
-    re_path(r"^api/v2/", include("geonode.metadata.urls")),
+    re_path(r"^api/v2/", include("geonode.metadata.api.urls")),
     re_path(r"", include(api.urls)),
     re_path(
         r"uploads/upload",