Closes #3665: Enable rendering export templates via REST API

netbox/extras/models/models.py

@@ -300,13 +300,12 @@ class ExportTemplate(BigIDModel):
 
         # Build the response
         response = HttpResponse(output, content_type=mime_type)
-        filename = 'netbox_{}{}'.format(
-            queryset.model._meta.verbose_name_plural,
-            '.{}'.format(self.file_extension) if self.file_extension else ''
-        )
 
         if self.as_attachment:
-            response['Content-Disposition'] = 'attachment; filename="{}"'.format(filename)
+            basename = queryset.model._meta.verbose_name_plural.replace(' ', '_')
+            extension = f'.{self.file_extension}' if self.file_extension else ''
+            filename = f'netbox_{basename}{extension}'
+            response['Content-Disposition'] = f'attachment; filename="{filename}"'
 
         return response
 

netbox/netbox/api/views.py

@@ -5,9 +5,11 @@ from collections import OrderedDict
 from django import __version__ as DJANGO_VERSION
 from django.apps import apps
 from django.conf import settings
+from django.contrib.contenttypes.models import ContentType
 from django.core.exceptions import ObjectDoesNotExist, PermissionDenied
 from django.db import transaction
 from django.db.models import ProtectedError
+from django.shortcuts import get_object_or_404
 from django_rq.queues import get_connection
 from rest_framework import status
 from rest_framework.response import Response
@@ -16,6 +18,7 @@ from rest_framework.views import APIView
 from rest_framework.viewsets import ModelViewSet as ModelViewSet_
 from rq.worker import Worker
 
+from extras.models import ExportTemplate
 from netbox.api import BulkOperationSerializer
 from netbox.api.authentication import IsAuthenticatedOrLoginNotRequired
 from netbox.api.exceptions import SerializerNotFound
@@ -222,6 +225,18 @@ class ModelViewSet(BulkUpdateModelMixin, BulkDestroyModelMixin, ModelViewSet_):
             # Check that the instance is matched by the view's queryset
             self.queryset.get(pk=instance.pk)
 
+    def list(self, request, *args, **kwargs):
+        """
+        Overrides ListModelMixin to allow processing ExportTemplates.
+        """
+        if 'export' in request.GET:
+            content_type = ContentType.objects.get_for_model(self.serializer_class.Meta.model)
+            et = get_object_or_404(ExportTemplate, content_type=content_type, name=request.GET['export'])
+            queryset = self.filter_queryset(self.get_queryset())
+            return et.render_to_response(queryset)
+
+        return super().list(request, *args, **kwargs)
+
     def perform_create(self, serializer):
         model = self.queryset.model
         logger = logging.getLogger('netbox.api.views.ModelViewSet')