Support multiple formats

app/app/settings.py

@@ -151,6 +151,11 @@ REST_FRAMEWORK = {
     'PAGE_SIZE': 5,
     'DEFAULT_FILTER_BACKENDS': ('django_filters.rest_framework.DjangoFilterBackend',),
     'SEARCH_PARAM': 'q',
+    'DEFAULT_RENDERER_CLASSES': (
+        'rest_framework.renderers.JSONRenderer',
+        'rest_framework.renderers.BrowsableAPIRenderer',
+        'rest_framework_xml.renderers.XMLRenderer'
+    )
 }
 
 # Internationalization

app/server/api_urls.py

@@ -1,4 +1,5 @@
 from django.urls import path
+from rest_framework.urlpatterns import format_suffix_patterns
 
 from .api import ProjectList, ProjectDetail
 from .api import LabelList, LabelDetail
@@ -25,3 +26,5 @@ urlpatterns = [
     path('projects/<int:project_id>/docs/<int:doc_id>/entities/<int:entity_id>',
          EntityDetail.as_view(), name='entity_detail'),
 ]
+
+urlpatterns = format_suffix_patterns(urlpatterns, allowed=['json', 'xml'])

requirements.txt

@@ -6,6 +6,7 @@ django-heroku==0.3.1
 django-widget-tweaks==1.4.2
 djangorestframework==3.8.2
 djangorestframework-filters==0.10.2
+djangorestframework-xml==1.4.0
 Faker==0.8.8
 flake8==3.6.0
 gunicorn==19.9.0