Add path based versioning

app/app/urls.py

@@ -14,10 +14,9 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.contrib import admin
-from django.urls import path, include
+from django.urls import path, include, re_path
 from django.contrib.auth.views import PasswordResetView, LogoutView
 from server.views import LoginView
-from server.urls import router
 
 
 urlpatterns = [
@@ -28,6 +27,5 @@ urlpatterns = [
     path('logout/', LogoutView.as_view(), name='logout'),
     path('password_reset/', PasswordResetView.as_view(), name='password_reset'),
     path('api-auth/', include('rest_framework.urls')),
-    path('api/', include(router.urls)),
-
+    re_path(r'^(?P<version>(v1))/', include('server.api_urls')),
 ]

app/server/api_urls.py

@@ -0,0 +1,27 @@
+from django.urls import path
+
+from .api import ProjectList, ProjectDetail
+from .api import LabelList, LabelDetail
+from .api import DocumentList, DocumentDetail
+from .api import EntityList, EntityDetail
+from .api import StatisticsAPI
+
+
+urlpatterns = [
+    path('projects', ProjectList.as_view(), name='project_list'),
+    path('projects/<int:project_id>', ProjectDetail.as_view(), name='project_detail'),
+    path('projects/<int:project_id>/statistics',
+         StatisticsAPI.as_view(), name='statistics'),
+    path('projects/<int:project_id>/labels',
+         LabelList.as_view(), name='label_list'),
+    path('projects/<int:project_id>/labels/<int:label_id>',
+         LabelDetail.as_view(), name='label_detail'),
+    path('projects/<int:project_id>/docs',
+         DocumentList.as_view(), name='doc_list'),
+    path('projects/<int:project_id>/docs/<int:doc_id>',
+         DocumentDetail.as_view(), name='doc_detail'),
+    path('projects/<int:project_id>/docs/<int:doc_id>/entities',
+         EntityList.as_view(), name='entity_list'),
+    path('projects/<int:project_id>/docs/<int:doc_id>/entities/<int:entity_id>',
+         EntityDetail.as_view(), name='entity_detail'),
+]

app/server/urls.py

@@ -1,37 +1,13 @@
 from django.urls import path
-from rest_framework import routers
 
 from .views import IndexView
 from .views import ProjectView, DatasetView, DataUpload, LabelView, StatsView, GuidelineView
 from .views import ProjectsView, DataDownload, DataDownloadFile
 from .views import DemoTextClassification, DemoNamedEntityRecognition, DemoTranslation
-from .api import ProjectList, ProjectDetail
-from .api import LabelList, LabelDetail
-from .api import DocumentList, DocumentDetail
-from .api import EntityList, EntityDetail
-from .api import StatisticsAPI
-
-router = routers.DefaultRouter()
 
 
 urlpatterns = [
     path('', IndexView.as_view(), name='index'),
-    path('api/projects/', ProjectList.as_view(), name='project_list'),
-    path('api/projects/<int:project_id>', ProjectDetail.as_view(), name='project_detail'),
-    path('api/projects/<int:project_id>/statistics/',
-         StatisticsAPI.as_view(), name='statistics'),
-    path('api/projects/<int:project_id>/labels/',
-         LabelList.as_view(), name='label_list'),
-    path('api/projects/<int:project_id>/labels/<int:label_id>/',
-         LabelDetail.as_view(), name='label_detail'),
-    path('api/projects/<int:project_id>/docs/',
-         DocumentList.as_view(), name='doc_list'),
-    path('api/projects/<int:project_id>/docs/<int:doc_id>/',
-         DocumentDetail.as_view(), name='doc_detail'),
-    path('api/projects/<int:project_id>/docs/<int:doc_id>/entities',
-         EntityList.as_view(), name='entity_list'),
-    path('api/projects/<int:project_id>/docs/<int:doc_id>/entities/<int:entity_id>/',
-         EntityDetail.as_view(), name='entity_detail'),
     path('projects/', ProjectsView.as_view(), name='projects'),
     path('projects/<int:project_id>/download',
          DataDownload.as_view(), name='download'),