Implement a generic API endpoint for enumeration of status codes (#4543)

* Implement a generic API endpoint for enumeration of status codes

* Adds endpoint for PurchaseOrderStatus

* Add more endpoints (sales order / return orer)

* Add endpoints for StockStatus and StockTrackingCode

* Support build status

* Use the attribute name as the dict key

* Refactored status codes in javascript

- Now accessible by "name" (instead of integer key)
- Will make javascript code much more readable

* Bump API version

InvenTree/order/api.py

@@ -20,12 +20,13 @@ from common.models import InvenTreeSetting
 from common.settings import settings
 from company.models import SupplierPart
 from InvenTree.api import (APIDownloadMixin, AttachmentMixin,
-                           ListCreateDestroyAPIView)
+                           ListCreateDestroyAPIView, StatusView)
 from InvenTree.filters import InvenTreeOrderingFilter
 from InvenTree.helpers import DownloadFile, str2bool
 from InvenTree.mixins import (CreateAPI, ListAPI, ListCreateAPI,
                               RetrieveUpdateAPI, RetrieveUpdateDestroyAPI)
-from InvenTree.status_codes import PurchaseOrderStatus, SalesOrderStatus
+from InvenTree.status_codes import (PurchaseOrderStatus, ReturnOrderLineStatus,
+                                    ReturnOrderStatus, SalesOrderStatus)
 from order.admin import (PurchaseOrderExtraLineResource,
                          PurchaseOrderLineItemResource, PurchaseOrderResource,
                          ReturnOrderResource, SalesOrderExtraLineResource,
@@ -1610,6 +1611,9 @@ order_api_urls = [
             re_path(r'.*$', PurchaseOrderDetail.as_view(), name='api-po-detail'),
         ])),
 
+        # Purchase order status code information
+        re_path(r'status/', StatusView.as_view(), {StatusView.MODEL_REF: PurchaseOrderStatus}, name='api-po-status-codes'),
+
         # Purchase order list
         re_path(r'^.*$', PurchaseOrderList.as_view(), name='api-po-list'),
     ])),
@@ -1661,6 +1665,9 @@ order_api_urls = [
             re_path(r'^.*$', SalesOrderDetail.as_view(), name='api-so-detail'),
         ])),
 
+        # Sales order status code information
+        re_path(r'status/', StatusView.as_view(), {StatusView.MODEL_REF: SalesOrderStatus}, name='api-so-status-codes'),
+
         # Sales order list view
         re_path(r'^.*$', SalesOrderList.as_view(), name='api-so-list'),
     ])),
@@ -1706,6 +1713,9 @@ order_api_urls = [
             re_path(r'.*$', ReturnOrderDetail.as_view(), name='api-return-order-detail'),
         ])),
 
+        # Return order status code information
+        re_path(r'status/', StatusView.as_view(), {StatusView.MODEL_REF: ReturnOrderStatus}, name='api-return-order-status-codes'),
+
         # Return Order list
         re_path(r'^.*$', ReturnOrderList.as_view(), name='api-return-order-list'),
     ])),
@@ -1713,6 +1723,10 @@ order_api_urls = [
     # API endpoints for reutrn order lines
     re_path(r'^ro-line/', include([
         path('<int:pk>/', ReturnOrderLineItemDetail.as_view(), name='api-return-order-line-detail'),
+
+        # Return order line item status code information
+        re_path(r'status/', StatusView.as_view(), {StatusView.MODEL_REF: ReturnOrderLineStatus}, name='api-return-order-line-status-codes'),
+
         path('', ReturnOrderLineItemList.as_view(), name='api-return-order-line-list'),
     ])),