Refactor states/status (#4857)

* add file for states

* move general definition out

* add some tests and docs

* add tests for invalid definitions

* make status_label tag generic

* move templatetags

* remove unused tag

* rename test file

* make status label a lookup

* rename tags

* move import structure

* add missing tag

* collect states dynamically

* fix context function

* move api function out

* add tests for tags

* rename tests

* refactor imports

* Add test for API function

* improve errors and add tests for imporved errors

* make test calls simpler

* refactor definitions to use enums

* switch to enum

* refactor definitions to use enums

* fix lookup

* fix tag name

* make _TAG lookup a function

* cleanup BaseEnum

* make _TAG definition simpler

* restructure status codes to enum

* reduce LoC

* type status codes as int

* add specific function for template context

* Add definition for lookups

* fix filter lookup

* TEST: "fix" action lookup

* Add missing migrations

* Make all group code references explict

* change default on models to value

* switch to IntEnum

* move groups into a seperate class

* only request _TAG if it exsists

* use value and list

* use dedicated groups

* fix stock assigment

* fix order code

* more fixes

* fix borked change

* fix render lookup

* add group

* fix import

* fix syntax

* clenup

* fix migrations

* fix typo

* fix wrong value usage

* fix test

* remove group section

* remove group section

* add more test cases

* Add more docstring

* move choices out of migrations

* change import ordeR?

* last try before I revert

* Update part.migrations.0112

- Add custom migration class which handles errors

* Add unit test for migration

- Ensure that the new fields are added to the model

* Update reference to PR

---------

Co-authored-by: Oliver Walters <oliver.henry.walters@gmail.com>

InvenTree/order/test_api.py

@@ -17,7 +17,7 @@ from common.settings import currency_codes
 from company.models import Company
 from InvenTree.status_codes import (PurchaseOrderStatus, ReturnOrderLineStatus,
                                     ReturnOrderStatus, SalesOrderStatus,
-                                    StockStatus)
+                                    SalesOrderStatusGroups, StockStatus)
 from InvenTree.unit_test import InvenTreeAPITestCase
 from order import models
 from part.models import Part
@@ -562,7 +562,7 @@ class PurchaseOrderTest(OrderTest):
         # Test without completed orders
         response = self.get(url, expected_code=200, format=None)
 
-        number_orders = len(models.PurchaseOrder.objects.filter(target_date__isnull=False).filter(status__lt=PurchaseOrderStatus.COMPLETE))
+        number_orders = len(models.PurchaseOrder.objects.filter(target_date__isnull=False).filter(status__lt=PurchaseOrderStatus.COMPLETE.value))
 
         # Transform content to a Calendar object
         calendar = Calendar.from_ical(response.content)
@@ -743,7 +743,7 @@ class PurchaseOrderReceiveTest(OrderTest):
 
         # Mark the order as "placed" so we can receive line items
         order = models.PurchaseOrder.objects.get(pk=1)
-        order.status = PurchaseOrderStatus.PLACED
+        order.status = PurchaseOrderStatus.PLACED.value
         order.save()
 
     def test_empty(self):
@@ -944,7 +944,7 @@ class PurchaseOrderReceiveTest(OrderTest):
         # Before posting "valid" data, we will mark the purchase order as "pending"
         # In this case we do expect an error!
         order = models.PurchaseOrder.objects.get(pk=1)
-        order.status = PurchaseOrderStatus.PENDING
+        order.status = PurchaseOrderStatus.PENDING.value
         order.save()
 
         response = self.post(
@@ -956,7 +956,7 @@ class PurchaseOrderReceiveTest(OrderTest):
         self.assertIn('can only be received against', str(response.data))
 
         # Now, set the PurchaseOrder back to "PLACED" so the items can be received
-        order.status = PurchaseOrderStatus.PLACED
+        order.status = PurchaseOrderStatus.PLACED.value
         order.save()
 
         # Receive two separate line items against this order
@@ -1388,7 +1388,7 @@ class SalesOrderTest(OrderTest):
         # Test without completed orders
         response = self.get(url, expected_code=200, format=None)
 
-        number_orders = len(models.SalesOrder.objects.filter(target_date__isnull=False).filter(status__lt=SalesOrderStatus.SHIPPED))
+        number_orders = len(models.SalesOrder.objects.filter(target_date__isnull=False).filter(status__lt=SalesOrderStatus.SHIPPED.value))
 
         # Transform content to a Calendar object
         calendar = Calendar.from_ical(response.content)
@@ -1621,7 +1621,7 @@ class SalesOrderDownloadTest(OrderTest):
                 file,
                 required_cols=required_cols,
                 excluded_cols=excluded_cols,
-                required_rows=models.SalesOrder.objects.filter(status__in=SalesOrderStatus.OPEN).count(),
+                required_rows=models.SalesOrder.objects.filter(status__in=SalesOrderStatusGroups.OPEN).count(),
                 delimiter='\t',
             )