Barcode Refactor (#3640)

* define a simple model mixin class for barcode

* Adds generic function for assigning a barcode to a model instance

* StockItem model now implements the BarcodeMixin class

* Implement simple unit tests for new code

* Fix unit tests

* Data migration for uid field

* Remove references to old 'uid' field

* Migration for removing old uid field from StockItem model

* Bump API version

* Change lookup_barcode to be a classmethod

* Change barcode_model_type to be a class method

* Cleanup for generic barcode scan and assign API:

- Raise ValidationError as appropriate
- Improved unit testing
- Groundwork for future generic implementation

* Further unit tests for barcode scanning

* Adjust error messages for compatibility

* Unit test fix

* Fix hash_barcode function

- Add unit tests to ensure it produces the same results as before the refactor

* Add BarcodeMixin to Part model

* Remove old format_barcode function from Part model

* Further fixes for unit tests

* Add support for assigning arbitrary barcode to Part instance

- Simplify barcode API
- Add more unit tests

* More unit test fixes

* Update unit test

* Adds generic endpoint for unassigning barcode data

* Update web dialog for unlinking a barcode

* Template cleanup

* Add Barcode mixin to StockLocation class

* Add some simple unit tests for new model mixin

* Support assigning / unassigning barcodes for StockLocation

* remove failing outdated test

* Update template to integrate new barcode support for StockLocation

* Add BarcodeMixin to SupplierPart model

* Adds QR code view for SupplierPart

* Major simplification of barcode API endpoints

- Separate existing barcode plugin into two separate classes
- Simplify and consolidate the response from barcode scanning
- Update unit testing

* Yet more unit test fixes

* Yet yet more unit test fixes

InvenTree/build/models.py

@@ -22,7 +22,7 @@ from mptt.exceptions import InvalidMove
 from rest_framework import serializers
 
 from InvenTree.status_codes import BuildStatus, StockStatus, StockHistoryCode
-from InvenTree.helpers import increment, normalize, MakeBarcode, notify_responsible
+from InvenTree.helpers import increment, normalize, notify_responsible
 from InvenTree.models import InvenTreeAttachment, ReferenceIndexingMixin
 
 from build.validators import generate_next_build_reference, validate_build_order_reference
@@ -110,17 +110,6 @@ class Build(MPTTModel, ReferenceIndexingMixin):
         verbose_name = _("Build Order")
         verbose_name_plural = _("Build Orders")
 
-    def format_barcode(self, **kwargs):
-        """Return a JSON string to represent this build as a barcode."""
-        return MakeBarcode(
-            "buildorder",
-            self.pk,
-            {
-                "reference": self.title,
-                "url": self.get_absolute_url(),
-            }
-        )
-
     @staticmethod
     def filterByDate(queryset, min_date, max_date):
         """Filter by 'minimum and maximum date range'.