Add metadata mixin to Part and PartCategory models

InvenTree/part/migrations/0076_auto_20220516_0819.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.2.13 on 2022-05-16 08:19
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0075_auto_20211128_0151'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='part',
+            name='metadata',
+            field=models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata'),
+        ),
+        migrations.AddField(
+            model_name='partcategory',
+            name='metadata',
+            field=models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata'),
+        ),
+    ]

InvenTree/part/models.py

@@ -46,29 +46,29 @@ from common.models import InvenTreeSetting
 
 from InvenTree import helpers
 from InvenTree import validators
-from InvenTree.models import InvenTreeTree, InvenTreeAttachment, DataImportMixin
-from InvenTree.fields import InvenTreeURLField
-from InvenTree.helpers import decimal2string, normalize, decimal2money
 
 import InvenTree.ready
 import InvenTree.tasks
 
+from InvenTree.fields import InvenTreeURLField
+from InvenTree.helpers import decimal2string, normalize, decimal2money
+from InvenTree.models import InvenTreeTree, InvenTreeAttachment, DataImportMixin
 from InvenTree.status_codes import BuildStatus, PurchaseOrderStatus, SalesOrderStatus
 
+import common.models
 from build import models as BuildModels
 from order import models as OrderModels
 from company.models import SupplierPart
+import part.settings as part_settings
 from stock import models as StockModels
 
-import common.models
-
-import part.settings as part_settings
+from plugin.models import MetadataMixin
 
 
 logger = logging.getLogger("inventree")
 
 
-class PartCategory(InvenTreeTree):
+class PartCategory(MetadataMixin, InvenTreeTree):
     """ PartCategory provides hierarchical organization of Part objects.
 
     Attributes:
@@ -327,7 +327,7 @@ class PartManager(TreeManager):
 
 
 @cleanup.ignore
-class Part(MPTTModel):
+class Part(MetadataMixin, MPTTModel):
     """ The Part object represents an abstract part, the 'concept' of an actual entity.
 
     An actual physical instance of a Part is a StockItem which is treated separately.