Add metadata model to Company (#3895)

* Add Metadata mixin to Company model

* Add migration file

* Lint

* Fixes due to style

* Syntax error

* Lint

* as this exposes a new endpoint to the API, increment the API version number with a brief description:

InvenTree/company/api.py

@@ -10,7 +10,9 @@ from rest_framework import filters
 from InvenTree.api import AttachmentMixin, ListCreateDestroyAPIView
 from InvenTree.filters import InvenTreeOrderingFilter
 from InvenTree.helpers import str2bool
-from InvenTree.mixins import ListCreateAPI, RetrieveUpdateDestroyAPI
+from InvenTree.mixins import (ListCreateAPI, RetrieveUpdateAPI,
+                              RetrieveUpdateDestroyAPI)
+from plugin.serializers import MetadataSerializer
 
 from .models import (Company, ManufacturerPart, ManufacturerPartAttachment,
                      ManufacturerPartParameter, SupplierPart,
@@ -83,6 +85,16 @@ class CompanyDetail(RetrieveUpdateDestroyAPI):
         return queryset
 
 
+class CompanyMetadata(RetrieveUpdateAPI):
+    """API endpoint for viewing / updating Company metadata."""
+
+    def get_serializer(self, *args, **kwargs):
+        """Return MetadataSerializer instance for a Company"""
+        return MetadataSerializer(Company, *args, **kwargs)
+
+    queryset = Company.objects.all()
+
+
 class ManufacturerPartFilter(rest_filters.FilterSet):
     """Custom API filters for the ManufacturerPart list endpoint."""
 
@@ -460,7 +472,11 @@ company_api_urls = [
         re_path(r'^.*$', SupplierPriceBreakList.as_view(), name='api-part-supplier-price-list'),
     ])),
 
-    re_path(r'^(?P<pk>\d+)/?', CompanyDetail.as_view(), name='api-company-detail'),
+    re_path(r'^(?P<pk>\d+)/?', include([
+        re_path(r'^metadata/', CompanyMetadata.as_view(), name='api-company-metadata'),
+        re_path(r'^.*$', CompanyDetail.as_view(), name='api-company-detail'),
+    ])),
 
     re_path(r'^.*$', CompanyList.as_view(), name='api-company-list'),
+
 ]

InvenTree/company/migrations/0049_company_metadata.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.16 on 2022-11-02 17:53
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('company', '0048_auto_20220913_0312'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='company',
+            name='metadata',
+            field=models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata'),
+        ),
+    ]

InvenTree/company/models.py

@@ -23,6 +23,7 @@ from common.settings import currency_code_default
 from InvenTree.fields import InvenTreeURLField, RoundingDecimalField
 from InvenTree.models import InvenTreeAttachment, InvenTreeBarcodeMixin
 from InvenTree.status_codes import PurchaseOrderStatus
+from plugin.models import MetadataMixin
 
 
 def rename_company_image(instance, filename):
@@ -50,7 +51,7 @@ def rename_company_image(instance, filename):
     return os.path.join(base, fn)
 
 
-class Company(models.Model):
+class Company(MetadataMixin, models.Model):
     """A Company object represents an external company.
 
     It may be a supplier or a customer or a manufacturer (or a combination)