Validating API for SupplierPart, not able to spin-off ManufacturerPart from serialized data

InvenTree/company/models.py

@@ -11,7 +11,9 @@ import math
 
 from django.utils.translation import gettext_lazy as _
 from django.core.validators import MinValueValidator
+from django.core.exceptions import ValidationError
 from django.db import models
+from django.db.utils import IntegrityError
 from django.db.models import Sum, Q, UniqueConstraint
 
 from django.apps import apps
@@ -389,6 +391,58 @@ class SupplierPart(models.Model):
     def get_absolute_url(self):
         return reverse('supplier-part-detail', kwargs={'pk': self.id})
 
+    def save(self, *args, **kwargs):
+        """ Overriding save method to process the linked ManufacturerPart
+        """
+
+        if 'manufacturer' in kwargs:
+            manufacturer_id = kwargs.pop('manufacturer')
+
+            try:
+                manufacturer = Company.objects.get(pk=int(manufacturer_id))
+            except (ValueError, Company.DoesNotExist):
+                manufacturer = None
+        else:
+            manufacturer = None
+        if 'MPN' in kwargs:
+            MPN = kwargs.pop('MPN')
+        else:
+            MPN = None
+        
+        if manufacturer or MPN:
+            if not self.manufacturer_part:
+                # Create ManufacturerPart
+                manufacturer_part = ManufacturerPart.create(part=self.part,
+                                                            manufacturer=manufacturer,
+                                                            mpn=MPN,
+                                                            description=self.description,
+                                                            link=self.link)
+                self.manufacturer_part = manufacturer_part
+            else:
+                # Update ManufacturerPart (if ID exists)
+                try:
+                    manufacturer_part_id = self.manufacturer_part.id
+                except AttributeError:
+                    manufacturer_part_id = None
+                
+                if manufacturer_part_id:
+                    try:
+                        (manufacturer_part, created) = ManufacturerPart.objects.update_or_create(part=self.part,
+                                                                                                 manufacturer=manufacturer,
+                                                                                                 MPN=MPN)
+                    except IntegrityError:
+                        manufacturer_part = None
+                        raise ValidationError(f'ManufacturerPart linked to {self.part} from manufacturer {manufacturer.name}'
+                                              f'with part number {MPN} already exists!')
+
+                if manufacturer_part:
+                    self.manufacturer_part = manufacturer_part
+
+        self.clean()
+        self.validate_unique()
+
+        super().save(*args, **kwargs)
+
     class Meta:
         unique_together = ('part', 'supplier', 'SKU')
 
@@ -459,10 +513,11 @@ class SupplierPart(models.Model):
 
         items = []
 
-        if self.manufacturer_part.manufacturer:
-            items.append(self.manufacturer_part.manufacturer.name)
-        if self.manufacturer_part.MPN:
-            items.append(self.manufacturer_part.MPN)
+        if self.manufacturer_part:
+            if self.manufacturer_part.manufacturer:
+                items.append(self.manufacturer_part.manufacturer.name)
+            if self.manufacturer_part.MPN:
+                items.append(self.manufacturer_part.MPN)
 
         return ' | '.join(items)
 

InvenTree/company/serializers.py

@@ -158,7 +158,9 @@ class SupplierPartSerializer(InvenTreeModelSerializer):
 
     supplier = serializers.PrimaryKeyRelatedField(queryset=Company.objects.filter(is_supplier=True))
     
-    manufacturer = serializers.PrimaryKeyRelatedField(source='manufacturer_part.manufacturer', queryset=Company.objects.filter(is_manufacturer=True))
+    # manufacturer_part = ManufacturerPartSerializer(many=False, read_only=True)
+    
+    manufacturer = serializers.PrimaryKeyRelatedField(source='manufacturer_part.manufacturer', read_only=True)  # queryset=Company.objects.filter(is_manufacturer=True))
     
     MPN = serializers.StringRelatedField(source='manufacturer_part.MPN', read_only=True)
 
@@ -172,6 +174,7 @@ class SupplierPartSerializer(InvenTreeModelSerializer):
             'supplier',
             'supplier_detail',
             'SKU',
+            # 'manufacturer_part',
             'manufacturer',
             'MPN',
             'manufacturer_detail',
@@ -179,6 +182,37 @@ class SupplierPartSerializer(InvenTreeModelSerializer):
             'link',
         ]
 
+    def create(self, validated_data):
+        """ Extract manufacturer data and process ManufacturerPart """
+
+        print(validated_data)
+
+        # Create SupplierPart
+        supplier_part = super().create(validated_data)
+
+        # Get ManufacturerPart data
+        part = validated_data.get('part', None)
+        manufacturer = validated_data.get('manufacturer', None)
+        MPN = validated_data.get('MPN', None)
+        description = validated_data.get('description', None)
+        link = validated_data.get('link', None)
+
+        print(f'{manufacturer} | {MPN}')
+
+        if manufacturer or MPN:
+            # Create ManufacturerPart
+            manufacturer_part = ManufacturerPart.create(part=part,
+                                                        manufacturer=manufacturer,
+                                                        mpn=MPN,
+                                                        description=description,
+                                                        link=link)
+            print(manufacturer_part)
+            supplier_part.manufacturer_part = manufacturer_part
+            print(supplier_part.manufacturer_part)
+            supplier_part.save()
+
+        return supplier_part
+
 
 class SupplierPriceBreakSerializer(InvenTreeModelSerializer):
     """ Serializer for SupplierPriceBreak object """

InvenTree/company/views.py

@@ -528,24 +528,14 @@ class SupplierPartEdit(AjaxUpdateView):
     ajax_form_title = _('Edit Supplier Part')
 
     def save(self, supplier_part, form, **kwargs):
-        """ Save ManufacturerPart data """
+        """ Process ManufacturerPart data """
 
-        # Save supplier part object
-        supplier_part = super().save(supplier_part, form)
-
-        # Save manufacturer part object
-        manufacturer_id = form.cleaned_data.get('manufacturer', None)
-        try:
-            manufacturer = Company.objects.get(pk=manufacturer_id)
-        except Company.DoesNotExist:
-            pass
+        manufacturer = form.cleaned_data.get('manufacturer', None)
         MPN = form.cleaned_data.get('MPN', None)
-
-        manufacturer_part = supplier_part.manufacturer_part
-        manufacturer_part.manufacturer = manufacturer
-        manufacturer_part.MPN = MPN
-
-        manufacturer_part.save()
+        kwargs = {'manufacturer': manufacturer,
+                  'MPN': MPN,
+                  }
+        supplier_part.save(**kwargs)
 
     def get_form(self):
         form = super().get_form()
@@ -618,26 +608,16 @@ class SupplierPartCreate(AjaxCreateView):
         If single_pricing is defined, add a price break for quantity=1
         """
 
-        # Process manufacturer data
-        part = form.cleaned_data.get('part', None)
-        manufacturer_id = form.cleaned_data.get('manufacturer', None)
-        
-        manufacturer_part = None
-        if manufacturer_id:
-            manufacturer = Company.objects.get(pk=manufacturer_id)
-            MPN = form.cleaned_data.get('MPN', None)
-            description = form.cleaned_data.get('description', None)
-            link = form.cleaned_data.get('link', None)
-
-            manufacturer_part = ManufacturerPart.create(part=part, manufacturer=manufacturer, mpn=MPN, description=description, link=link)
-
         # Save the supplier part object
         supplier_part = super().save(form)
 
-        if manufacturer_part:
-            # Link ManufacturerPart
-            supplier_part.manufacturer_part = manufacturer_part
-            supplier_part.save()
+        # Process manufacturer data
+        manufacturer = form.cleaned_data.get('manufacturer', None)
+        MPN = form.cleaned_data.get('MPN', None)
+        kwargs = {'manufacturer': manufacturer,
+                  'MPN': MPN,
+                  }
+        supplier_part.save(**kwargs)
 
         single_pricing = form.cleaned_data.get('single_pricing', None)